Motor, air handling unit, method, device and non-volatile storage medium

Abstract

The invention provides a motor, an air handling unit, a method, a device and a nonvolatile storage medium. The motor comprises a motor shell, the motor shell defines a mounting cavity, and the mounting cavity is used for accommodating a stator and a rotor; the mounting cavity is communicated with a first air source; the driving part is movably arranged at the end of the mounting cavity, and air of the second air source is used for being introduced into the driving part; under the condition that the air temperature of the first air source is lower than the air temperature of the second air source, the driving part is in a first driving mode of enabling air in the mounting cavity to flow to the driving part; and under the condition that the air temperature of the first air source is higher than the air temperature of the second air source, the driving part is in a second driving mode of enabling the air at the driving part to flow into the mounting cavity. Through the technical scheme provided by the invention, the technical problem that the heat dissipation equipment for the magnetic suspension motor in the prior art is relatively large in size can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of motors, and in particular to a motor, an air handling unit, a method, a device and a non-volatile storage medium. Background Art

[0002] At present, the working principle of the magnetic levitation motor is to control the current temperature and current size of the electromagnetic coil to ensure the suspension of the rotor. Therefore, the heat dissipation control of the magnetic levitation motor is one of the keys to whether the magnetic levitation motor can work normally and stably.

[0003] However, the existing magnetic levitation motor heat dissipation method is mainly through a matching separate water cooling device. The structure of the dedicated water cooling circulation equipment equipped for the magnetic levitation motor is generally large, occupies more space, and has a high investment cost, which is not conducive to the miniaturization of the motor structure and also increases the operation and maintenance costs. Summary of the invention

[0004] The main purpose of the present invention is to provide a motor, an air handling unit, a method, a device and a non-volatile storage medium to solve the technical problem of the large size of the heat dissipation device for the magnetic levitation motor in the prior art.

[0005] In order to achieve the above object, according to one aspect of the present invention, a motor is provided, comprising:

[0006] A motor housing, the motor housing enclosing a mounting cavity, the mounting cavity being used to accommodate the stator and the rotor; the mounting cavity is connected to the first air source;

[0007] A driving member is movably disposed at the end of the mounting cavity, and air from the second air source is used to be passed to the driving member;

[0008] Among them, when the air temperature of the first air source is lower than the air temperature of the second air source, the driving member is in a first driving mode in which the air in the installation cavity flows to the driving member; when the air temperature of the first air source is higher than the air temperature of the second air source, the driving member is in a second driving mode in which the air at the driving member flows to the installation cavity.

[0009] Furthermore, the stator sleeve is arranged on the rotor; and the mounting cavity comprises:

[0010] A first air duct and a second air duct, the first air duct is located between the motor housing and the stator, and the second air duct is located between the stator and the rotor; the air in the first air duct and the air in the second air duct are both used to be passed to the driving member;

[0011] The motor further comprises a flow guide, which is arranged in the installation cavity and between the first air duct and the second air duct, and the flow guide is movably arranged.

[0012] Furthermore, the motor also includes:

[0013] A first temperature detection member is arranged on the motor housing, and the first temperature detection member is used to detect the temperature of the installation cavity; and / or,

[0014] a second temperature detecting member, disposed on a side of the driving member close to the second air source, the second temperature detecting member being used to detect the temperature of a side of the driving member close to the second air source; and / or,

[0015] The stator temperature detection component is arranged on the stator and is used to detect the temperature of the stator.

[0016] Furthermore, the motor also includes:

[0017] A wind flow trajectory monitoring component is arranged on the motor housing, and the wind flow trajectory monitoring component is used to monitor the trajectory of the wind flow in the installation cavity; and / or,

[0018] a current detection element connected to the output shaft of the motor, the current detection element being used to detect current information of the output shaft; and / or,

[0019] A displacement detection member, the detection head of which is arranged toward the output shaft of the motor, and the displacement detection member is used to detect the displacement of the output shaft.

[0020] According to another aspect of the present invention, there is provided an air handling unit, comprising:

[0021] The motor provided above;

[0022] The air supply part and the air return part, the air supply part forms a first air source; the air return part forms a second air source.

[0023] Further, the motor is arranged in the air supply unit; and / or,

[0024] The air handling unit also includes a connecting pipe, one end of which is used to be connected to a driving member of the motor, and the other end of which is communicated with the return air portion.

[0025] According to another aspect of the present invention, a motor control method is provided, which is applicable to the air handling unit provided above, and the motor control method includes:

[0026] Get the working mode of the air handling unit;

[0027] When the working mode is the cooling mode, the driving member of the motor is in a first driving mode so that the air in the installation cavity of the motor flows to the driving member; when the working mode is the heating mode, the driving member is in a second driving mode so that the air at the driving member flows into the installation cavity.

[0028] Furthermore, after obtaining the working mode of the air handling unit, the motor control method further includes:

[0029] An initial air flow rate for passing into the installation cavity is obtained according to the temperature of the installation cavity.

[0030] Further, obtaining an initial air flow rate for entering the installation cavity according to the temperature of the installation cavity includes:

[0031] The initial air flow rate S0 is calculated according to the formula S0=a*(T1-b); wherein T1 is the temperature of the installation cavity, a is the first coefficient, and b is the second coefficient.

[0032] Furthermore, the motor control method further includes:

[0033] Get the temperature of the stator of the motor;

[0034] The moving speed of the driving member is controlled according to the magnitude relationship between the temperature of the stator and the target temperature, so that the temperature of the stator is reduced to the target temperature.

[0035] Further, controlling the activity speed of the driving member according to the magnitude relationship between the temperature of the stator and the target temperature includes: controlling the activity speed of the driving member according to the air volume determination process, and the air volume determination process includes:

[0036] Obtaining the air flow rate in the installation cavity, the temperature of the installation cavity, and the temperature of the side of the driving component close to the return air portion of the air handling unit; obtaining a first heat exchange amount according to the air flow rate in the installation cavity, the temperature of the installation cavity, and the temperature of the side of the driving component close to the return air portion;

[0037] Obtaining a heat exchange area in a motor housing of the motor, a convection heat transfer coefficient of the motor, and a logarithmic mean enthalpy difference of the motor; obtaining a second heat exchange amount according to the heat exchange area in the motor housing, the convection heat transfer coefficient of the motor, and the logarithmic mean enthalpy difference of the motor;

[0038] The moving speed of the driving member is adjusted according to the magnitude relationship between the first heat exchange amount and the second heat exchange amount.

[0039] Further, obtaining a first heat exchange amount according to the air flow in the installation cavity, the temperature of the installation cavity, and the temperature of the side of the driving component close to the return air portion includes: calculating the first heat exchange amount Q1 according to the formula Q1=S*(T2-T1); wherein S is the air flow in the installation cavity, T2 is the temperature of the side of the driving component close to the return air portion, and T1 is the temperature of the installation cavity; and / or,

[0040] Obtaining a second heat exchange amount according to a heat exchange area in a motor housing, a convection heat transfer coefficient of the motor, and a logarithmic mean enthalpy difference of the motor, comprising: calculating a third heat exchange amount Q2 according to a formula Q2=η*A*△h, and calculating a second heat exchange amount Q3 according to a formula Q3=K*Q2; wherein η is the convection heat transfer coefficient of the motor, A is the heat exchange area in the motor housing, △h is the logarithmic mean enthalpy difference of the motor, and K is a correction coefficient; and / or,

[0041] The moving speed of the driving component is adjusted according to the relationship between the first heat exchange amount and the second heat exchange amount, including: when |(Q3-Q1) / Q3|<0.05, the moving speed of the driving component is kept unchanged; when |(Q3-Q1) / Q3|≥0.05, the moving speed of the driving component is adjusted and the air volume judgment process is re-entered; wherein Q1 is the first heat exchange amount and Q3 is the second heat exchange amount.

[0042] Further, controlling the activity speed of the driving member according to the magnitude relationship between the temperature of the stator and the target temperature also includes: controlling the activity speed of the driving member according to a temperature judgment process, the temperature judgment process including:

[0043] When the working mode is the cooling mode, the temperature Tr of the stator is compared with the target temperature Trm;

[0044] When Tr≥Trm, the air volume determination process is entered; when Tr<Trm, the driving element is controlled to be in the second driving mode and maintained for the first preset time; after the driving element is controlled to be in the second driving mode and maintained for the first preset time, the temperature determination process is re-entered;

[0045] When the working mode is the heating mode, the temperature Tk at the inner surface of the motor housing is compared with the temperature Tr of the stator;

[0046] When Tk≤Tr, enter the air volume judgment process; when Tk>Tr, increase the activity speed of the driving component to the overheat protection speed and maintain it for the second preset time; after increasing the activity speed of the driving component to the overheat protection speed and maintaining it for the second preset time, re-enter the temperature judgment process.

[0047] Furthermore, the installation cavity includes a first air duct and a second air duct, the first air duct is located between the motor housing and the stator, and the second air duct is located between the stator and the rotor of the motor; the air in the first air duct and the air in the second air duct are both used to be passed to the driving member;

[0048] Before controlling the driving member to be in the second driving mode and maintaining the first preset time, the temperature judgment process further includes: making the air volume in the second air duct greater than the air volume in the first air duct; and / or,

[0049] Before increasing the activity speed of the driving member to the overheat protection speed and maintaining it for a second preset time period, the temperature judgment process further includes: making the air volume in the second air duct greater than the air volume in the first air duct.

[0050] Furthermore, making the air volume in the second air duct greater than the air volume in the first air duct means making the ratio of the air volume in the first air duct to the air volume in the second air duct greater than or equal to 0.1 and less than or equal to 0.5.

[0051] Further, after placing the driving member of the motor in a first driving mode in which the air in the installation cavity of the motor flows to the driving member or placing the driving member in a second driving mode in which the air at the driving member flows to the installation cavity, the control method of the motor further includes: calibrating the displacement of the output shaft of the motor according to a displacement calibration process, the displacement calibration process including:

[0052] Obtaining displacement information and current information of the output shaft of the motor, and obtaining positioning operation information of the output shaft according to the displacement information and current information;

[0053] Obtaining wind flow trajectory image information in the installation cavity;

[0054] Determine reference position information of the output axis in the positioning operation information and the wind flow trajectory image information according to a comparison result between the output axis position of the positioning operation information and the output axis position of the wind flow trajectory image information;

[0055] The displacement of the output shaft is calibrated according to the reference position information so that the deviation of the output shaft position is within a preset error range.

[0056] Further, according to the comparison result between the output shaft position of the positioning operation information and the output shaft position of the wind flow trajectory image information, the output shaft reference position information is determined in the positioning operation information and the wind flow trajectory image information, including: judging whether the output shaft position data corresponding to the wind flow trajectory image information at a preset time is consistent with the output shaft position data corresponding to the positioning operation information at a preset time;

[0057] When the output shaft position data corresponding to the wind flow trajectory image information at the preset time is consistent with the output shaft position data corresponding to the positioning operation information at the preset time, determining one of the positioning operation information and the wind flow trajectory image information as the reference position information;

[0058] When the output axis position data corresponding to the wind flow trajectory image information at the preset time and the output axis position data corresponding to the positioning operation information at the preset time are inconsistent, the output axis position data of the wind flow trajectory image information within the preset detection time and the output axis position data of the positioning operation information within the preset detection time are obtained, and the reference position information is determined according to the comparison result of the output axis position data of the wind flow trajectory image information within the preset detection time and the output axis position data of the positioning operation information within the preset detection time.

[0059] Further, the reference position information is determined according to the comparison result of the output shaft position data of the wind flow trajectory image information within the preset detection time length and the output shaft position data of the positioning operation information within the preset detection time length, including:

[0060] Obtaining an imaging trend based on the output shaft position data of the wind flow trajectory image information within a preset detection time, and determining the output shaft simulation position data based on the imaging trend;

[0061] According to the output shaft position data of the positioning operation information within the preset detection time length, the output shaft position data at the last moment of the preset detection time length is obtained to obtain the output shaft operation position data;

[0062] Determine whether the output shaft simulation position data and the output shaft calculation position data are consistent;

[0063] When the output shaft simulation position data and the output shaft calculation position data are consistent, the wind flow trajectory image information is determined as the reference position information; when the output shaft simulation position data and the output shaft calculation position data are inconsistent, the positioning calculation information is determined as the reference position information.

[0064] Furthermore, after determining that the positioning operation information is the reference position information, the displacement calibration process further includes:

[0065] Obtain output shaft position data corresponding to the wind flow trajectory image information at a preset detection time;

[0066] Determine whether the output shaft position data corresponding to the wind flow trajectory image information at the preset detection time is consistent with the output shaft calculation position data;

[0067] When the output shaft position data and the output shaft calculation position data corresponding to the wind flow trajectory image information at the preset detection time are inconsistent, the wind flow trajectory image information is re-determined as the reference position information; when the output shaft position data and the output shaft calculation position data corresponding to the wind flow trajectory image information at the preset detection time are consistent, the displacement correction process is re-entered.

[0068] According to another aspect of the present invention, a motor control device is provided, which is used to execute the motor control method provided above, and the motor control device includes:

[0069] An acquisition unit, used for acquiring the working mode of the air handling unit;

[0070] The control unit is used to put the driving member of the motor in a first driving mode so that the air in the installation cavity of the motor flows to the driving member when the working mode is a cooling mode; and put the driving member in a second driving mode so that the air at the driving member flows into the installation cavity when the working mode is a heating mode.

[0071] According to yet another aspect of the present invention, a nonvolatile storage medium is provided, the nonvolatile storage medium including a stored program, wherein when the program is executed, the device where the nonvolatile storage medium is located is controlled to execute the motor control method provided above.

[0072] By applying the technical solution of the present invention, the heat dissipation of the motor can be achieved only by setting the driving member in conjunction with the first air source and the second air source, without the need for additional cooling equipment. Compared with the prior art that additionally equips a large-volume water-cooling circulation device, the layout of the motor mechanical structure is optimized, the motor structure is miniaturized and lightweight, the installation space is saved, and the overall assembly efficiency of the equipment is improved. And by automatically switching the driving mode of the air flow direction inside the motor housing according to the temperature difference between the first air source and the second air source, the motor can maintain a good cooling effect under different air environments. When the first air source is a low-temperature air environment, the air naturally flows into the motor housing, and is cooled by the low-temperature air. After cooling, the air with a higher temperature is discharged from the installation cavity, thereby better ensuring heat dissipation; when the first air source is a high-temperature air environment, the driving member is used to send the relatively low-temperature air outside into the motor for cooling, so as to avoid overheating of the motor, and the air with a higher temperature is discharged from the installation cavity after cooling. In practical applications, the temperature adaptive regulation capability of this motor can significantly reduce motor damage and efficiency loss caused by temperature fluctuations, and extend the service life of the motor, especially in seasons and environments with frequent temperature changes, such as air conditioning systems in summer and heating equipment in winter. This design can effectively improve the stability of the equipment and user experience. Therefore, the technical solution of the present invention can solve the technical problem of large volume of heat dissipation equipment for magnetic levitation motors in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0074] Figure 1 It shows a schematic structural diagram of a motor provided according to the first embodiment of the present invention;

[0075] Figure 2A schematic diagram showing the wind flow of the motor provided by the first embodiment of the present invention in the first driving mode is shown;

[0076] Figure 3 A schematic diagram showing the wind flow of the motor in the second driving mode provided by the first embodiment of the present invention is shown;

[0077] Figure 4 It shows a schematic structural diagram of an air handling unit provided according to the second embodiment of the present invention;

[0078] Figure 5 A schematic diagram showing the steps of a method for controlling a motor provided in accordance with a third embodiment of the present invention is shown;

[0079] Figure 6 A partial logic schematic diagram of a method for controlling a motor provided according to a third embodiment of the present invention is shown;

[0080] Figure 7 A logic schematic diagram of another part of the motor control method provided according to the third embodiment of the present invention is shown.

[0081] The above drawings include the following reference numerals:

[0082] 10. Motor housing; 11. First air duct; 12. Second air duct;

[0083] 20. Mounting parts;

[0084] 30. Driving parts;

[0085] 1. Stator;

[0086] 2. Rotor;

[0087] 3. Output shaft;

[0088] 4. Winding coil;

[0089] 100, air supply section; 101, air intake section; 102, air supply medium efficiency filtration section; 103, air supply maintenance section; 104, cold coil section;

[0090] 200, return air section; 201, air outlet section; 202, return air inspection section; 203, return air medium efficiency filtration section;

[0091] 300, connecting pipe;

[0092] 400. Motor. DETAILED DESCRIPTION

[0093] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0094] like Figures 1 to 3 As shown, a first embodiment of the present invention provides a motor 400, the motor 400 includes a motor housing 10 and a driving member 30, the motor housing 10 encloses a mounting cavity, the mounting cavity is used to accommodate a stator 1 and a rotor 2, and the mounting cavity is connected to a first air source. The driving member 30 is movably arranged at the end of the mounting cavity, and the air of the second air source is used to pass into the driving member 30. Wherein, when the air temperature of the first air source is lower than the air temperature of the second air source, the driving member 30 is in a first driving mode that causes the air in the mounting cavity to flow to the driving member 30; when the air temperature of the first air source is higher than the air temperature of the second air source, the driving member 30 is in a second driving mode that causes the air at the driving member 30 to flow into the mounting cavity.

[0095] The motor 400 provided by the first embodiment of the present invention can achieve heat dissipation of the motor 400 only by setting the driving member 30 in conjunction with the first air source and the second air source, without the need for additional cooling equipment. Compared with the prior art that additionally equips a large-volume water-cooling circulation device, the mechanical structure layout of the motor 400 is optimized, the motor 400 structure is miniaturized and lightweight, the installation space is saved, and the overall assembly efficiency of the device is improved. And by automatically switching the driving mode of the air flow direction inside the motor housing 10 according to the temperature difference between the first air source and the second air source, the motor 400 can maintain a good cooling effect under different air environments. When the first air source is a low-temperature air environment, the air naturally flows into the motor housing 10, and is cooled by the low-temperature air. After cooling, the air with a higher temperature is discharged from the installation cavity, thereby better ensuring heat dissipation; when the first air source is a high-temperature air environment, the driving member 30 is used to send the relatively low-temperature air outside into the motor 400 for cooling, so as to avoid overheating of the motor 400, and the air with a higher temperature is discharged from the installation cavity after cooling. In practical applications, the temperature adaptive adjustment capability of the motor 400 can significantly reduce the damage and efficiency loss of the motor 400 caused by temperature fluctuations, and extend the service life of the motor 400, especially in seasons and environments with frequent temperature changes, such as air conditioning systems in summer and heating equipment in winter. This design can effectively improve the stability of the equipment and user experience. Therefore, the motor provided in this embodiment can solve the technical problem of the large size of the heat dissipation equipment for the magnetic levitation motor in the prior art.

[0096] Specifically, the motor 400 is a magnetic levitation motor.

[0097] Specifically, a vent for air circulation is provided on the motor housing 10. Thus, the design of the vent allows cooling air to directly enter the interior of the motor 400, thereby improving the efficiency of heat exchange.

[0098] Specifically, the driving member 30 is movably disposed in the installation cavity, and the stator 1 and the rotor 2 are both spaced apart from the driving member 30, or the driving member 30 is movably disposed outside the installation cavity. In this way, whether the driving member 30 is installed internally or externally, the optimal configuration of air flow can be ensured. This design flexibility improves cooling efficiency while reducing interference with the internal structure of the motor 400.

[0099] Specifically, the motor 400 also includes a mounting member 20, which is arranged on the motor housing 10, and the mounting member 20 has a heat dissipation cavity, which is connected to the mounting cavity, and the heat dissipation cavity is used to communicate with the second air source; the driving member 30 is arranged in the heat dissipation cavity, and the driving member 30 can be movably arranged to drive the air in the mounting cavity to flow and adjust the air flow direction in the mounting cavity. With such a structural arrangement, by introducing the mounting member 20 and its heat dissipation cavity, not only the heat dissipation area of ​​the motor 400 is increased, but also more precise control is provided for the introduction and discharge of cooling air. The movable arrangement of the driving member 30 in the heat dissipation cavity can effectively guide and control the flow direction of the cooling air, thereby more accurately adjusting the temperature in the motor 400, avoiding local overheating or overcooling, and improving the overall thermal management performance of the system.

[0100] Specifically, the driving member 30 is an axial flow fan blade. In this way, the axial flow fan blade as the driving member 30 can efficiently promote the flow of air, ensure that the air flows out of or flows into the installation cavity along the axial direction of the driving member 30, and its design enables large air volume and low pressure, which is very suitable for cooling systems that require a large amount of air flow. The use of axial flow fan blades also ensures the uniform distribution of cooling air, improves the cooling effect of the motor 400, and reduces energy consumption, thereby improving the energy efficiency ratio of the overall system.

[0101] In this embodiment, the stator 1 is sleeved on the rotor 2; the installation cavity includes a first air duct 11 and a second air duct 12, the first air duct 11 is located between the motor housing 10 and the stator 1, and the second air duct 12 is located between the stator 1 and the rotor 2; the air in the first air duct 11 and the air in the second air duct 12 are both used to pass into the driving member 30. Among them, the motor 400 also includes a guide member, which is arranged in the installation cavity and between the first air duct 11 and the second air duct 12, and the guide member can be movably arranged. With such a structural arrangement, the distribution of wind flow can be more accurately controlled through the movement of the guide member, and the cooling and preheating effect of the motor 400 can be further optimized, which is suitable for precision equipment with higher requirements for the temperature control of the motor 400, such as high-precision CNC machine tools, high-end household appliances, etc. The setting of the guide member can adjust the distribution of cold and hot air according to actual needs, ensuring that the motor 400 runs at the optimal temperature, thereby reducing equipment failures and maintenance costs caused by overheating or overcooling of the motor 400. The provision of the first air duct 11 and the second air duct 12 can also increase the heat dissipation area in the motor 400 and better improve the heat dissipation effect.

[0102] Specifically, the guide member is a guide plate.

[0103] Specifically, the motor 400 also includes a first temperature detection member, which is arranged on the motor housing 10, and the first temperature detection member is used to detect the temperature of the installation cavity. With such a structural arrangement, the motor 400 can monitor the temperature in the installation cavity in real time, which is particularly important for the magnetic levitation motor. Accurate temperature monitoring helps to adjust the cooling strategy in time, prevent the motor 400 from overheating, and protect the stability and reliability of the magnetic levitation system. At the same time, temperature data can be used to optimize the cooling efficiency of the motor 400, ensure that the motor 400 runs at the optimal operating temperature, extend the service life of the motor 400, and reduce energy consumption.

[0104] Specifically, the motor 400 also includes a second temperature detection member, which is arranged on the side of the driving member 30 close to the second air source, and the second temperature detection member is used to detect the temperature of the side of the driving member 30 close to the second air source. Such a structural arrangement helps to accurately control the cooling air volume and direction, ensure that the motor 400 operates at a suitable temperature, and avoid performance degradation or damage caused by excessively high or low temperatures. In addition, by monitoring the temperature here, the system can intelligently determine whether it is necessary to switch the drive mode to adapt to changes in ambient temperature, thereby improving the flexibility and response speed of the system.

[0105] Specifically, the motor 400 also includes a stator temperature detection element, which is arranged on the stator 1 and is used to detect the temperature of the stator 1. With such a structural setting, by obtaining the temperature data of the stator 1 in real time, the system can quickly adjust the current of the winding coil 4, optimize the magnetic suspension control, avoid the degradation or damage of the magnetic material performance due to overheating, and ensure the smoothness and safety of the operation of the motor 400. In addition, the stator temperature data can also be used to analyze the thermal characteristics of the motor 400, improve the optimization of the design and cooling strategy of the motor 400, further reduce energy consumption, and improve the energy efficiency of the overall system.

[0106] Specifically, the stator temperature detection element is an NTC (negative temperature coefficient) sensor, which is embedded in the copper wire winding coil 4 in the stator 1 of the motor 400. Specifically, an indefinite number of NTC sensors are arranged around the surface and inside of the coil.

[0107] Specifically, the motor 400 also includes a wind flow trajectory monitoring component, which is arranged on the motor housing 10, and the wind flow trajectory monitoring component is used to monitor the trajectory of the wind flow in the installation cavity. With such a structural setting, the dynamic distribution of the wind flow inside the motor 400 can be monitored in real time. By monitoring the wind flow trajectory, it can ensure that the cooling wind evenly and effectively covers the key parts of the motor 400, optimize the heat exchange process, and prevent local overheating or insufficient cooling. In addition, the wind flow trajectory data can be used for the calibration of the magnetic levitation positioning system, helping the system to detect and adjust positioning deviations in a timely manner, improve positioning accuracy and the stability of the operation of the motor 400. The data collected over a long period of time also helps to continuously optimize the design and cooling strategy of the motor 400, and improve the performance and energy efficiency of the overall system.

[0108] Specifically, the wind flow trajectory monitoring device is a Laser Doppler Anemometer (LDA).

[0109] Specifically, the motor 400 also includes a current detection component, which is connected to the output shaft 3 of the motor 400, and the current detection component is used to detect the current information of the output shaft 3. With such a structural setting, the current detection component can monitor the real-time current state of the output shaft 3, which is crucial for the electromagnetic force control and fault detection of the magnetic levitation motor. The current information directly reflects the operating state of the motor 400 and the change of the electromagnetic force. By analyzing the current of the output shaft 3, the current parameters of the winding coil 4 can be optimized, the stable suspension of the rotor can be maintained, and the efficiency of the motor 400 can be improved. At the same time, current detection is also a key link in fault diagnosis, which can help the system quickly identify abnormal current patterns, take timely measures to avoid possible equipment damage, and ensure the reliability and safety of the motor 400.

[0110] Specifically, the motor 400 also includes a displacement detection member, the detection head of which is arranged toward the output shaft 3 of the motor 400, and the displacement detection member is used to detect the displacement of the output shaft 3. With such a structural arrangement, displacement data is the basis for maintaining the stable suspension of the rotor 2. Through the displacement detection member, the current size and direction can be adjusted in time to ensure that the rotor 2 runs in an ideal position and avoid mechanical contact and energy loss caused by positioning deviation. In addition, displacement detection is also an important means of fault prevention and maintenance, which can help the system identify potential positioning problems, take preventive measures, extend the service life of the motor 400, and reduce maintenance costs.

[0111] Specifically, the current detection element is a current sensor, and the displacement detection element is a displacement sensor.

[0112] like Figure 1As shown, the motor 400 further includes a winding coil 4, which is one of the core components of the magnetic levitation motor, and its design and performance directly affect the efficiency, stability and reliability of the motor 400. In the magnetic levitation motor, the winding coil 4 is mainly used to generate electromagnetic force to achieve the suspension and drive of the rotor 2.

[0113] like Figure 4 As shown, the second embodiment of the present invention provides an air handling unit, which includes the motor 400, the air supply unit 100 and the return air unit 200 provided in the first embodiment, the air supply unit 100 forms a first air source; the return air unit 200 forms a second air source.

[0114] The air handling unit provided by the second embodiment of the present invention can achieve heat dissipation of the motor 400 only by setting the driving member 30 in coordination with the air supply unit 100 and the return air unit 200, without the need for additional cooling equipment. The clean, low-humidity and low-temperature cold air processed by the air handling unit is directly used as the cooling medium of the motor 400, which saves the need for separately configured cooling equipment, can miniaturize the structure of the magnetic suspension motor, and can be assembled in the combined cabinet structure. It can also extend the service life cycle of the motor 400 and reduce the initial investment cost and operation and maintenance costs. In addition, by automatically switching the driving mode of the air flow direction inside the motor housing 10 according to the temperature difference between the air supply unit 100 and the return air unit 200, the motor 400 can maintain a good cooling effect in different air environments. When the air supply section 100 is in a low-temperature air environment, air naturally flows into the motor housing 10, and is cooled by the low-temperature air. After cooling, the air with a higher temperature is discharged from the installation cavity, thereby better ensuring heat dissipation; when the air supply section 100 is in a high-temperature air environment, the relatively low-temperature air in the return air section 200 is sent into the motor 400 for cooling by the driving member 30 to avoid overheating of the motor 400, and the air with a higher temperature is discharged from the installation cavity after cooling. In practical applications, the temperature adaptive adjustment capability of the motor 400 can significantly reduce the damage and efficiency loss of the motor 400 caused by temperature fluctuations, and extend the service life of the motor 400, especially in seasons and environments with frequent temperature changes, such as air conditioning systems in summer and heating equipment in winter. This design can effectively improve the stability of the equipment and user experience. Therefore, the air handling unit provided by this embodiment can solve the technical problem of the large volume of the heat dissipation equipment for magnetic levitation motors in the prior art.

[0115] Specifically, the motor 400 is arranged in the air supply unit 100. In this way, the motor 400 is directly arranged in the air supply unit 100, and the clean, low-humidity and low-temperature air processed by the air supply unit 100 is used as the cooling source of the motor 400, which not only saves the configuration of additional cooling equipment and simplifies the system structure, but also realizes the ready-to-use cooling air, thereby improving the cooling efficiency. This design enables the motor 400 to be more tightly integrated into the air handling unit, reducing the footprint of the overall equipment. At the same time, due to the direct introduction of cooling air, the internal temperature of the motor 400 can be more accurately controlled to avoid overcooling or overheating, ensuring the stability and safety of the operation of the motor 400, while also extending the service life of the motor 400 and reducing the operation and maintenance costs.

[0116] Specifically, the motor 400 is arranged at the air supply port of the air supply unit 100. In this way, by arranging the motor 400 at the air supply port of the air supply unit 100, the clean, low-humidity and low-temperature air processed by the air supply unit 100 can be directly used as the cooling medium of the motor 400. The selection of this position enables the motor 400 to immediately contact the cooling air during startup and operation, and quickly achieve stable control of the internal temperature of the motor 400. In addition, since the air supply unit 100 usually already has air processing functions such as filtering and cooling, there is no need to separately configure a cooling device for the motor 400, which significantly reduces the initial investment cost and operation and maintenance cost of the system. At the same time, this design also simplifies the connection between the motor 400 and the air handling unit, improves the overall integration and compactness of the system, and is conducive to the miniaturization and efficiency of the air-conditioning unit.

[0117] Specifically, the air handling unit also includes a connecting pipe 300, one end of which is used to connect to the driving member 30 of the motor 400, and the other end of the connecting pipe 300 is connected to the return air unit 200. With such a structural arrangement, the air in the motor 400 is effectively connected to the return air unit 200 by setting the connecting pipe 300, thereby ensuring the recycling of cooling air and reducing energy waste. The cooled air is discharged to the return air unit 200 through the connecting pipe 300 or sent from the return air unit 200 to the motor 400 through the axial flow fan, and then discharged from the surface of the motor 400, thereby avoiding the mixing of cooling air and fresh air supply, ensuring the freshness of the air supply and the normal operation of the air conditioning system. At the same time, the design of the connecting pipe 300 also makes the cooling process of the motor 400 more controllable, and can adjust the cooling air volume and flow direction according to the actual cooling needs of the motor 400, further optimizing the cooling effect. This design also simplifies the internal structure of the air handling unit, improves the assembly efficiency of the equipment, and reduces manufacturing costs. It also facilitates maintenance and troubleshooting because the flow path of the cooling air is clearer, making it easier to monitor and adjust.

[0118] Specifically, the other end of the connecting pipe 300 is connected to the return air port of the return air unit 200. In this way, the design of the connecting pipe 300 ensures that the inside of the motor 400, the return air unit 200 and the air supply unit 100 form a complete air circulation path. It not only avoids the mixing of cooling air and fresh supply air, maintains the purity and temperature stability of the supply air, but also maximizes the utilization of air resources and improves the energy efficiency of the system. In addition, the design of the connecting pipe 300 can also effectively isolate the noise generated by the operation of the motor 400, reduce the impact on the indoor environment, and improve the comfort and user experience of the air-conditioning system. This connection design also simplifies the structure of the cooling system, reduces the potential risk of leakage, and improves the reliability of the system. At the same time, it is convenient for system maintenance and troubleshooting, because the flow path of the cooling air is clear and the monitoring points are concentrated, so problems can be located and solved more quickly and accurately.

[0119] like Figure 2 , Figure 3 and Figure 4 As shown, the arrows in the figure indicate the direction of air flow. Figure 2 The airflow of the motor 400 in the first driving mode, that is, when the air handling unit is in the cooling mode, is shown in detail. At this time, the motor 400 is cooled by the cold air of the air supply unit 100 to reduce the temperature of the motor 400. In the first driving mode, the active position or state of the driving member 30 is adjusted so that the airflow in the installation cavity can flow to the driving member 30, and then flow out to the return air unit 200, effectively taking away the heat inside the motor 400. There is a first air duct 11 between the motor housing 10 and the stator 1, and there is a second air duct 12 between the stator 1 and the rotor 2. The design of these two air ducts ensures that the airflow can pass through the inside of the motor 400 evenly, thereby improving the heat exchange efficiency. In addition, the guide member is arranged in the installation cavity and is located between the first air duct 11 and the second air duct 12, and the guide member can be movable, which enables it to dynamically adjust the path of the airflow and optimize the cooling effect of the motor 400 in different working modes. Figure 3 The figure shows the direction and situation of the airflow of the motor 400 in the second driving mode, that is, when the air handling unit is in the heating mode. In the second driving mode, the movement of the driving member 30 is adjusted so that the air at the driving member 30 flows into the installation cavity, which means that the motor 400 uses the return air of the return air part 200 to dissipate the heat of the motor 400, avoiding overheating of the motor 400, thereby ensuring the operation stability of the motor 400.

[0120] In the second embodiment, the air handling unit further includes an air intake section 101, an air supply medium efficiency filter section 102, an air supply inspection section 103 and a cold coil section 104. The combination of these components can provide clean, filtered air for cooling the motor 400. The air handling unit further includes an air outlet section 201, a return air inspection section 202 and a return air medium efficiency filter section 203 to better process the return air.

[0121] like Figures 5 to 7 As shown, embodiment three of the present invention provides a method for controlling a motor, which is applicable to the air handling unit provided in embodiment two, and the method for controlling the motor includes: obtaining the working mode of the air handling unit; when the working mode is a cooling mode, placing the driving member 30 of the motor 400 in a first driving mode in which the air in the installation cavity of the motor 400 flows to the driving member 30; when the working mode is a heating mode, placing the driving member 30 in a second driving mode in which the air at the driving member 30 flows to the installation cavity.

[0122] The motor control method provided by the third embodiment of the present invention can achieve heat dissipation of the motor 400 only by setting the driving member 30 in coordination with the air supply unit 100 and the return air unit 200, without the need for additional cooling equipment. The clean, low-humidity and low-temperature cold air processed by the air handling unit is directly used as the cooling medium of the motor 400, which saves the need for separately configured cooling equipment, can miniaturize the structure of the magnetic suspension motor, and can be assembled in the combined cabinet structure. It can also extend the service life cycle of the motor 400 and reduce the initial investment cost and operation and maintenance cost. In addition, by automatically switching the driving mode of the air flow direction inside the motor housing 10 according to the temperature difference between the air supply unit 100 and the return air unit 200, the motor 400 can maintain a good cooling effect in different air environments. When the working mode is the cooling mode, the air supply unit 100 contains low-temperature air, and the air naturally flows into the motor housing 10, and is cooled by the low-temperature air. After cooling, the air with increased temperature is discharged from the installation cavity, so as to better ensure heat dissipation; when the working mode is the heating mode, the air supply unit 100 contains high-temperature air, and the driving member 30 is used to send the relatively low-temperature air in the return air unit 200 into the motor 400 for cooling, so as to avoid overheating of the motor 400, and after cooling, the air with increased temperature is discharged from the installation cavity. In practical applications, the temperature adaptive adjustment capability of the motor 400 can significantly reduce the damage and efficiency loss of the motor 400 caused by temperature fluctuations, and extend the service life of the motor 400, especially in seasons and environments with frequent temperature changes, such as air conditioning systems in summer and heating equipment in winter. This design can effectively improve the stability of the equipment and user experience. Therefore, the control method of the motor provided in this embodiment can solve the technical problem of the large volume of the heat dissipation equipment for the magnetic levitation motor in the prior art.

[0123] Specifically, after obtaining the working mode of the air handling unit, the control method of the motor further includes: obtaining the initial air flow rate for entering the installation cavity according to the temperature of the installation cavity. With such a setting, by adjusting the initial air flow rate, the ideal temperature state can be quickly reached at the initial start-up of the motor 400, reducing the efficiency loss of the motor 400 caused by temperature fluctuations, and is suitable for equipment that requires fast response and stable operation, and improves the response speed of the system. Especially in the scenario where the indoor temperature needs to be adjusted quickly, this control method can significantly improve the comfort and energy efficiency of the system and reduce the operating cost.

[0124] Specifically, the temperature of the installation cavity refers to the maximum temperature in the installation cavity.

[0125] Specifically, the method for obtaining the initial air flow rate for passing into the installation cavity according to the temperature of the installation cavity includes: calculating the initial air flow rate S0 according to the formula S0=a*(T1-b); wherein T1 is the temperature of the installation cavity, a is the first coefficient, and b is the second coefficient. With such a setting, the initial air flow rate can be dynamically adjusted according to the actual temperature state of the motor 400, ensuring that the motor 400 can operate efficiently and stably under various temperature conditions. By calculating the initial air flow rate through the above formula, it can be accurately adjusted according to the actual temperature state of the motor 400, ensuring the optimal operating state of the motor 400 under different temperature environments, reducing the increase in energy consumption and system failures caused by abnormal temperature, and improving the stability and energy efficiency of the overall system, especially in seasons and regions with large temperature changes. This adjustment capability can significantly improve the operating efficiency of the equipment and user experience.

[0126] Specifically, 5≤a≤6, 8≤b≤9.

[0127] In the third embodiment, the control method of the motor also includes: obtaining the temperature of the stator 1 of the motor 400; controlling the moving speed of the driving member 30 according to the relationship between the temperature of the stator 1 and the target temperature, so that the temperature of the stator 1 drops to the target temperature. With such a setting, by accurately controlling the moving speed of the driving member 30, the temperature of the stator 1 can be accurately adjusted, the damage of the motor 400 caused by overheating or overcooling can be avoided, and the service life and operating efficiency of the motor 400 can be improved. By accurately controlling the moving speed of the driving member 30, the temperature of the stator 1 can be accurately adjusted, the equipment failure and precision reduction caused by overheating of the motor 400 can be avoided, and the processing accuracy and stability of the machine tool can be improved. Especially in the scenarios of high-precision processing and long-term continuous operation, this precise temperature control capability can significantly improve the production efficiency and service life of the equipment.

[0128] Specifically, the temperature of the stator 1 refers to the maximum temperature of the surface of the stator 1 .

[0129] Specifically, the method for controlling the movement speed of the driving component 30 according to the relationship between the temperature of the stator 1 and the target temperature includes: controlling the movement speed of the driving component 30 according to the air volume judgment process, and the air volume judgment process includes: obtaining the air flow rate in the installation cavity, the temperature of the installation cavity, and the temperature of the side of the driving component 30 close to the return air part 200 of the air handling unit; obtaining the first heat exchange amount according to the air flow rate in the installation cavity, the temperature of the installation cavity, and the temperature of the side of the driving component 30 close to the return air part 200; obtaining the heat exchange area in the motor housing 10 of the motor 400, the convective heat transfer coefficient of the motor 400 and the logarithmic mean enthalpy difference of the motor 400; obtaining the second heat exchange amount according to the heat exchange area in the motor housing 10, the convective heat transfer coefficient of the motor 400 and the logarithmic mean enthalpy difference of the motor 400; and adjusting the movement speed of the driving component 30 according to the relationship between the first heat exchange amount and the second heat exchange amount. With such a setting, this precise calculation and control method of heat exchange enables the motor 400 to adjust the airflow speed according to the actual heat exchange requirements, improves the thermal management efficiency of the motor 400, and is suitable for equipment that needs to operate under high load and high efficiency conditions. By accurately calculating and controlling the heat exchange amount, the optimal thermal management state of the motor 400 under high load and high efficiency conditions can be ensured, avoiding performance degradation and equipment failure of the motor 400 caused by improper thermal management, which can significantly improve the operating efficiency and service life of the motor 400 and reduce production costs.

[0130] Specifically, the air flow rate in the installation cavity refers to the maximum air flow rate in the installation cavity. The temperature of the side of the driving member 30 close to the return air portion 200 refers to the maximum temperature of the side of the driving member 30 close to the return air portion 200. Specifically, the air flow rate is obtained by a fan proportional valve flow controller.

[0131] Specifically, the heat exchange area in the motor housing 10 refers to the sum of the heat exchange area between the stator 1 and the rotor 2 in the first air duct 11 and the heat exchange area between the stator 1 and the motor housing 10 in the second air duct 12. The heat exchange area between the stator 1 and the rotor 2 in the first air duct 11 is the sum of the outer surface area of ​​the stator 1 in the first air duct 11 and the outer surface area of ​​the rotor 2. The heat exchange area between the stator 1 and the motor housing 10 in the second air duct 12 is the sum of the outer surface area of ​​the stator 1 in the second air duct 12 and the inner surface area of ​​the motor housing 10.

[0132] Specifically, the convection heat transfer coefficient of the motor 400 is determined according to the material distribution of the copper wire and iron parts inside the motor 400. The logarithmic mean enthalpy difference of the motor 400 is related to the inlet and outlet temperature and humidity of the cooling air in the installation cavity.

[0133] Specifically, the method for obtaining the first heat exchange amount according to the wind flow in the installation cavity, the temperature of the installation cavity, and the temperature of the side of the driver 30 close to the return air portion includes: calculating the first heat exchange amount Q1 according to the formula Q1=S*(T2-T1); wherein S is the wind flow in the installation cavity, T2 is the temperature of the side of the driver 30 close to the return air portion, and T1 is the temperature of the installation cavity. With such a setting, the heat exchange capacity of the cooling air in the installation cavity can be accurately determined, and the effective use of the cooling air can be ensured to avoid overcooling or insufficient cooling. This real-time monitoring and calculation mechanism helps the system to quickly respond to changes in ambient temperature, automatically adjust the cooling strategy of the motor 400, and ensure that the motor 400 can maintain an ideal temperature range under different working conditions.

[0134] Specifically, the method for obtaining the second heat exchange amount according to the heat exchange area in the motor housing 10, the convective heat transfer coefficient of the motor 400 and the logarithmic mean enthalpy difference of the motor 400 includes: calculating the third heat exchange amount Q2 according to the formula Q2=η*A*△h, and calculating the second heat exchange amount Q3 according to the formula Q3=K*Q2; wherein η is the convective heat transfer coefficient of the motor 400, A is the heat exchange area in the motor housing 10, △h is the logarithmic mean enthalpy difference of the motor 400, and K is the correction coefficient. In this way, the calculation of the second heat exchange amount Q3 takes into account the physical characteristics inside the motor 400, including the heat exchange area A, the convective heat transfer coefficient η and the logarithmic mean enthalpy difference △h, which makes the calculation result closer to the actual heat dissipation requirements of the motor 400. By introducing the correction coefficient K, the heat exchange amount can be fine-tuned to more accurately match the heat dissipation requirements of the motor 400, avoiding overcooling or overheating caused by calculation errors. This method can not only improve the cooling accuracy of the motor 400, but also provide a scientific basis for the optimization of the design of the motor 400, which helps to further improve the thermal management performance of the motor 400, extend the service life of the motor 400, and reduce energy consumption.

[0135] Specifically, 0.8≤K≤0.85.

[0136] Specifically, the method for adjusting the moving speed of the driving member 30 according to the magnitude relationship between the first heat exchange amount and the second heat exchange amount includes: when |(Q3-Q1) / Q3|<0.05, keeping the moving speed of the driving member 30 unchanged; when |(Q3-Q1) / Q3|≥0.05, adjusting the moving speed of the driving member 30 and re-entering the air volume judgment process; wherein Q1 is the first heat exchange amount and Q3 is the second heat exchange amount. With such a setting, by comparing the first heat exchange amount Q1 and the second heat exchange amount Q3, the system can dynamically adjust the moving speed of the driving member 30, thereby accurately controlling the cooling air volume and cooling effect of the motor 400. When the heat exchange difference is within the range of ±5%, it indicates that the current cooling air volume is basically matched with the heat dissipation demand of the motor 400, so the moving speed of the driving member 30 does not need to be adjusted, which helps to maintain the stability of the operation of the motor 400. When the difference exceeds this range, the system will adjust the activity speed of the drive member 30, increase or decrease the flow rate of the cooling air, until the heat exchange difference returns to the set reasonable range. This closed-loop control strategy can ensure that the motor 400 can achieve the best cooling effect in various environments, avoiding performance degradation and increased energy consumption caused by unbalanced cooling. This intelligent adjustment mechanism improves the adaptability and energy efficiency of the system, reduces operation and maintenance costs, and enhances the overall performance and safety of the system.

[0137] Specifically, when |(Q3-Q1) / Q3|≥0.05, when Q3>Q1, the moving speed of the driving member 30 is increased; when Q3<Q1, the moving speed of the driving member 30 is decreased. In this way, the moving speed of the driving member 30 can be dynamically adjusted according to the actual heat dissipation demand of the motor 400 and the current heat dissipation amount to achieve the best cooling effect.

[0138] In the third embodiment, the method for controlling the activity speed of the driving member 30 according to the magnitude relationship between the temperature of the stator 1 and the target temperature also includes: controlling the activity speed of the driving member 30 according to the temperature judgment process, the temperature judgment process including: when the working mode is the cooling mode, comparing the temperature Tr of the stator 1 with the target temperature Trm; when Tr≥Trm, entering the air volume judgment process; when Tr<Trm, controlling the driving member 30 to be in the second driving mode and maintaining the first preset time; after controlling the driving member 30 to be in the second driving mode and maintaining the first preset time, re-entering the temperature judgment process. When the working mode is the heating mode, comparing the temperature Tk at the inner surface of the motor housing 10 with the temperature Tr of the stator 1; when Tk≤Tr, entering the air volume judgment process; when Tk>Tr, increasing the activity speed of the driving member 30 to the overheating protection speed and maintaining the second preset time; after increasing the activity speed of the driving member 30 to the overheating protection speed and maintaining the second preset time, re-entering the temperature judgment process. With such a setting, since the motor 400 is in operation, the temperature Tr of the stator 1 is usually greater than the target temperature Trm. When Tr<Trm, that is, the motor 400 is in an overcooling environment, such a setting can reduce the cooling air volume to avoid overcooling of the motor 400, which reflects the system's intelligent response and adaptability to temperature changes and reduces energy waste. When the working mode is the heating mode, it can be considered that the temperature Tr of the stator 1 will inevitably be greater than the target temperature Trm. Therefore, it is necessary to judge the relationship between the temperature Tk at the inner surface of the motor housing 10 and the temperature Tr of the stator 1 to determine whether the motor 400 is in an overheating state, so that when the motor 400 is in an overheating state, the activity speed of the driving member 30 is increased to the overheating protection speed and maintained for a second preset time. This overheating protection mechanism can intervene quickly when the temperature of the motor 400 rises abnormally, and quickly cool down by increasing the cooling air volume to prevent the motor 400 from being damaged due to overheating, thereby improving the safety of the system.

[0139] Specifically, the temperature Tk at the inner surface of the motor case 10 refers to the maximum temperature at the inner surface of the motor case 10 .

[0140] Specifically, the installation cavity includes a first air duct 11 and a second air duct 12, the first air duct 11 is located between the motor housing 10 and the stator 1, and the second air duct 12 is located between the stator 1 and the rotor 2 of the motor 400; the air in the first air duct 11 and the air in the second air duct 12 are both used to pass into the driving member 30. Before controlling the driving member 30 to be in the second driving mode and maintaining the first preset time, the temperature judgment process also includes: making the air volume in the second air duct 12 greater than the air volume in the first air duct 11. With such a setting, the hot air can be mainly in the second air duct 12 and block the cold conduction, reducing the impact of the overcooling environment on the stator 1 and the rotor 2.

[0141] Specifically, the installation cavity includes a first air duct 11 and a second air duct 12, the first air duct 11 is located between the motor housing 10 and the stator 1, and the second air duct 12 is located between the stator 1 and the rotor 2 of the motor 400; the air in the first air duct 11 and the air in the second air duct 12 are both used to pass into the driving member 30. Before the activity speed of the driving member 30 is increased to the overheating protection speed and maintained for a second preset time, the temperature judgment process also includes: making the air volume in the second air duct 12 greater than the air volume in the first air duct 11. With such a setting, by increasing the air volume in the second air duct 12, it is possible to better achieve rapid cooling of the inside of the motor 400, reduce the impact of the overheating environment on the stator 1 and the rotor 2, and avoid the motor 400 from entering an emergency protection state due to overheating. This air volume adjustment mechanism can quickly reduce the risk of overheating while maintaining the normal operation of the motor 400, improve the response speed and safety of the system, reduce unnecessary downtime caused by overheating protection, and ensure the continuous operation of the motor 400 and the stable service of the air conditioning system.

[0142] Specifically, making the air volume in the second air duct 12 greater than the air volume in the first air duct 11 means making the ratio of the air volume in the first air duct 11 to the air volume in the second air duct 12 greater than or equal to 0.1 and less than or equal to 0.5.

[0143] Specifically, making the air volume in the second air duct 12 greater than the air volume in the first air duct 11 means making the ratio of the air volume in the first air duct 11 to the air volume in the second air duct 12 be 0.35.

[0144] Specifically, the air volume in the first air duct 11 refers to the maximum air volume in the first air duct 11 , and the air volume in the second air duct 12 refers to the maximum air volume in the second air duct 12 .

[0145] In the third embodiment, after the driving member 30 of the motor 400 is placed in a first driving mode in which the air in the installation cavity of the motor 400 flows to the driving member 30 or the driving member 30 is placed in a second driving mode in which the air at the driving member 30 flows into the installation cavity, the control method of the motor also includes: calibrating the displacement of the output shaft of the motor 400 according to a displacement calibration process, the displacement calibration process including: obtaining displacement information and current information of the output shaft 3 of the motor 400, and obtaining positioning operation information of the output shaft 3 based on the displacement information and current information; obtaining wind flow trajectory image information in the installation cavity; determining the reference position information of the output shaft 3 in the positioning operation information and the wind flow trajectory image information based on a comparison result between the output shaft position of the positioning operation information and the output shaft position of the wind flow trajectory image information; and calibrating the displacement of the output shaft 3 based on the reference position information so that the deviation of the position of the output shaft 3 is within a preset error range. In the conventional method, the displacement sensor is responsible for collecting and feeding back the radial and axial displacement deviation data of the rotor 2. The fault-tolerant control of the displacement sensor mostly adopts a redundant structure method, that is, a spare displacement sensor is set, and when the displacement sensor in use is detected to fail, the spare sensor is switched to continue working. This method of installing a large number of displacement sensors will not only increase the initial cost of the motor 400 equipment, but also increase the radial radius and axial length of the electromagnetic bearing, making the overall mechanical structure design of the motor 400 more complicated, bringing a lot of inconvenience. By adopting the method in the third embodiment of the present invention, the positioning deviation of the output shaft 3 can be assisted by the image information of the wind flow trajectory in the installation cavity, which can not only significantly improve the performance and accuracy of the system, but also can be used for the system optimization of the motor 400 for long-term data collection. By analyzing the relationship between the airflow pattern and the shaft stability, the design and control strategy of the motor 400 are improved, so that the structure of the motor 400 is miniaturized and energy-efficient.

[0146] Specifically, the wind flow trajectory image information is 360° imaging information of the cooling wind speed trajectory inside the motor 400. The wind flow trajectory image information is obtained using a laser Doppler anemometer.

[0147] Specifically, the method for obtaining the positioning operation information of the output shaft 3 according to the displacement information and the current information includes: inputting the current information and the displacement information into a PID (proportional-integral-differential) algorithm through AD (analog-to-digital conversion) sampling and obtaining the positioning operation information according to the operation result of the PID algorithm. Specifically, the positioning operation information includes duty cycle information.

[0148] Specifically, according to the comparison result between the output axis position of the positioning operation information and the output axis position of the wind flow trajectory image information, the method for determining the output axis reference position information in the positioning operation information and the wind flow trajectory image information includes: judging whether the output axis position data corresponding to the wind flow trajectory image information at a preset time and the output axis position data corresponding to the positioning operation information at the preset time are consistent; when the output axis position data corresponding to the wind flow trajectory image information at the preset time and the output axis position data corresponding to the positioning operation information at the preset time are consistent, determining one of the positioning operation information and the wind flow trajectory image information as the reference position information; when the output axis position data corresponding to the wind flow trajectory image information at the preset time and the output axis position data corresponding to the positioning operation information at the preset time are inconsistent, obtaining the output axis position data of the wind flow trajectory image information within a preset detection time length and the output axis position data of the positioning operation information within the preset detection time length, and determining the reference position information according to the comparison result of the output axis position data of the wind flow trajectory image information within the preset detection time length and the output axis position data of the positioning operation information within the preset detection time length. By adopting such a method, the displacement calibration method based on wind flow trajectory image information and positioning calculation information can more accurately determine the reference position of the output shaft 3, avoid positioning errors caused by sensor abnormalities, and improve the operating accuracy and stability of the motor 400. This precise displacement control capability can significantly improve the operating efficiency and stability of the equipment and reduce maintenance costs and safety risks.

[0149] In the third embodiment, the method for determining the reference position information according to the comparison result of the output shaft position data of the wind flow trajectory image information within the preset detection time and the output shaft position data of the positioning operation information within the preset detection time includes: obtaining the imaging trend according to the output shaft position data of the wind flow trajectory image information within the preset detection time, and determining the output shaft simulation position data according to the imaging trend; obtaining the output shaft position data at the last moment of the preset detection time according to the output shaft position data of the positioning operation information within the preset detection time to obtain the output shaft operation position data; judging whether the output shaft simulation position data and the output shaft operation position data are consistent; when the output shaft simulation position data and the output shaft operation position data are consistent, determining the wind flow trajectory image information as the reference position information; when the output shaft simulation position data and the output shaft operation position data are inconsistent, determining the positioning operation information as the reference position information. With such a method, by combining the wind flow trajectory image information and the positioning operation information for comparison, the system can verify the consistency of two independent displacement detection methods. Within the preset detection time, the wind flow trajectory image information provides a positioning verification based on actual physical phenomena, while the positioning operation information is the calculation result based on mathematical models and control algorithms. The mutual verification of the two methods improves the reliability of the output shaft position data and ensures the accuracy of positioning control. This mechanism can not only quickly identify potential faults in the positioning system (such as sensor misalignment, control parameter errors, etc.), but also take prompt measures when a fault occurs to avoid rotor 2 imbalance or motor 400 performance degradation due to positioning deviation, thereby enhancing the system's intelligent diagnosis and fault response capabilities.

[0150] Specifically, the preset detection time is 5s.

[0151] Specifically, after determining that the positioning operation information is the reference position information, the displacement calibration process also includes: obtaining the output shaft position data corresponding to the wind flow trajectory image information at the preset detection time; judging whether the output shaft position data corresponding to the wind flow trajectory image information at the preset detection time and the output shaft operation position data are consistent; when the output shaft position data corresponding to the wind flow trajectory image information at the preset detection time and the output shaft operation position data are inconsistent, re-determining the wind flow trajectory image information as the reference position information; when the output shaft position data corresponding to the wind flow trajectory image information at the preset detection time and the output shaft operation position data are consistent, re-entering the displacement calibration process. By adopting such a method, the situation of the accidental disturbance inside the motor 400 can be avoided, so as to facilitate the identification of the abnormal state of the sensor, thereby improving the reliability of the output shaft position data and ensuring the accuracy of the positioning control. The wind flow trajectory image information is used as an auxiliary means of positioning calibration, replacing the traditional redundant displacement sensor control method, and reducing the dependence on additional sensors. This not only reduces the initial investment cost of the equipment, but also simplifies the overall structure of the motor 400, making the design of the electromagnetic bearing more compact, reducing the requirements for installation space, and facilitating the miniaturization and integration of the motor 400.

[0152] Specifically, Figure 7As shown, the displacement calibration process also includes: the magnetic levitation motor starts the synchronous sensor in the random group setting mode to collect the displacement information and current information of the suspension axis (equivalent to the output axis 3), which are finally transmitted to the AD sampling chip for storage after being integrated by the signal conditioning circuit, and the data in the AD sampling are collected at a fixed time frequency and transmitted to the PID operation to perform current signal and displacement signal control calculation. At the same time, the LDA device monitors the cooling wind speed trajectory in real time and outputs 360° imaging information (equivalent to the wind flow trajectory image information). The latest result is transmitted to the PID operation to perform the calculation information (equivalent to the positioning calculation information) and the actual cooling wind speed trajectory image information calibration and judgment, and the final PWM (pulse width modulation) signal is output. After being amplified by the power amplifier module, it acts on the winding coil 4, adjusts the size of the coil current and finally realizes the precise control of the displacement of the rotor 2, ensuring the stable suspension of the rotor 2. If the operation information is inconsistent with the cooling wind speed trajectory image information, set a fixed time of 5s to image n groups, compare the trend of the imaging result with the latest result of the operation information during the calibration, and when the two are consistent, fine-tune the PID operation information to output the PWM signal with the imaging as the main factor; when the two are inconsistent, adjust the coil current according to the PID operation information output PWM signal. Due to the contingency of the internal disturbance of the motor 400, in order to conduct secondary verification and continue to detect, after the motor 400 is activated according to the signal, directly enter the LDA device to monitor the cooling wind speed trajectory output 360° imaging image information output in real time, compare the latest imaging information with the PID operation information of the last action, and when the two are consistent, judge that the action is accurate and continue to operate, and the secondary verification is completed to restore the normal control process; if the latest imaging information is compared with the PID operation information of the last action, it is inconsistent, report the abnormal sensor record, output the PWM signal according to the latest imaging information, accurately control and ensure the stable suspension of the rotor 2, feedback the sensor failure of the motor 400 of the unit controller, and use the cooling wind speed trajectory image information as a backup magnetic suspension positioning adjustment control to maintain the normal operation of the unit.

[0153] Embodiment 4 of the present invention provides a motor control device, which is used to execute the motor control method provided in embodiment 3, and the motor control device includes an acquisition unit and a control unit, and the acquisition unit is used to acquire the working mode of the air handling unit. The control unit is used to make the driving member 30 of the motor 400 in a first driving mode that makes the air in the installation cavity of the motor 400 flow to the driving member 30 when the working mode is the cooling mode; and make the driving member 30 in a second driving mode that makes the air at the driving member 30 flow to the installation cavity when the working mode is the heating mode.

[0154] The motor control device provided by the fourth embodiment of the present invention can achieve heat dissipation of the motor 400 only by setting the driving member 30 in coordination with the air supply unit 100 and the return air unit 200, without the need for additional cooling equipment. The clean, low-humidity and low-temperature cold air processed by the air handling unit is directly used as the cooling medium of the motor 400, which saves the need for separately configured cooling equipment, can miniaturize the structure of the magnetic suspension motor, and can be assembled in the combined cabinet structure. It can also extend the service life cycle of the motor 400 and reduce the initial investment cost and operation and maintenance cost. In addition, by automatically switching the driving mode of the air flow direction inside the motor housing 10 according to the temperature difference between the air supply unit 100 and the return air unit 200, the motor 400 can maintain a good cooling effect in different air environments. When the working mode is the cooling mode, the air supply unit 100 contains low-temperature air, and the air naturally flows into the motor housing 10, and is cooled by the low-temperature air. After cooling, the air with increased temperature is discharged from the installation cavity, so as to better ensure heat dissipation; when the working mode is the heating mode, the air supply unit 100 contains high-temperature air, and the relatively low-temperature air in the return air unit 200 is sent into the motor 400 for cooling by the driving member 30 to avoid overheating of the motor 400, and the air with increased temperature is discharged from the installation cavity after cooling. In practical applications, the temperature adaptive adjustment capability of the motor 400 can significantly reduce the damage and efficiency loss of the motor 400 caused by temperature fluctuations, and extend the service life of the motor 400, especially in seasons and environments with frequent temperature changes, such as air conditioning systems in summer and heating equipment in winter. This design can effectively improve the stability of the equipment and user experience. Therefore, the control device for the motor provided in this embodiment can solve the technical problem of the large volume of the heat dissipation device for the magnetic levitation motor in the prior art.

[0155] Embodiment 5 of the present invention provides a non-volatile storage medium, the non-volatile storage medium includes a stored program, wherein when the program is running, the device where the non-volatile storage medium is located is controlled to execute the motor control method provided in embodiment 3.

[0156] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: directly using clean, low-humidity and low-temperature cold air treated by the air handling unit as the motor cooling medium, saving the need for separately configured cooling equipment, miniaturizing the magnetic suspension motor structure, assembling it in the combined cabinet structure, and extending the motor life cycle, reducing the initial investment cost and operation and maintenance costs. By monitoring the internal cooling wind speed trajectory of the motor through LDA and outputting 360° imaging information to assist in the correction of the positioning deviation of the magnetic suspension shaft, not only can the performance and accuracy of the system be significantly improved, but also long-term data can be collected and used for motor system optimization. By analyzing the relationship between the airflow pattern and the shaft stability, the motor design and control strategy can be improved, making the motor structure miniaturized and energy-efficient.

[0157] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0158] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0159] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0160] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0161] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0162] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A motor, characterized in that: include: A motor housing (10), the motor housing (10) enclosing a mounting cavity, the mounting cavity being used to accommodate the stator (1) and the rotor (2); the mounting cavity being in communication with a first air source; A driving member (30) is movably arranged at an end of the installation cavity, and air from a second air source is used to be passed into the driving member (30); Wherein, when the air temperature of the first air source is lower than the air temperature of the second air source, the driving member (30) is in a first driving mode for causing the air in the installation cavity to flow to the driving member (30); and when the air temperature of the first air source is higher than the air temperature of the second air source, the driving member (30) is in a second driving mode for causing the air at the driving member (30) to flow into the installation cavity.

2. The motor according to claim 1, characterized in that The stator (1) is sleeved on the rotor (2); the mounting cavity comprises: a first air duct (11) and a second air duct (12), wherein the first air duct (11) is located between the motor housing (10) and the stator (1), and the second air duct (12) is located between the stator (1) and the rotor (2); air in the first air duct (11) and air in the second air duct (12) are both used to be passed to the driving member (30); Wherein, the motor further comprises a flow guide member, the flow guide member is arranged in the installation cavity and located between the first air duct (11) and the second air duct (12), and the flow guide member is movably arranged.

3. The motor according to claim 1, characterized in that The motor also includes: a first temperature detection member, arranged on the motor housing (10), the first temperature detection member being used to detect the temperature of the installation cavity; and / or, a second temperature detecting member, arranged on a side of the driving member (30) close to the second air source, the second temperature detecting member being used to detect the temperature of a side of the driving member (30) close to the second air source; and / or, A stator temperature detection component is arranged on the stator (1), and is used to detect the temperature of the stator (1).

4. The motor according to claim 1, characterized in that The motor also includes: a wind flow trajectory monitoring component, arranged on the motor housing (10), the wind flow trajectory monitoring component being used to monitor the trajectory of the wind flow in the installation cavity; and / or, a current detection member connected to the output shaft (3) of the motor, the current detection member being used to detect current information of the output shaft (3); and / or, A displacement detection member, wherein a detection head of the displacement detection member is arranged toward the output shaft (3) of the motor, and the displacement detection member is used to detect the displacement of the output shaft (3).

5. An air handling unit, characterized in that: include: The motor according to any one of claims 1 to 4; An air supply unit (100) and an air return unit (200), wherein the air supply unit (100) forms the first air source; and the air return unit (200) forms the second air source.

6. The air handling unit according to claim 5, characterized in that: The motor is arranged in the air supply part (100); and / or, The air handling unit further comprises a connecting pipe (300), one end of which is used to be connected to the driving member (30) of the motor, and the other end of which is in communication with the return air portion (200).

7. A method for controlling a motor, characterized in that: Applicable to the air handling unit according to any one of claims 5 or 6, the control method of the motor comprises: Obtaining the operating mode of the air handling unit; When the working mode is the cooling mode, the driving member of the motor is in a first driving mode in which the air in the installation cavity of the motor flows to the driving member; when the working mode is the heating mode, the driving member is in a second driving mode in which the air at the driving member flows to the installation cavity.

8. The motor control method according to claim 7, characterized in that: After obtaining the working mode of the air handling unit, the motor control method further includes: An initial air flow rate for passing into the installation cavity is obtained according to the temperature of the installation cavity.

9. The motor control method according to claim 8, characterized in that: The obtaining of an initial air flow rate for entering the installation cavity according to the temperature of the installation cavity comprises: The initial air flow rate S0 is calculated according to the formula S0=a*(T1-b); wherein T1 is the temperature of the installation cavity, a is the first coefficient, and b is the second coefficient.

10. The motor control method according to claim 7, characterized in that: The motor control method further includes: Acquiring the temperature of the stator of the motor; The moving speed of the driving member is controlled according to the magnitude relationship between the temperature of the stator and the target temperature, so that the temperature of the stator is reduced to the target temperature.

11. The motor control method according to claim 10, characterized in that: The controlling the moving speed of the driving member according to the magnitude relationship between the temperature of the stator and the target temperature comprises: controlling the moving speed of the driving member according to an air volume determination process, wherein the air volume determination process comprises: Obtaining the air flow rate in the installation cavity, the temperature of the installation cavity, and the temperature of the side of the driving member close to the return air portion of the air handling unit; obtaining a first heat exchange amount according to the air flow rate in the installation cavity, the temperature of the installation cavity, and the temperature of the side of the driving member close to the return air portion; Obtaining a heat exchange area in a motor housing of the motor, a convection heat transfer coefficient of the motor, and a logarithmic mean enthalpy difference of the motor; obtaining a second heat exchange amount according to the heat exchange area in the motor housing, the convection heat transfer coefficient of the motor, and the logarithmic mean enthalpy difference of the motor; The moving speed of the driving member is adjusted according to the magnitude relationship between the first heat exchange amount and the second heat exchange amount.

12. The motor control method according to claim 11, characterized in that: The obtaining of the first heat exchange amount according to the air flow in the installation cavity, the temperature of the installation cavity and the temperature of the side of the driving component close to the return air portion comprises: calculating the first heat exchange amount Q1 according to the formula Q1=S*(T2-T1); wherein S is the air flow in the installation cavity, T2 is the temperature of the side of the driving component close to the return air portion, and T1 is the temperature of the installation cavity; and / or, The obtaining of the second heat exchange amount according to the heat exchange area in the motor housing, the convective heat transfer coefficient of the motor and the logarithmic mean enthalpy difference of the motor comprises: calculating the third heat exchange amount Q2 according to the formula Q2=η*A*△h, and calculating the second heat exchange amount Q3 according to the formula Q3=K*Q2; wherein η is the convective heat transfer coefficient of the motor, A is the heat exchange area in the motor housing, △h is the logarithmic mean enthalpy difference of the motor, and K is a correction coefficient; and / or, The method of adjusting the moving speed of the driving component according to the relationship between the first heat exchange amount and the second heat exchange amount includes: when |(Q3-Q1) / Q3|<0.05, keeping the moving speed of the driving component unchanged; when |(Q3-Q1) / Q3|≥0.05, adjusting the moving speed of the driving component and re-entering the air volume judgment process; wherein Q1 is the first heat exchange amount and Q3 is the second heat exchange amount.

13. The motor control method according to claim 11, characterized in that: The controlling the moving speed of the driving member according to the magnitude relationship between the temperature of the stator and the target temperature further includes: controlling the moving speed of the driving member according to a temperature judgment process, wherein the temperature judgment process includes: When the working mode is a cooling mode, comparing the temperature Tr of the stator with the target temperature Trm; When Tr≥Trm, the air volume judgment process is entered; when Tr<Trm, the driving element is controlled to be in the second driving mode and maintained for a first preset time; after the driving element is controlled to be in the second driving mode and maintained for the first preset time, the temperature judgment process is re-entered; When the working mode is a heating mode, comparing the temperature Tk at the inner surface of the motor housing with the temperature Tr of the stator; When Tk≤Tr, the air volume judgment process is entered; when Tk>Tr, the activity speed of the driving component is increased to the overheat protection speed and maintained for a second preset time; after increasing the activity speed of the driving component to the overheat protection speed and maintaining for the second preset time, the temperature judgment process is re-entered.

14. The motor control method according to claim 13, characterized in that: The installation cavity comprises a first air duct and a second air duct, wherein the first air duct is located between the motor housing and the stator, and the second air duct is located between the stator and the rotor of the motor; the air in the first air duct and the air in the second air duct are both used to be passed to the driving member; Before controlling the driving member to be in the second driving mode and maintaining the first preset time, the temperature judgment process further includes: making the air volume in the second air duct greater than the air volume in the first air duct; and / or, Before increasing the activity speed of the driving member to the overheat protection speed and maintaining it for a second preset time, the temperature judgment process further includes: making the air volume in the second air duct greater than the air volume in the first air duct.

15. The motor control method according to claim 14, characterized in that: The making the air volume in the second air duct greater than the air volume in the first air duct means making the ratio of the air volume in the first air duct to the air volume in the second air duct greater than or equal to 0.1 and less than or equal to 0.

5.

16. The motor control method according to claim 7, characterized in that: After placing the driving member of the motor in a first driving mode in which the air in the installation cavity of the motor flows to the driving member or placing the driving member in a second driving mode in which the air at the driving member flows to the installation cavity, the control method of the motor further includes: calibrating the displacement of the output shaft of the motor according to a displacement calibration process, wherein the displacement calibration process includes: Acquire displacement information and current information of the output shaft of the motor, and acquire positioning operation information of the output shaft according to the displacement information and the current information; Acquiring wind flow trajectory image information in the installation cavity; Determining reference position information of the output axis in the positioning operation information and the wind flow trajectory image information according to a comparison result between the output axis position of the positioning operation information and the output axis position of the wind flow trajectory image information; The displacement of the output shaft is calibrated according to the reference position information so that the deviation of the output shaft position is within a preset error range.

17. The method for controlling a motor according to claim 16, characterized in that: The determining the output shaft reference position information in the positioning operation information and the wind flow trajectory image information according to the comparison result between the output shaft position of the positioning operation information and the output shaft position of the wind flow trajectory image information comprises: judging whether the output shaft position data corresponding to the wind flow trajectory image information at a preset time is consistent with the output shaft position data corresponding to the positioning operation information at a preset time; When the output shaft position data corresponding to the wind flow trajectory image information at a preset time is consistent with the output shaft position data corresponding to the positioning operation information at a preset time, determining one of the positioning operation information and the wind flow trajectory image information as the reference position information; When the output axis position data corresponding to the wind flow trajectory image information at the preset time is inconsistent with the output axis position data corresponding to the positioning operation information at the preset time, the output axis position data of the wind flow trajectory image information within the preset detection time and the output axis position data of the positioning operation information within the preset detection time are obtained, and the reference position information is determined according to the comparison result of the output axis position data of the wind flow trajectory image information within the preset detection time and the output axis position data of the positioning operation information within the preset detection time.

18. The motor control method according to claim 17, characterized in that: The determining of the reference position information according to the comparison result of the output shaft position data of the wind flow trajectory image information within the preset detection time length and the output shaft position data of the positioning operation information within the preset detection time length comprises: Obtaining an imaging trend according to the output shaft position data of the wind flow trajectory image information within a preset detection time, and determining the output shaft simulation position data according to the imaging trend; According to the output shaft position data of the positioning operation information within the preset detection time length, the output shaft position data at the last moment of the preset detection time length is acquired to obtain the output shaft operation position data; Determining whether the output shaft simulation position data and the output shaft calculation position data are consistent; When the output shaft simulation position data and the output shaft calculation position data are consistent, the wind flow trajectory image information is determined to be the reference position information; when the output shaft simulation position data and the output shaft calculation position data are inconsistent, the positioning calculation information is determined to be the reference position information.

19. The motor control method according to claim 18, characterized in that: After determining that the positioning operation information is the reference position information, the displacement calibration process further includes: Obtaining output shaft position data corresponding to the wind flow trajectory image information at a preset detection time; Determine whether the output shaft position data corresponding to the wind flow trajectory image information at a preset detection time is consistent with the output shaft calculation position data; When the output shaft position data corresponding to the wind flow trajectory image information at the preset detection time and the output shaft calculation position data are inconsistent, the wind flow trajectory image information is re-determined as the reference position information; when the output shaft position data corresponding to the wind flow trajectory image information at the preset detection time and the output shaft calculation position data are consistent, the displacement correction process is re-entered.

20. A control device for a motor, characterized in that: For executing the control method of a motor according to any one of claims 7 to 19, the control device of the motor comprises: An acquisition unit, used for acquiring the working mode of the air handling unit; A control unit is used to place the driving member of the motor in a first driving mode so that the air in the installation cavity of the motor flows to the driving member when the working mode is a cooling mode; and to place the driving member in a second driving mode so that the air at the driving member flows to the installation cavity when the working mode is a heating mode.

21. A non-volatile storage medium, characterized in that: The non-volatile storage medium includes a stored program, wherein when the program is executed, the device where the non-volatile storage medium is located is controlled to execute the motor control method according to any one of claims 7 to 19.

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