Method and device for determining rotor position of compressor, air conditioner, and storage medium

Abstract

The present invention discloses a method for determining the rotor position of a compressor. The method comprises: obtaining detection data from a target detection module during operation of the compressor, the target detection module being provided corresponding to the vane and located outside the motion assembly; determining motion characteristic parameters of the vane based on the detection data; and determining rotational position parameters of the rotor based on the motion characteristic parameters. The present invention also discloses a compressor rotor position determination device, an air conditioner, and a computer-readable storage medium. The present invention aims to improve the accuracy of the determined compressor rotor position and effectively enhance the accuracy of compressor control.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a method for determining the rotor position of a compressor, a device for determining the rotor position of a compressor, an air conditioner, and a computer-readable storage medium. Background Art

[0002] With the development of economy and technology, air conditioners are becoming more and more widely used, and their performance is constantly being optimized. Among them, the compressor, as a key component of the air conditioner, generally needs to detect the actual spatial position of its rotor during operation, so as to adjust the compressor operation control based on the detection results.

[0003] At present, the actual spatial position of the rotor in the compressor is generally determined by installing an encoder on the rotor, and the actual spatial position of the rotor in the compressor is determined by the data detected by the encoder. This method not only easily leads to an increase in the rotational inertia of the compressor motor, but the data detected by the encoder is also easily affected by rotor vibration, resulting in inaccurate actual spatial position of the rotor, affecting the accuracy of compressor control. Summary of the Invention

[0004] The main purpose of the present invention is to provide a method for determining the rotor position of a compressor, a device for determining the rotor position of a compressor, an air conditioner and a computer-readable storage medium, aiming to improve the accuracy of the determined rotor position of the compressor and effectively improve the accuracy of compressor control.

[0005] To achieve the above-mentioned object, the present invention provides a method for determining the rotor position of a compressor, wherein the compressor includes a motion assembly, the motion assembly including a rotor, a crankshaft, a piston, and a vane, the rotor being connected to the crankshaft, the piston being sleeved on the outside of the crankshaft, and the vane being in contact with the outer surface of the piston. The method for determining the rotor position of the compressor includes the following steps:

[0006] During the operation of the compressor, detection data detected by a target detection module is acquired, wherein the target detection module is provided corresponding to the sliding vane and is located outside the motion component;

[0007] determining motion characteristic parameters of the slider according to the detection data;

[0008] The rotational position parameters of the rotor are determined according to the motion characteristic parameters.

[0009] Optionally, the crankshaft includes a drive shaft connected to the rotor and an eccentric wheel connected to the drive shaft, the piston is sleeved on an outer side of the eccentric wheel, the motion characteristic parameter includes a sliding displacement of the sliding vane, and the step of determining the rotational position parameter of the rotor based on the motion characteristic parameter includes:

[0010] determining a phase angle of the rotor according to the sliding displacement, wherein the rotational position parameter includes the phase angle;

[0011] The sliding displacement is the distance between the end of the sliding plate abutting against the piston and the centroid of the eccentric wheel, and the phase angle is the angle between the line connecting the axis of the drive shaft and the centroid of the eccentric wheel and the reference direction.

[0012] Optionally, the step of determining the phase angle of the rotor according to the sliding displacement includes:

[0013] Acquiring a preset quantitative relationship; the preset quantitative relationship is a quantitative relationship between the sliding displacement and the phase angle pre-established based on the size parameters of the motion component;

[0014] The sliding displacement is substituted into the preset quantitative relationship to calculate the phase angle.

[0015] Optionally, before the step of acquiring detection data detected by the target detection module, the step further includes:

[0016] establishing a first quantitative relationship between a first angle, a phase angle, and the sliding displacement based on the size parameter;

[0017] establishing a second quantitative relationship between the first angle and the phase angle based on the size parameter;

[0018] Establishing the preset quantitative relationship based on the first quantitative relationship and the second quantitative relationship;

[0019] The first angle is the angle between the reference direction and a line connecting the end of the sliding plate abutting against the piston and the centroid of the eccentric wheel.

[0020] Optionally, the reference direction is the sliding direction of the sliding vane during reciprocating motion during operation of the compressor;

[0021] And / or, the size parameters include the distance between the axis of the drive shaft and the centroid of the eccentric wheel and the first radius of the eccentric wheel.

[0022] Optionally, the end surface of the sliding plate abutting against one end of the piston is an arc surface, the first angle is the angle between the line connecting the center of the arc surface and the centroid of the eccentric wheel and the reference direction, and the sliding displacement is the distance between the center of the arc surface and the centroid;

[0023] And / or, when the size parameter includes the distance and the first radius, the size parameter also includes the second radius of the arc surface.

[0024] Optionally, the method for determining the rotor position of the compressor further includes:

[0025] controlling the compressor to operate at a target frequency;

[0026] In the process of the compressor maintaining the target frequency operation, the step of acquiring the detection data detected by the target detection module is performed.

[0027] Optionally, the crankshaft includes a drive shaft connected to the rotor and an eccentric wheel connected to the drive shaft, the piston is sleeved on an outer side of the eccentric wheel, the rotational position parameter includes a characteristic parameter of a phase angle changing over time, and the step of acquiring detection data detected by the target detection module includes:

[0028] Acquire a plurality of sub-data collected by the target detection module within a preset sampling time according to a preset sampling rate and a preset frequency resolution, wherein the detection data includes the plurality of sub-data;

[0029] The phase angle is the angle between a line connecting the axis of the drive shaft and the centroid of the eccentric wheel and a reference direction.

[0030] Optionally, the target detection module is an eddy current displacement sensor, and the step of acquiring detection data detected by the target detection module includes:

[0031] Obtaining an output voltage of the eddy current displacement sensor, wherein the detection data includes the output voltage, and the output voltage is obtained by the eddy current displacement sensor detecting the distance between a probe thereof and an end of the sliding plate away from the piston;

[0032] Alternatively, the target detection module is a laser detection module, and the step of obtaining detection data detected by the target detection module includes:

[0033] Acquiring light detection data from the laser detection module, the detection data including the light detection data, the light detection data being obtained by the laser detection module detecting a distance between an end of the slide away from the piston and a position where the laser detection module is located based on an optical signal;

[0034] Alternatively, the target detection module is a wire displacement sensor connected to the slide, and the step of acquiring detection data detected by the target detection module includes:

[0035] The wire length data output by the wire displacement sensor is obtained. The detection data includes the wire length data. The wire length data is obtained by the wire displacement sensor detecting the length of the wire connected to the slide.

[0036] Optionally, the compressor further includes a spring connected to the sliding vane, the spring being configured to provide elastic force to maintain the sliding vane in a state of being pressed against the outer surface of the piston. The target detection module is a force detection module, and the step of acquiring detection data detected by the target detection module includes:

[0037] The elastic force value output by the force detection module is obtained, wherein the detection data includes the elastic force value, and the elastic force value is obtained by the force detection module detecting the current elastic force of the spring.

[0038] Optionally, the crankshaft includes a drive shaft connected to the rotor and an eccentric wheel connected to the drive shaft, and an end surface of the sliding vane abutting against one end of the piston is an arc surface. The step of determining the motion characteristic parameters of the sliding vane according to the detection data includes:

[0039] Obtaining the distance between the axis of the drive shaft and the centroid of the eccentric wheel, the first radius of the eccentric wheel, and the second radius of the arc surface;

[0040] The motion characteristic parameter is determined according to the distance, the first radius, the second radius, and the elastic force value.

[0041] Optionally, after the step of determining the rotational position parameters of the rotor according to the motion characteristic parameters, the method further includes:

[0042] Acquiring driving parameters of the compressor;

[0043] determining a predicted rotational position parameter of the rotor based on the driving parameter;

[0044] An operating parameter of the compressor is adjusted according to a deviation between the predicted rotational position parameter and the rotational position parameter.

[0045] In addition, to achieve the above-mentioned purpose, the present application further proposes a rotor position determination device for a compressor, wherein the compressor includes a motion assembly, wherein the motion assembly includes a rotor, a crankshaft, a piston, and a vane, wherein the rotor is connected to the crankshaft, the piston is sleeved on the outside of the crankshaft, and the vane abuts against the outer surface of the piston, and the rotor position determination device for the compressor includes:

[0046] an object detection module, the object detection module being arranged corresponding to the slide and located outside the motion component;

[0047] A control device, the control device is connected to the target detection module, the control device includes: a memory, a processor and a compressor rotor position determination program stored in the memory and executable on the processor, the compressor rotor position determination program, when executed by the processor, implements the steps of the compressor rotor position determination method as described in any one of the above items.

[0048] In addition, in order to achieve the above-mentioned purpose, the present application also proposes an air conditioner, which includes:

[0049] A compressor, the compressor comprising a motion assembly, the motion assembly comprising a rotor, a crankshaft, a piston, and a vane, the rotor being connected to the crankshaft, the piston being sleeved on the outside of the crankshaft, and the vane being in contact with the outer surface of the piston;

[0050] The compressor is connected to the compressor rotor position determining device as described above.

[0051] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a computer-readable storage medium, on which a compressor rotor position determination program is stored. When the compressor rotor position determination program is executed by a processor, the steps of the compressor rotor position determination method as described in any one of the above items are implemented.

[0052] The present invention proposes a method for determining the rotor position of a compressor, which is based on a compressor provided with a motion component including a rotor, a crankshaft, a piston and a vane. During the operation of the compressor, the method determines the motion characteristic parameters of the vane based on detection data of a target detection module corresponding to the vane and provided outside the motion component, and then determines the rotational position parameters of the rotor according to the determined motion characteristic parameters. Based on this, the rotational position of the rotor can be determined without providing a detection module on the rotor. The determined rotational position parameters of the rotor will neither increase the rotational inertia of the motor of the compressor nor be affected by rotor vibration, thereby improving the accuracy of the determined rotor position of the compressor and effectively improving the accuracy of compressor control. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 A schematic structural diagram of a compressor to which the method for determining the rotor position of a compressor of the present invention is applied;

[0054] Figure 2 This is a schematic diagram of the hardware structure involved in the operation of an embodiment of a device for determining the rotor position of a compressor of the present invention;

[0055] Figure 3 This is a structural diagram of the installation position of the target detection module of the compressor rotor position determination device according to an embodiment of the present invention;

[0056] Figure 4 1 is a flow chart of an embodiment of a method for determining the rotor position of a compressor according to the present invention;

[0057] Figure 5 FIG. 4 is a flow chart of another embodiment of a method for determining the rotor position of a compressor according to the present invention.

[0058] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0059] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0060] The main solution of an embodiment of the present invention is: based on a compressor provided with a moving component including a rotor, a crankshaft, a piston and a vane, detection data detected by a target detection module is obtained, and the target detection module is set corresponding to the vane and is located outside the moving component; the motion characteristic parameters of the vane are determined according to the detection data; and the rotational position parameters of the rotor are determined according to the motion characteristic parameters.

[0061] In the prior art, an encoder is generally installed on the rotor to determine the actual spatial position of the rotor in the compressor. The data detected by the encoder is used to determine the actual spatial position of the rotor in the compressor. This method not only easily leads to an increase in the rotational inertia of the compressor motor, but the data detected by the encoder is also easily affected by rotor vibration, resulting in inaccurate actual spatial position of the rotor, affecting the accuracy of compressor control.

[0062] The present invention provides the above-mentioned solution, aiming to improve the accuracy of the determined rotor position of the compressor and effectively improve the accuracy of compressor control.

[0063] An embodiment of the present invention provides a compressor rotor position determination device, which is used to determine the rotational position of a compressor rotor.

[0064] Specifically, refer to Figure 1 The compressor used in the compressor rotor position determination device includes a motion component, which includes a rotor, a crankshaft 1, a piston 2 and a vane 3. The rotor is connected to the crankshaft 1, the piston 2 is sleeved on the outside of the crankshaft 1, and the vane 3 abuts against the outer surface of the piston 2.

[0065] The rotor is specifically the rotating part of the motor in the compressor. During the operation of the motor, the crankshaft 1 drives the piston 2 to rotate under the drive of the rotor. During the eccentric rotation of the piston 2, the vane 3 reciprocates along the radial direction of the piston 2.

[0066] Further, refer to Figure 1 The crankshaft 1 specifically includes a drive shaft 11 fixedly connected to the rotor and an eccentric wheel 12 connected to the drive shaft 11 , and the piston 2 is sleeved on the outer side of the eccentric wheel 12 .

[0067] Further, refer to Figure 1 The compressor further includes a spring 4 connecting the housing 01 and the vane 3, the spring 4 being used to provide elastic force to keep the vane 3 in contact with the outer surface of the piston 2. The motion assembly and the spring 4 are both disposed in the housing 01.

[0068] Specifically, one end of the spring 4 is fixed to the inner wall of the housing 01, and the other end of the spring 4 is fixedly connected to the end of the slide 3 away from the piston 2. The spring 4 is maintained in a contracted state to provide elastic force for the slide 3. This elastic force drives the slide 3 to reciprocate in a radial direction of the piston 2 during the eccentric rotation of the piston 2 to maintain a state of abutment against the piston 2.

[0069] In this embodiment, the sliding piece 3 is a metal sliding piece. In other embodiments, the sliding piece 3 may also be a non-metallic sliding piece as long as it has functions similar to those of a metal sliding piece.

[0070] Based on the above compressor, in the embodiment of the present invention, referring to Figure 2 The compressor rotor position determination device includes a target detection module 5 and a control device. The target detection module 5 is set corresponding to the slide 3 and is located outside the motion component. The target detection module 5 is connected to the control device.

[0071] In one implementation, Figure 3 As shown in (a), the target detection module 5 is an eddy current displacement sensor 51.

[0072] The eddy current displacement sensor 51 can be used to detect the distance between its probe and the end of the slide 3 away from the piston 2. When the eddy current displacement sensor 51 detects different distances, the eddy current displacement sensor 51 has different output voltages.

[0073] The eddy current displacement sensor 51 can be specifically installed in the casing 01 of the compressor. The casing 01 can be provided with a threaded hole at the position corresponding to the spring 4. The eddy current displacement sensor 51 can be installed in the casing 01 through the threaded hole and fixed to the casing 01 through a locking nut.

[0074] The probe of the eddy current displacement sensor 51 extends into the inner cavity of the shell 01. The probe has a preset effective detection range. The size of the metal shrapnel entering the detection range of the probe will continue to change during the movement, and the output voltage of the eddy current displacement sensor 51 will also continue to change. Based on this, with the probe as the base point, the output voltage can represent the distance between the end of the metal shrapnel away from the piston 2 and the base point.

[0075] In another implementation, Figure 3 As shown in (b), the target detection module 5 is a laser detection module 52 .

[0076] The laser detection module 52 can detect the distance between the light signal emission position and the end of the slide 3 away from the piston 2 based on the light signal.

[0077] Specifically, the laser detection module 52 can emit a laser toward the end of the slide 3 away from the piston 2. The laser can be reflected on the surface of the metal slide, and the reflected light signal can be received by the laser detection module 52. Based on the time difference between emitting the laser and receiving the reflected light signal, the distance between the position of the laser detection module 52 and the end of the slide 3 away from the piston 2 can be determined.

[0078] Specifically, the laser detection module 52 includes a light-transmitting mirror 521 (such as a transparent glass oil mirror, etc.) and a laser vibrometer 522. The light-transmitting mirror 521 is installed on the outer shell 01 of the compressor, and the laser vibrometer 522 is installed outside the outer shell 01 of the compressor and is aligned with the light-transmitting mirror 521. The laser emitted by the laser vibrometer 522 can pass through the light-transmitting mirror 521 to enter the interior of the compressor and reach the surface of the metal shrapnel. The reflected light formed after the metal shrapnel reflects the laser can pass through the light-transmitting mirror 521 to be emitted to the outside of the compressor and reach the laser vibrometer 522. The laser vibrometer 522 can detect the reflected light.

[0079] In yet another implementation, Figure 3 As shown in (c), the target detection module 5 is a force detection module 53. The force detection module 53 is used to detect the elastic force value of the spring 4.

[0080] The degree to which the slide 3 compresses the spring 4 during its movement varies, resulting in different spring forces. Based on this, the spring force value can accurately represent the current position of the slide 3. In this embodiment, the force detection module 53 is mounted on the inner wall of the housing 01. One end of the spring 4 is fixedly connected to the force detection module 53, and the other end of the spring 4 is fixedly connected to the slide 3. In other embodiments, the force detection module 53 can also be located inside the housing 01 and spaced apart from the spring 4.

[0081] In another embodiment, the target detection module 5 may be a wire displacement sensor, which includes a wire and a detection unit connected to the wire, wherein the wire is connected to the slide 3, and the detection unit may be mounted on the inner wall of the housing 01. The length of the wire varies depending on the movement position of the slide 3, and the detection unit may detect the movement position of the slide 3 by detecting the length of the wire.

[0082] Among them, reference Figure 2The control device includes a processor 1001 (e.g., a CPU), a memory 1002, and the like. Memory 1002 can be a high-speed RAM memory or a non-volatile memory, such as a disk drive. Memory 1002 can also optionally be a storage device independent of processor 1001.

[0083] Those skilled in the art will understand that Figure 2 The device structure shown in the figure does not constitute a limitation of the device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0084] like Figure 2 As shown, the memory 1002 as a computer readable storage medium may include a compressor rotor position determination program. Figure 2 In the device shown, the processor 1001 can be used to call the compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0085] During the operation of the compressor, detection data detected by a target detection module is acquired, wherein the target detection module is provided corresponding to the sliding vane and is located outside the motion component;

[0086] determining motion characteristic parameters of the slider according to the detection data;

[0087] The rotational position parameters of the rotor are determined according to the motion characteristic parameters.

[0088] Furthermore, the crankshaft includes a drive shaft connected to the rotor and an eccentric connected to the drive shaft, the piston is sleeved on the outside of the eccentric, and the motion characteristic parameter includes the sliding displacement of the sliding vane. The processor 1001 can be used to call the compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0089] determining a phase angle of the rotor according to the sliding displacement, wherein the rotational position parameter includes the phase angle;

[0090] The sliding displacement is the distance between the end of the sliding plate abutting against the piston and the centroid of the eccentric wheel, and the phase angle is the angle between the line connecting the axis of the drive shaft and the centroid of the eccentric wheel and the reference direction.

[0091] Furthermore, the processor 1001 may be configured to call a compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0092] Acquiring a preset quantitative relationship; the preset quantitative relationship is a quantitative relationship between the sliding displacement and the phase angle pre-established based on the size parameters of the motion component;

[0093] The sliding displacement is substituted into the preset quantitative relationship to calculate the phase angle.

[0094] Furthermore, the processor 1001 may be configured to call a compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0095] Before the step of acquiring detection data detected by the target detection module, a first quantitative relationship between the first angle, the phase angle and the sliding displacement is established based on the size parameter;

[0096] establishing a second quantitative relationship between the first angle and the phase angle based on the size parameter;

[0097] Establishing the preset quantitative relationship based on the first quantitative relationship and the second quantitative relationship;

[0098] The first angle is the angle between the reference direction and a line connecting the end of the sliding plate abutting against the piston and the centroid of the eccentric wheel.

[0099] Furthermore, the processor 1001 may be configured to call a compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0100] Setting the reference direction as the sliding direction of the sliding vane during reciprocating motion during operation of the compressor;

[0101] And / or, at least the distance between the axis of the drive shaft and the centroid of the eccentric wheel and the first radius of the eccentric wheel are obtained as the size parameters.

[0102] Furthermore, the end surface of the sliding plate abutting against one end of the piston is an arc surface, the first angle is set to be the angle between the line between the center of the arc surface and the centroid of the eccentric wheel and the reference direction, and the sliding displacement is set to be the distance between the center of the arc surface and the centroid;

[0103] And / or, at least the distance between the axis of the drive shaft and the centroid of the eccentric wheel, the first radius of the eccentric wheel and the second radius of the arc surface are obtained as the size parameters.

[0104] Furthermore, the processor 1001 may be configured to call a compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0105] controlling the compressor to operate at a target frequency;

[0106] In the process of the compressor maintaining the target frequency operation, the step of acquiring the detection data detected by the target detection module is performed.

[0107] Furthermore, the crankshaft includes a drive shaft connected to the rotor and an eccentric connected to the drive shaft, the piston is sleeved on the outside of the eccentric, and the rotational position parameter includes a characteristic parameter of a phase angle changing over time. The processor 1001 can be used to call a rotor position determination program for the compressor stored in the memory 1002 and perform the following operations:

[0108] Acquire a plurality of sub-data collected by the target detection module within a preset sampling time according to a preset sampling rate and a preset frequency resolution, wherein the detection data includes the plurality of sub-data;

[0109] The phase angle is the angle between a line connecting the axis of the drive shaft and the centroid of the eccentric wheel and a reference direction.

[0110] Furthermore, the target detection module is an eddy current displacement sensor, and the processor 1001 can be used to call the compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0111] The output voltage of the eddy current displacement sensor is obtained, where the detection data includes the output voltage, and the output voltage is obtained by the eddy current displacement sensor detecting the distance between its probe and the end of the sliding plate away from the piston.

[0112] Furthermore, the target detection module is an eddy current displacement sensor, and the processor 1001 can be used to call the compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0113] The optical detection data of the laser detection module is obtained, where the detection data includes the optical detection data, which is obtained by the laser detection module detecting the distance between the end of the slide away from the piston and the position of the laser detection module based on the optical signal.

[0114] Furthermore, the target detection module is a wire displacement sensor connected to the slide, and the processor 1001 can be used to call the compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0115] The wire length data output by the wire displacement sensor is obtained. The detection data includes the wire length data. The wire length data is obtained by the wire displacement sensor detecting the length of the wire connected to the slide.

[0116] Furthermore, the compressor further includes a spring connected to the sliding vane, the spring being configured to provide elastic force to maintain the sliding vane in a state of being pressed against the outer surface of the piston. The target detection module is a force detection module. The processor 1001 may be configured to call a compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0117] The elastic force value output by the force detection module is obtained, wherein the detection data includes the elastic force value, and the elastic force value is obtained by the force detection module detecting the current elastic force of the spring.

[0118] Furthermore, the crankshaft includes a drive shaft connected to the rotor and an eccentric wheel connected to the drive shaft. The end surface of the sliding vane abutting against one end of the piston is an arc surface. The processor 1001 can be used to call the compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0119] Obtaining the distance between the axis of the drive shaft and the centroid of the eccentric wheel, the first radius of the eccentric wheel, and the second radius of the arc surface;

[0120] The motion characteristic parameter is determined according to the distance, the first radius, the second radius, and the elastic force value.

[0121] Furthermore, the processor 1001 may be configured to call a compressor rotor position determination program stored in the memory 1002 and perform the following operations:

[0122] After the step of determining the rotation position parameter of the rotor according to the motion characteristic parameter, the method further includes:

[0123] Acquiring driving parameters of the compressor;

[0124] determining a predicted rotational position parameter of the rotor based on the driving parameter;

[0125] An operating parameter of the compressor is adjusted according to a deviation between the predicted rotational position parameter and the rotational position parameter.

[0126] Furthermore, an embodiment of the present invention provides an air conditioner. The air conditioner includes the aforementioned compressor rotor position determination device and the aforementioned compressor, wherein the compressor is connected to the rotor position determination device, the target detection module in the rotor position determination device is disposed on the compressor, and both the compressor and the target detection module are connected to a control device.

[0127] Specifically, the compressor includes a moving assembly, which includes a rotor, a crankshaft 1, a piston 2 and a vane 3. The rotor is connected to the crankshaft 1, the piston 2 is sleeved on the outside of the crankshaft 1, and the vane 3 abuts against the outer surface of the piston 2.

[0128] The rotor is specifically the rotating part of the motor in the compressor. During the operation of the motor, the crankshaft 1 drives the piston 2 to rotate under the drive of the rotor. During the eccentric rotation of the piston 2, the vane 3 reciprocates along the radial direction of the piston 2.

[0129] Further, refer to Figure 1 The crankshaft 1 specifically includes a drive shaft 11 fixedly connected to the rotor and an eccentric wheel 12 connected to the drive shaft 11 , and the piston 2 is sleeved on the outer side of the eccentric wheel 12 .

[0130] Further, refer to Figure 1 The compressor further includes a spring 4 connecting the housing 01 and the vane 3, the spring 4 being used to provide elastic force to keep the vane 3 in contact with the outer surface of the piston 2. The motion assembly and the spring 4 are both disposed in the housing 01.

[0131] Specifically, one end of the spring 4 is fixed to the inner wall of the housing 01, and the other end of the spring 4 is fixedly connected to the end of the slide 3 away from the piston 2. The spring 4 is maintained in a contracted state to provide elastic force for the slide 3. This elastic force drives the slide 3 to reciprocate in a radial direction of the piston 2 during the eccentric rotation of the piston 2 to maintain a state of abutment against the piston 2.

[0132] In this embodiment, the sliding piece 3 is a metal sliding piece. In other embodiments, the sliding piece 3 may also be a non-metallic sliding piece as long as it has functions similar to those of a metal sliding piece.

[0133] An embodiment of the present invention further provides a method for determining the position of a compressor rotor, which is applied to determine the position of a compressor rotor.

[0134] Reference Figure 4 , an embodiment of a method for determining the rotor position of a compressor of the present application is proposed. In this embodiment, the method for determining the rotor position of the compressor includes:

[0135] Step S10, during the operation of the compressor, acquiring detection data detected by a target detection module, wherein the target detection module is provided corresponding to the sliding vane and is located outside the motion component;

[0136] The target detection module is located in the sliding direction of the vane. During compressor operation, the spring moves back and forth linearly, driven by the piston's rotation. During this reciprocating linear motion, the target detection module detects different data when the vane is not in motion. Based on this data, the current motion state of the vane can be characterized.

[0137] The detection data here may be a data value detected by the target detection module at a certain moment, or may include multiple sub-data detected by the target detection module over a period of time.

[0138] Step S20, determining motion characteristic parameters of the slider according to the detection data;

[0139] Different detection data represents different sliding vane motion states, and thus may correspond to different sliding vane motion characteristic parameters. In this embodiment, the motion characteristic parameters include the sliding vane's sliding displacement, specifically the distance between a first position marker on the sliding vane and a second position marker on the crankshaft or piston. In other embodiments, the motion characteristic parameters may also include sliding velocity, sliding acceleration, or sliding position.

[0140] Based on the type of target detection module, a first correspondence between detection data and motion characteristic parameters may be pre-established, which may be a calculation relationship, a mapping relationship, etc. The sliding motion characteristic parameters corresponding to the current detection data may be determined based on the pre-set first correspondence.

[0141] Step S30: determining the rotational position parameters of the rotor according to the motion characteristic parameters.

[0142] The rotational position parameter here is specifically a parameter that characterizes the positional characteristics of the rotor's rotational position. In this embodiment, the rotational characteristic parameter is the rotor's phase angle; in other embodiments, the rotational characteristic parameter may also be the displacement, path length, coordinates, etc. of a preset marking point on the rotor.

[0143] Different motion characteristic parameters correspond to different rotational position parameters. A second correspondence between the rotational position parameter and the motion characteristic parameter can be pre-set based on the structural characteristics of the motion component. The second correspondence can be a calculation formula, a mapping relationship, or the like. Based on this second correspondence, the corresponding rotational position parameter can be obtained by calculating the current motion characteristic parameter or by querying the mapping relationship for matching.

[0144] A method for determining the rotor position of a compressor proposed in an embodiment of the present invention is based on a compressor provided with a motion component including a vane, a piston, a crankshaft and a rotor. During the operation of the compressor, the method determines the motion characteristic parameters of the vane based on detection data of a target detection module corresponding to the vane and provided outside the motion component, and then determines the rotational position parameters of the rotor according to the determined motion characteristic parameters. Based on this, the rotational position of the rotor can be determined without providing a detection module on the rotor. The determined rotational position parameters of the rotor will neither increase the rotational inertia of the motor of the compressor nor be affected by rotor vibration, thereby improving the accuracy of the determined rotor position of the compressor and effectively improving the accuracy of compressor control.

[0145] Furthermore, based on the above embodiment, another embodiment of the method for determining the rotor position of the compressor of the present application is proposed. In this embodiment, the crankshaft includes a drive shaft connected to the rotor and an eccentric wheel connected to the drive shaft, the piston is sleeved on the outer side of the eccentric wheel, and the motion characteristic parameter includes the sliding displacement of the vane. Figure 5 , step S30 includes:

[0146] Step S30a, determining a phase angle of the rotor according to the sliding displacement, wherein the rotation position parameter includes the phase angle;

[0147] The sliding displacement is the distance between the end of the slide abutting against the piston and the centroid of the eccentric wheel (e.g. Figure 1 X in v ), the phase angle is the angle between the line connecting the axis of the drive shaft and the centroid of the eccentric wheel and the reference direction (such as Figure 1 θ in θ).

[0148] In this embodiment, the reference direction is the sliding direction of the vane during reciprocating motion during operation of the compressor. In other embodiments, it can also be set to other directions according to actual needs, such as other directions perpendicular to or intersecting the sliding direction.

[0149] In this embodiment, the end surface of the sliding plate abutting the piston is an arc surface, and the sliding displacement is the distance between the center of the arc surface and the centroid. In other embodiments, the sliding displacement may also be the shortest distance between the surface of the end of the sliding plate abutting the piston and the centroid; or the distance between the end of the sliding plate facing away from the piston and the outer wall of the piston.

[0150] Specifically, the phase angle here can be obtained by sliding displacement calculation or querying mapping relationship matching.

[0151] In this embodiment, since the position to which the spring moves under the drive of the piston is different when the rotor rotates to different angles, the phase angle of the rotor is determined by the sliding displacement of the spring as a characteristic parameter characterizing the rotation position of the rotor, which is beneficial to further improve the accuracy of the determined rotor position of the compressor.

[0152] Furthermore, in this embodiment, step S30a includes:

[0153] Step S31, obtaining a preset quantitative relationship; the preset quantitative relationship is a quantitative relationship between the sliding displacement and the phase angle pre-established based on the size parameters of the motion component;

[0154] The dimensional parameters of the motion component may specifically include one or more of the following dimensions: a first dimensional parameter of the rotor (such as radius or cross-sectional area, etc.), a second dimensional parameter of the crankshaft (such as eccentricity, radius, circumference or cross-sectional area of ​​the eccentric wheel, etc.), a third dimensional parameter of the piston (such as inner diameter, outer diameter, circumference or cross-sectional area, etc.), and a fourth dimensional parameter of the vane (the length of the end of the vane abutting against the piston, the width of the end of the vane abutting against the piston, the radius of the end of the vane abutting against the piston, or the overall length of the vane, etc.).

[0155] Specifically, in one embodiment, the dimensional parameters include the distance between the axis of the drive shaft and the centroid of the eccentric, and the first radius of the eccentric. In another embodiment, the end surface of the sliding vane abutting one end of the piston is an arc surface, and the dimensional parameters include the distance between the axis of the drive shaft and the centroid of the eccentric, the first radius of the eccentric, and the second radius of the arc surface.

[0156] The preset quantitative relationship may be specifically an equation with the size parameter of the motion component as a known quantity, the sliding displacement as an independent variable, and the phase angle as a dependent variable.

[0157] Step S32: Substitute the sliding displacement into the preset quantitative relationship to calculate the phase angle.

[0158] Specifically, the sliding displacement is used as a known quantity in the equation, and the result obtained by calculation can be used as the phase angle.

[0159] In this embodiment, the phase angle of the rotor corresponding to the sliding displacement is calculated by using a preset quantitative relationship established based on the size parameters of the motion component. The obtained phase angle can accurately characterize the characteristics of the rotational position of the rotor, thereby further improving the accuracy of the determined rotor position of the compressor.

[0160] Furthermore, in this embodiment, before the step of obtaining the detection data detected by the target detection module, the step further includes: establishing a first quantitative relationship between the first angle, the phase angle and the sliding displacement based on the size parameter; establishing a second quantitative relationship between the first angle and the phase angle based on the size parameter; establishing the preset quantitative relationship based on the first quantitative relationship and the second quantitative relationship; the first angle is the angle between the line connecting the end of the slide abutting against the piston and the centroid of the eccentric wheel and the reference direction (such as Figure 1 ε in ).

[0161] Combine Figure 1 The following uses an example in which the dimension parameters include the first radius of the eccentric wheel, the distance between the centroid of the eccentric wheel and the axis of the drive shaft, and the second radius of the arc surface (i.e., the end surface of the sliding vane abutting against the piston) to illustrate the process of establishing the preset quantitative relationship of the present application:

[0162] Taking the centroid O of the eccentric wheel as the coordinate origin, the direction of movement of the slider as the reference direction X direction, and the direction perpendicular to the X direction as the Y direction, the kinematic equation of the slider is established as follows:

[0163] ——Formula 1;

[0164] Using the theory of interior angle relations of trigonometric functions, we can establish the angle relation equation:

[0165] ——Formula 2;

[0166] Among them, X v is the sliding displacement, θ is the phase angle, ε is the first angle, r v is the second radius, r is the first radius, and e is the distance between the centroid of the eccentric wheel and the axis center of the drive shaft.

[0167] Formula 1 above is the first quantitative relationship, and Formula 2 is the second quantitative relationship. By combining Formula 1 and Formula 2, an equation (i.e., a preset quantitative relationship) with sliding displacement as the independent variable and phase angle as the dependent variable is established as follows:

[0168] .

[0169] In this embodiment, the preset quantitative relationship determined by combining the second quantitative relationship with the first quantitative relationship is used to ensure the accuracy of the phase angle determined based on the preset quantitative relationship, thereby further improving the accuracy of the determined rotor position of the compressor.

[0170] It should be noted that the preset quantitative relationship can also be a quantitative relationship between the rotational position parameters and the motion characteristic parameters established based on the size parameters of the motion component. Based on this, in other embodiments, when the motion characteristic parameters are other types of parameters other than sliding displacement, and the rotational position parameters are other types of parameters other than phase angle, the rotational position parameters corresponding to the current slider motion characteristic parameters can also be determined by analogy with the process of establishing the preset quantitative relationship and the related process of applying the preset quantitative relationship to determine the rotational position parameters mentioned in this embodiment.

[0171] Furthermore, based on any of the above embodiments, another embodiment of the method for determining the rotor position of the compressor of the present application is proposed. In this embodiment, multiple implementation methods of the detection data corresponding to the target detection module are provided:

[0172] In one implementation, the target detection module is an eddy current displacement sensor, and the step of obtaining detection data detected by the target detection module includes: obtaining an output voltage of the eddy current displacement sensor, the detection data including the output voltage, the output voltage being obtained by the eddy current displacement sensor detecting a distance between a probe thereof and an end of the sliding plate away from the piston;

[0173] In another implementation, the target detection module is a laser detection module, and the step of obtaining detection data detected by the target detection module includes: obtaining light detection data of the laser detection module, the detection data including the light detection data, the light detection data being obtained by the laser detection module detecting a distance between an end of the slide away from the piston and a position where the laser detection module is located based on an optical signal;

[0174] In another implementation, the target detection module is a wire displacement sensor connected to the slide, and the step of obtaining detection data detected by the target detection module includes: obtaining the wire length data output by the wire displacement sensor, and the detection data includes the wire length data, and the wire length data is obtained by the wire displacement sensor detecting the length of the wire connected to the slide.

[0175] In another implementation, the compressor also includes a spring connected to the slide, and the spring is used to provide elastic force to keep the slide in a state of being pressed against the outer surface of the piston. The target detection module is a force detection module, and the step of obtaining detection data detected by the target detection module includes: obtaining the elastic force value output by the force detection module, and the detection data includes the elastic force value, and the elastic force value is obtained by the force detection module detecting the current elastic force of the spring.

[0176] Based on this, during compressor operation, the module type of the target detection module can be first obtained, and the above detection data can be obtained based on the obtained module type. For example, if the module type is a force detection module, the elastic force value is obtained as the detection data; if the module type is a laser detection module, the light detection data is obtained as the detection data, and so on.

[0177] Wherein, when the target detection module is a force detection module, the crankshaft includes a drive shaft connected to the rotor and an eccentric wheel connected to the drive shaft, and the end surface of the sliding vane abutting against one end of the piston is an arc surface. The step of determining the motion characteristic parameters of the sliding vane based on the detection data includes: obtaining the distance between the axis of the drive shaft and the centroid of the eccentric wheel, the first radius of the eccentric wheel, and the second radius of the arc surface; and determining the motion characteristic parameters based on the distance, the first radius, the second radius, and the elastic force value. For example, when the motion characteristic parameter is the sliding displacement mentioned in the above embodiment, the sliding displacement can be determined based on the following quantitative relationship:

[0178] ;

[0179] in, is the elasticity value, is the sliding displacement, k is the spring stiffness, is the distance between the centroid of the eccentric wheel and the axis of the drive shaft, r v is the second radius, and r is the first radius.

[0180] Based on this, the motion characteristic parameters of the sliding vane can be accurately obtained by combining the eccentricity of the crankshaft, the first radius of the eccentric wheel, the second radius of the arc surface and the elastic force value.

[0181] In this embodiment, the detection data of the detection module that characterizes the motion characteristics of the slider is acquired in any of the above-mentioned ways, which can ensure that the acquired detection data can accurately characterize the motion characteristic parameters of the slider, thereby achieving the accurate rotor rotation position without setting up a detection module on the rotor, thereby improving the accuracy of the determined rotor rotation position.

[0182] Furthermore, based on any of the above embodiments, the method for determining the rotor position of a compressor further includes: controlling the compressor to operate at a target frequency; and executing the step of acquiring detection data detected by the target detection module while the compressor maintains operation at the target frequency. The target frequency may be a preset fixed value, or a value determined based on the current operating conditions of the air conditioner (such as the indoor and outdoor ambient temperatures). Collecting detection data from the target detection module to determine the rotational position of the rotor while the compressor maintains operation at a certain frequency ensures that the compressor is operating in a steady state during the detection data acquisition process, thereby preventing errors in the rotor position determination result caused by excessive fluctuations in the compressor frequency, and thereby improving the accuracy of the determined rotor rotational position.

[0183] Further, based on any of the above embodiments, the crankshaft includes a drive shaft connected to the rotor and an eccentric wheel connected to the drive shaft, the piston sleeve is arranged on the outside of the eccentric wheel, and the rotational position parameter includes a characteristic parameter of the phase angle changing with time. The step of obtaining the detection data detected by the target detection module includes: obtaining multiple sub-data collected by the target detection module within a preset sampling time according to a preset sampling rate and a preset frequency resolution, and the detection data includes the multiple sub-data; wherein, the phase angle is the angle between the line between the axis of the drive shaft and the centroid of the eccentric wheel and the reference direction.

[0184] For example, during the operation of the compressor, multiple sub-data collected by the target detection module within 10 seconds at a sampling rate of 2048 Hz and a frequency resolution of 0.5 Hz can be used as detection data.

[0185] In this embodiment, the above-mentioned method can be used to accurately determine the change in the rotational position of the rotor.

[0186] Furthermore, based on any of the above embodiments, after determining the rotational position parameters of the rotor based on the motion characteristic parameters, the method further includes: obtaining drive parameters of the compressor; determining predicted rotational position parameters of the rotor based on the drive parameters; and adjusting operating parameters of the compressor based on the deviation between the predicted rotational position parameters and the rotational position parameters. The drive parameters herein may specifically include input current or input power, etc. In this manner, the operating parameters of the compressor can be corrected based on accurate rotor position parameters, thereby effectively improving the accuracy of compressor control.

[0187] This invention patent protects three methods and devices for identifying the spatial phase of a rotor compressor rotor system. The technical effects that can be achieved are mainly reflected in three points, as follows:

[0188] First, the technical solution of this invention solves the key technical problem of accurately and real-timely capturing the spatial position of the compressor motor rotor system, even when the high-temperature, high-pressure, and highly corrosive refrigerant conditions inside the rotor compressor cannot be visualized.

[0189] This technical solution captures the compressor's true rotor spatial position and provides a good real reference signal for verifying the accuracy of the position estimation algorithm, one of the important components of variable frequency vector control technology, to further optimize the control algorithm.

[0190] Second, the technical solution of the present invention does not have a related sensor installed on the rotor compressor motor rotor system, which solves the technical drawbacks of the parameter change of the moment of inertia of the compressor motor rotor system caused by the use of a position encoder;

[0191] Refer to the following frequency conversion basic torque compensation theory:

[0192]

[0193] in:

[0194] : Rotational inertia of the compressor motor rotor system;

[0195] : rotor angular velocity;

[0196] : rotor system damping;

[0197] : compressor motor torque;

[0198] : compressor resistance torque;

[0199] Based on the above basic theory, the previous verification of the algorithm estimation accuracy of the "position estimation algorithm" basically adopted the installation of a position encoder on the compressor motor rotor system. Due to the introduction of the position encoder and auxiliary installation tooling, part of the rotational inertia was introduced into the rotor system. , rather than the actual moment of inertia of the finished compressor motor itself , which will cause errors to be introduced into the position estimation algorithm.

[0200] Through the implementation of this patented technical method, since no relevant sensor components and tooling are installed on the rotor compressor motor rotor system, the captured position information is the position information of the finished compressor motor body under its actual rotational inertia, and the accuracy is greatly improved.

[0201] Third, the "visualization" of the motion information of relevant components inside the compressor is indirectly realized. In the technical solution of the present invention, the measurement position is far away from the stator and rotor ends of the compressor motor, and there is no need to perform a large amount of filtering processing on the signal. The signal robustness is good, and the rotor phase identification accuracy is not affected by the fluctuation of the compressor motor parameters.

[0202] In the early stage, it has been demonstrated that when the sensor is built into the rotor compressor, the feasibility of the technical solution of extracting the relevant signals inside the compressor under normal operation of the compressor can be achieved through the dual BNC connector, and the signal acquisition and output are realized through external acquisition equipment, and the signal is more robust.

[0203] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0204] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0205] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better embodiment. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0206] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for determining the rotor position of a compressor, wherein the compressor comprises a motion assembly, the motion assembly comprising a rotor, a crankshaft, a piston, and a vane, the rotor being connected to the crankshaft, the piston being sleeved on the outside of the crankshaft, and the vane being in contact with the outer surface of the piston, characterized in that: The method for determining the rotor position of the compressor comprises the following steps: During the operation of the compressor, detection data detected by a target detection module is acquired, wherein the target detection module is provided corresponding to the sliding vane and is located outside the motion component; determining motion characteristic parameters of the slider according to the detection data; determining a rotational position parameter of the rotor according to the motion characteristic parameter; The crankshaft includes a drive shaft connected to the rotor and an eccentric wheel connected to the drive shaft, the piston is sleeved on the outer side of the eccentric wheel, the motion characteristic parameter includes the sliding displacement of the sliding vane, and the step of determining the rotational position parameter of the rotor based on the motion characteristic parameter includes: determining a phase angle of the rotor according to the sliding displacement, wherein the rotational position parameter includes the phase angle; The sliding displacement is the distance between the end of the sliding plate abutting against the piston and the centroid of the eccentric wheel, and the phase angle is the angle between the line connecting the axis of the drive shaft and the centroid of the eccentric wheel and the reference direction.

2. The method for determining the rotor position of a compressor according to claim 1, wherein: The step of determining the phase angle of the rotor according to the sliding displacement comprises: Acquiring a preset quantitative relationship; the preset quantitative relationship is a quantitative relationship between the sliding displacement and the phase angle pre-established based on the size parameters of the motion component; The sliding displacement is substituted into the preset quantitative relationship to calculate the phase angle.

3. The method for determining the rotor position of a compressor according to claim 2, wherein: Before the step of obtaining detection data detected by the target detection module, the method further includes: establishing a first quantitative relationship between a first angle, a phase angle, and the sliding displacement based on the size parameter; establishing a second quantitative relationship between the first angle and the phase angle based on the size parameter; Establishing the preset quantitative relationship based on the first quantitative relationship and the second quantitative relationship; The first angle is the angle between the reference direction and a line connecting the end of the sliding plate abutting against the piston and the centroid of the eccentric wheel.

4. The method for determining the rotor position of a compressor according to claim 3, wherein: The reference direction is the sliding direction of the sliding vane when the sliding vane reciprocates during the operation of the compressor; And / or, the size parameters include the distance between the axis of the drive shaft and the centroid of the eccentric wheel and the first radius of the eccentric wheel.

5. The method for determining the rotor position of a compressor according to claim 4, wherein: The end surface of the sliding plate abutting against one end of the piston is an arc surface, the first angle is the angle between the line connecting the center of the arc surface and the centroid of the eccentric wheel and the reference direction, and the sliding displacement is the distance between the center of the arc surface and the centroid; And / or, when the size parameter includes the distance and the first radius, the size parameter also includes the second radius of the arc surface.

6. The method for determining the rotor position of a compressor according to claim 1, wherein: The method for determining the rotor position of the compressor further includes: controlling the compressor to operate at a target frequency; In the process of the compressor maintaining the target frequency operation, the step of acquiring the detection data detected by the target detection module is performed.

7. The method for determining the rotor position of a compressor according to claim 1, wherein: The rotation position parameter includes a characteristic parameter of a phase angle changing over time, and the step of acquiring detection data detected by the target detection module includes: Acquire a plurality of sub-data collected by the target detection module within a preset sampling time according to a preset sampling rate and a preset frequency resolution, wherein the detection data includes the plurality of sub-data; The phase angle is the angle between a line connecting the axis of the drive shaft and the centroid of the eccentric wheel and a reference direction.

8. The method for determining the rotor position of a compressor according to any one of claims 1 to 7, wherein: The target detection module is an eddy current displacement sensor, and the step of obtaining detection data detected by the target detection module includes: Obtaining an output voltage of the eddy current displacement sensor, wherein the detection data includes the output voltage, and the output voltage is obtained by the eddy current displacement sensor detecting the distance between a probe thereof and an end of the sliding plate away from the piston; Alternatively, the target detection module is a laser detection module, and the step of obtaining detection data detected by the target detection module includes: Acquiring light detection data from the laser detection module, the detection data including the light detection data, the light detection data being obtained by the laser detection module detecting a distance between an end of the slide away from the piston and a position where the laser detection module is located based on an optical signal; Alternatively, the target detection module is a wire displacement sensor connected to the slide, and the step of acquiring detection data detected by the target detection module includes: The wire length data output by the wire displacement sensor is obtained. The detection data includes the wire length data. The wire length data is obtained by the wire displacement sensor detecting the length of the wire connected to the slide.

9. The method for determining the rotor position of a compressor according to any one of claims 1 to 7, wherein: The compressor further includes a spring connected to the sliding vane, the spring being configured to provide elastic force to maintain the sliding vane in a state of being pressed against the outer surface of the piston. The target detection module is a force detection module, and the step of acquiring detection data detected by the target detection module includes: The elastic force value output by the force detection module is obtained, wherein the detection data includes the elastic force value, and the elastic force value is obtained by the force detection module detecting the current elastic force of the spring.

10. The method for determining the rotor position of a compressor according to claim 9, wherein: The end surface of the sliding plate abutting against one end of the piston is an arc surface, and the step of determining the motion characteristic parameters of the sliding plate according to the detection data includes: Obtaining the distance between the axis of the drive shaft and the centroid of the eccentric wheel, the first radius of the eccentric wheel, and the second radius of the arc surface; The motion characteristic parameter is determined according to the distance, the first radius, the second radius, and the elastic force value.

11. The method for determining the rotor position of a compressor according to any one of claims 1 to 7, wherein: After the step of determining the rotation position parameter of the rotor according to the motion characteristic parameter, the method further includes: Acquiring driving parameters of the compressor; determining a predicted rotational position parameter of the rotor based on the driving parameter; An operating parameter of the compressor is adjusted according to a deviation between the predicted rotational position parameter and the rotational position parameter.

12. A device for determining the rotor position of a compressor, the compressor comprising a motion assembly, the motion assembly comprising a rotor, a crankshaft, a piston, and a vane, the rotor being connected to the crankshaft, the piston being sleeved on the outside of the crankshaft, the vane being in contact with the outer surface of the piston, the crankshaft comprising a drive shaft connected to the rotor and an eccentric wheel connected to the drive shaft, the piston being sleeved on the outside of the eccentric wheel, characterized in that: The rotor position determining device of the compressor comprises: an object detection module, the object detection module being arranged corresponding to the slide and located outside the motion component; A control device, the control device is connected to the target detection module, the control device includes: a memory, a processor, and a compressor rotor position determination program stored in the memory and executable on the processor, the compressor rotor position determination program, when executed by the processor, implements the steps of the compressor rotor position determination method according to any one of claims 1 to 11.

13. An air conditioner, characterized in that: The air conditioner comprises: A compressor, the compressor comprising a motion assembly, the motion assembly comprising a rotor, a crankshaft, a piston, and a vane, the rotor being connected to the crankshaft, the piston being sleeved on the outside of the crankshaft, the vane being in contact with the outer surface of the piston, the crankshaft comprising a drive shaft connected to the rotor and an eccentric wheel connected to the drive shaft, the piston being sleeved on the outside of the eccentric wheel; The compressor rotor position determining device according to claim 12, wherein the compressor is connected to the compressor rotor position determining device.

14. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a compressor rotor position determination program, which, when executed by a processor, implements the steps of the compressor rotor position determination method according to any one of claims 1 to 11.

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