Integrated intelligent sensing experiment motor set
By using an integrated intelligent sensing experimental motor unit, which switches motor modes through control and monitoring modules, the problems of frequent motor replacement and experimental errors in traditional experimental motor platforms are solved, achieving efficient and low-cost experimental operation.
Patent Information
- Application Number
- CN202511520803.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2025-12-09
AI Technical Summary
Traditional experimental motor platforms require frequent motor replacements, resulting in high costs, large footprint, and a high risk of experimental errors.
An integrated intelligent sensing experimental motor unit is adopted, including a support platform, speed and torque sensors, DC motor, coupling and shaft adjuster, and AC motor. The motor mode switching and monitoring are realized through control module and monitoring module, reducing mechanical alignment and electrical wiring operations.
It reduces the frequency of motor replacement, saves costs, reduces the footprint of the experimental platform, improves experimental efficiency, and reduces experimental errors.
Smart Images
Figure CN121091084A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of experimental motor platform technology, and more specifically, to an integrated intelligent sensing experimental motor unit. Background Technology
[0002] In scientific research and industrial experiments, motor characteristic experiments are indispensable. Traditional experimental motor platforms typically use independent motor equipment, such as independent DC motors, DC generators, squirrel-cage asynchronous motors, wound-rotor asynchronous motors, synchronous generators, etc. When conducting different experiments, it is necessary to frequently change motors, re-align and reconnect them mechanically, and modify electrical wiring. This approach may have the following problems: it requires the purchase of multiple independent motors, resulting in high costs and a large footprint on the experimental platform; mechanical installation and electrical wiring are required every time the experimental project is changed, reducing experimental efficiency; and mechanical alignment and complex wiring are prone to experimental errors due to improper operation during each mechanical installation.
[0003] Therefore, it is necessary to propose an integrated intelligent sensing experimental motor unit to at least partially solve the problems existing in the prior art. Summary of the Invention
[0004] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.
[0005] To at least partially solve the above problems, the present invention provides an integrated intelligent sensing experimental motor unit, comprising: a support platform on which a speed and torque sensor, a DC motor, a coupling adjuster, and an AC motor are arranged in sequence; the DC motor and the AC motor are respectively equipped with multiple measuring sensors; The coupling adjuster is used to connect and lock the shaft B of the DC motor and the shaft A of the AC motor, and is also used to switch the AC motor to operate in different motor working modes. The control module is used to control the coupling adjuster according to the required experimental mode, so as to switch the AC motor to operate in the corresponding motor working mode; The monitoring module, connected to the speed and torque sensor and multiple measurement sensors, is used to monitor DC and AC motors.
[0006] Preferably, the operating modes of the AC motor include: synchronous generator operating mode, wound-rotor induction motor operating mode, and squirrel-cage induction motor operating mode.
[0007] Preferably, when the DC motor is in motor operating mode, it acts as a prime mover to drive the AC motor. The control module controls the coupling adjuster to produce the first action, and through the switching of the excitation power supply and the variable resistor, the AC motor is made to operate in synchronous generator operating mode to complete the synchronous generator experiment and the DC motor experiment.
[0008] Preferably, when the DC motor is in generator mode, it serves as the load of the AC motor to complete the experiment of the DC generator; The control module controls the coupling adjuster to produce the first action, and through the switching of the excitation power supply and the variable resistor, enables the AC motor to operate in the wound-rotor asynchronous motor working mode, thus completing the experiment of the wound-rotor asynchronous motor. The control module controls the coupling adjuster to produce a second action, causing the AC motor to operate in the squirrel-cage asynchronous motor working mode, thus completing the experiment of the squirrel-cage asynchronous motor.
[0009] Preferably, the AC motor includes: a housing A, a bearing, a squirrel-cage rotor, a stator A, an inner rotor, and a shaft A arranged sequentially from the outside to the inside. The housing A is mounted on a support platform via a base A. An external gear is also provided inside the bearing. One side of the external gear is connected to one end of the squirrel-cage rotor. An internal gear is also provided inside the external gear. The internal gear is connected to the shaft A. The shaft A is also provided with a first slip ring corresponding to the working mode of a wound-rotor asynchronous motor and a second slip ring corresponding to the working mode of a synchronous generator. The coupling adjuster is used to engage or disengage the external and internal gears.
[0010] Preferably, the stator A includes: a stator core A, with an outer winding and an inner winding respectively on its outer and inner sides; When the AC motor is in squirrel-cage asynchronous motor operating mode, the external winding is energized to generate a rotating magnetic field, which drives the squirrel-cage rotor to rotate. When the AC motor operates in wound-rotor asynchronous motor mode, the inner winding is energized to generate a rotating magnetic field, which drives the inner rotor to rotate. When the AC motor operates in synchronous generator mode, the inner winding is cut by the rotating magnetic field generated by the inner rotor, producing a three-phase symmetrical AC output.
[0011] Preferably, the inner rotor includes: a rotor core A, on which a wound-rotor asynchronous motor winding and a synchronous generator excitation winding are provided. The wound-rotor asynchronous motor winding is distributed in the slots of the rotor core A in a full-pitch star connection. When a three-phase symmetrical alternating current is applied, a circular rotating magnetic field will be generated. The synchronous generator excitation winding is distributed in the slots of the rotor core A in a concentrated winding form. When a direct current is applied, a spatially symmetrical magnetic field with four polarities will be generated.
[0012] Preferably, the base A is provided with a horizontal vibration sensor A, a vertical vibration sensor A and a junction box A, the junction box A is provided with a power sensor A, and the stator core A is provided with 8 temperature sensors A. The terminals of the outer winding, inner winding, wound asynchronous motor winding, and synchronous generator excitation winding are all led out to junction box A. Junction box A has a built-in signal processing circuit board A, which receives input signals from horizontal vibration sensor A, vertical vibration sensor A, power sensor A, and temperature sensor A. After signal processing, the signals are output through a serial bus. The serial bus is led out through the guide rail groove on the support platform and connected to the monitoring module.
[0013] Preferably, the DC motor includes: a housing B, a stator B, a rotor B, a commutator and a shaft B arranged sequentially from the outside to the inside; the housing B is mounted on a support platform via a base B; and the commutator is also provided with brushes B. The stator B includes a stator core B and an excitation winding B disposed thereon, and the rotor B includes a rotor core B and an armature winding disposed thereon.
[0014] Preferably, the base B is equipped with a horizontal vibration sensor B, a vertical vibration sensor B, and a junction box B. The junction box B is equipped with a power sensor B. The stator core B is equipped with multiple temperature sensors B. The excitation winding B and the armature winding are both connected to the junction box B and led out through the guide rail groove on the support platform. The junction box B has a built-in signal processing circuit board B, which receives the input signals from the horizontal vibration sensor B, the vertical vibration sensor B, the power sensor B, and the temperature sensor B. After signal processing, the signals are output through a serial bus, which is led out through the guide rail groove. The signal processing circuit board B also outputs a control signal to the coupling adjuster to control the axial movement of the coupling adjuster.
[0015] Compared with the prior art, the present invention has at least the following beneficial effects: The integrated intelligent sensing experimental motor unit of this invention includes multiple measuring sensors on the DC and AC motors, as well as speed and torque sensors, used to intelligently sense the operating status of the DC and AC motors and transmit the data to the monitoring module for monitoring and acquiring the required data during the experiment. The coupling adjuster is controlled by the control module to switch the operating mode of the AC motor, allowing the AC motor to adapt to different experiments in different operating modes. This eliminates the need for frequent motor replacements, avoids the need for mechanical alignment and electrical wiring changes, saves costs, reduces the footprint of the experimental platform, improves the efficiency of the experimental process, and reduces experimental errors.
[0016] The integrated intelligent sensing experimental motor unit of the present invention, other advantages, objectives and features of the present invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of the present invention. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the integrated intelligent sensing experimental motor unit described in this invention; Figure 2 This is a side view of the AC motor in the integrated intelligent sensing experimental motor unit described in this invention. Figure 3 This is an exploded structural diagram of the AC motor in the integrated intelligent sensing experimental motor unit described in this invention. Figure 4 This is a schematic diagram of the stator A structure of the AC motor in the integrated intelligent sensing experimental motor unit described in this invention; Figure 5 This is a schematic diagram of the internal rotor structure of the AC motor in the integrated intelligent sensing experimental motor unit described in this invention. Figure 6 This is a side view of the DC motor in the integrated intelligent sensing experimental motor unit described in this invention. Figure 7 This is a schematic diagram of the first shaft segment of the coupling in the integrated intelligent sensing experimental motor unit described in this invention; Figure 8 This is a schematic diagram of the second shaft segment of the coupling in the integrated intelligent sensing experimental motor unit described in this invention; Figure 9 This is a schematic diagram of the working process of the coupling adjuster in the integrated intelligent sensing experimental motor unit described in this invention; Figure 10 This is a schematic diagram of signal acquisition and transmission of the speed and torque sensor and multiple measurement sensors in the integrated intelligent sensing experimental motor unit described in this invention.
[0018] In the attached diagram, 1 is the sensor bracket, 2 is the support platform, 3 is the speed and torque sensor, 4 is the DC motor, 4_1 is the housing B, 4_2 is the stator B, 4_3 is the rotor B, 4_4 is the commutator, 4_5 is the shaft B, 4_6 is the base B, 4_7 is the junction box B, 4_8 is the horizontal vibration sensor B, 4_9 is the vertical vibration sensor B, 4_10 is the temperature sensor B, 4_11 is the power sensor B, 4_12 is the brush B, 5 is the coupling shaft adjuster, 5_1 is the first shaft section, 5_2 is the second shaft section, 5_3 is the meshing groove, 5_4 is the meshing tooth, 6 is the AC motor, 6_1 is the housing A, 6_2 is the bearing, 6_ 3 is the external gear, 6_4 is the internal gear, 6_5 is the shaft A, 6_6 is the base A, 6_7 is the junction box A, 6_8 is the squirrel-cage rotor, 6_9 is the stator A, 6_9_1 is the stator core A, 6_9_2 is the external winding, 6_9_3 is the internal winding, 6_10 is the internal rotor, 6_10_1 is the rotor core A, 6_10_2 is the wound-rotor asynchronous motor winding, 6_10_3 is the synchronous generator excitation winding, 6_11 is the first connecting slip ring, 6_12 is the second connecting slip ring, 6_13 is the horizontal vibration sensor A, 6_14 is the vertical vibration sensor A, 6_15 is the electrical quantity sensor A, and 6_16 is the temperature sensor A. Detailed Implementation
[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.
[0020] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.
[0021] like Figures 1-10 As shown, the present invention provides an integrated intelligent sensing experimental motor unit, comprising: a support platform 2, on which a speed and torque sensor 3, a DC motor 4, a coupling adjuster 5 and an AC motor 6 are arranged in sequence; the DC motor 4 and the AC motor 6 are respectively provided with multiple measuring sensors; The coupling adjuster 5 is used to connect and lock the rotating shaft B4_5 of the DC motor 4 and the rotating shaft A6_5 of the AC motor 6, and is also used to switch the AC motor 6 to operate in different motor working modes. The control module is used to control the coupling adjuster 5 according to the required experimental mode, so as to switch the AC motor 6 to operate in the corresponding motor working mode. The monitoring module, connected to the speed and torque sensor 3 and multiple measurement sensors, is used to monitor the DC motor 4 and the AC motor 6.
[0022] The speed and torque sensor 3 is mounted on the support platform 2 via the sensor bracket 1 and is used to measure the speed and torque of the DC motor 4.
[0023] Multiple measuring sensors on DC motor 4 and AC motor 6, along with speed and torque sensor 3, are used to intelligently sense the operating status of DC motor 4 and AC motor 6 and transmit the data to the monitoring module for monitoring and acquiring the required data during the experiment. The coupling adjuster 5 is controlled by the control module to switch the operating mode of AC motor 6, allowing AC motor 6 to adapt to different experiments in different operating modes. This eliminates the need for frequent motor replacements, avoids mechanical alignment and electrical wiring changes, saves costs, reduces the footprint of the experimental platform, improves the efficiency of the experimental process, and reduces experimental errors.
[0024] In one embodiment, the operating modes of the AC motor 6 include: synchronous generator operating mode, wound-rotor asynchronous motor operating mode, and squirrel-cage asynchronous motor operating mode.
[0025] The AC motor 6 integrates three structures and functions: a three-phase squirrel-cage asynchronous motor, a three-phase wound-rotor asynchronous motor, and a three-phase synchronous generator. The operation modes of the three motors can be switched by the action of the coupling adjuster 5 to complete different experiments.
[0026] In one embodiment, when the DC motor 4 is in motor operating mode, it acts as a prime mover to drive the AC motor 6. The control module controls the coupling adjuster 5 to produce a first action, and through the switching of the excitation power supply and the variable resistor, the AC motor 6 is made to operate in synchronous generator operating mode to complete the synchronous generator experiment and the DC motor experiment.
[0027] When DC motor 4 is in motor operating mode, the coupling adjuster 5 generates the first action, enabling AC motor 6 to act as a synchronous generator, completing experiments on the operating characteristics and parallel operation of synchronous generators. In addition, DC motor 4, acting as a DC motor, can also simultaneously complete experiments related to DC motors.
[0028] In one embodiment, when the DC motor 4 is in generator mode, it serves as the load of the AC motor 6 to complete the experiment of the DC generator. The control module controls the coupling adjuster 5 to produce the first action, and through the switching of the excitation power supply and the variable resistor, enables the AC motor 6 to operate in the wound-rotor asynchronous motor working mode, thus completing the experiment of the wound-rotor asynchronous motor. The control module controls the coupling adjuster 5 to produce a second action, so that the AC motor 6 operates in the squirrel-cage asynchronous motor working mode, thus completing the experiment of the squirrel-cage asynchronous motor.
[0029] When the DC motor 4 is used as a generator, three types of experiments can be completed: the first is to use the DC motor 4 as a load of the AC motor 6 to complete the DC generator experiment; the second is to use the AC motor 6 as a wound-rotor induction motor to complete the starting and speed regulation experiments of the wound-rotor induction motor; the third is to use the AC motor 6 as a squirrel-cage induction motor to complete the operating characteristics, starting and speed regulation experiments of the squirrel-cage induction motor.
[0030] like Figure 2 and Figure 3 As shown, in one embodiment, the AC motor 6 includes: a housing A6_1, a bearing 6_2, a squirrel-cage rotor 6_8, a stator A6_9, an inner rotor 6_10, and a rotating shaft A6_5 arranged sequentially from the outside to the inside. The housing A6_1 is mounted on the support platform 2 via a base A6_6. An external gear 6_3 is also provided inside the bearing 6_2. One side of the external gear 6_3 is connected to one end of the squirrel-cage rotor 6_8. An internal gear 6_4 is also provided inside the external gear 6_3. The internal gear 6_4 is connected to the rotating shaft A6_5. The rotating shaft A6_5 is also provided with a first connecting slip ring 6_11 corresponding to the working mode of a wound-rotor asynchronous motor, and a second connecting slip ring 6_12 corresponding to the working mode of a synchronous generator. The coupling adjuster 5 is used to engage the external gear 6_3 and the internal gear 6_4, or to disengage the external gear 6_3 and the internal gear 6_4.
[0031] The external gear 6_3 rotates synchronously with the squirrel-cage rotor 6_8, and the internal gear 6_4 rotates synchronously with the shaft A6_5. When the coupling adjuster 5 performs a second action to fully mesh the external gear 6_3 and the internal gear 6_4, the internal gear 6_4 drives the shaft A6_5 to rotate synchronously with the squirrel-cage rotor 6_8. At this time, the AC motor 6 can be used as a squirrel-cage asynchronous motor for experiments. When the coupling adjuster 5 performs a first action to fully disengage the external gear 6_3 and the internal gear 6_4, the AC motor 6 can be used as a synchronous generator or a wound-rotor asynchronous motor for experiments.
[0032] In one embodiment, the coupling adjuster 5 includes a coupling and a linear motor. The coupling is coaxially arranged with the shaft B4_5 of the DC motor 4 and the shaft A6_5 of the AC motor 6. The linear motor can be arranged on the shaft B4_5 of the DC motor 4 and is used to control the axial movement of the coupling.
[0033] Specifically, this invention provides two technical solutions for couplings: The first method is to make the internal gear 6_4 and the rotating shaft A6_5 move axially with the coupling; The coupling includes a first component connected to the rotating shaft B4_5 and a second component connected to the rotating shaft A6_5. The first and second components are slidably connected in the axial direction and connected at the upper limit in the radial direction. A linear motor is used to control the axial movement of the second component, synchronously driving the rotating shaft A6_5 and the internal gear 6_4 to move. The internal gear 6_4 and the external gear 6_3 can generate relative movement in the axial direction. When the coupling adjuster 5 produces the first action, it puts the internal gear 6_4 and the external gear 6_3 in the disengaged position, and the two are disengaged. When the coupling adjuster 5 produces the second action, it puts the internal gear 6_4 and the external gear 6_3 in the engaged position, and the two are engaged and connected for transmission.
[0034] The second method is to prevent the internal gear 6_4 and the rotating shaft A6_5 from axial movement. like Figure 7 and Figure 8 As shown, the coupling is slidably connected to the rotating shaft B4_5. There is a safe clearance distance between the outer tooth surface of the internal gear 6_4 and the inner tooth surface of the external gear 6_3. When the internal gear 6_4 rotates, it will not drive the external gear 6_3 to rotate. The coupling includes two interconnected first shaft sections 5_1 and second shaft sections 5_2. The inner side of the first shaft section 5_1 is provided with a meshing groove 5_3 corresponding to the internal gear 6_4, and the outer side is provided with meshing teeth 5_4 corresponding to the external gear 6_3. The inner side of the second shaft section 5_2 is also provided with a meshing groove 5_3 corresponding to the internal gear 6_4, and the outer side is a cylindrical surface. When the first shaft segment 5_1 is inserted between the internal gear 6_4 and the external gear 6_3, the internal gear 6_4 and the external gear 6_3 are engaged. When the second shaft segment 5_2 is inserted between the internal gear 6_4 and the external gear 6_3, the internal gear 6_4 and the external gear 6_3 are disengaged, and the internal gear 6_4 is only engaged with the coupling.
[0035] like Figure 4 As shown, in one embodiment, the stator A6_9 includes: a stator core A6_9_1, with an outer winding 6_9_2 and an inner winding 69_3 respectively on its outer and inner sides; When the AC motor 6 is in the squirrel-cage asynchronous motor working mode, the outer winding 6_9_2 is energized to generate a rotating magnetic field, which drives the squirrel-cage rotor 6_8 to rotate. When the AC motor 6 is in the working mode of a wound-rotor asynchronous motor, the inner winding 6_9_3 is energized to generate a rotating magnetic field, which drives the inner rotor 6_10 to rotate. When the AC motor 6 is in synchronous generator mode, the inner winding 6_9_3 is cut by the rotating magnetic field generated by the inner rotor 6_10, producing a three-phase symmetrical AC output.
[0036] Stator A6_9 often adopts a structure with inner and outer double windings, with both the outer winding 6_9_2 and the inner winding 69_3 connected in a star configuration; When AC motor 6 operates in squirrel-cage asynchronous motor mode, DC motor 4 operates in generator mode (as the load of AC motor 6). External gear 6_3 and internal gear 6_4 are fully meshed, and the external winding 6_9_2 is energized to generate a rotating magnetic field, which drives the squirrel-cage rotor 6_8 to rotate, thereby driving the meshing external gear 6_3 and internal gear 6_4 to rotate synchronously. At the same time, it drives the coupling adjuster 5 to rotate, which can drive the rotating shaft B4_5 of DC motor 4 to rotate, realizing power generation. It can simultaneously complete the experiment of DC generator and squirrel-cage asynchronous motor. When AC motor 6 operates in wound-rotor asynchronous motor mode, DC motor 4 operates in generator mode (as the load of AC motor 6). External gear 6_3 and internal gear 6_4 are completely disengaged. The internal winding 6_9_3 is energized to generate a rotating magnetic field, which drives the internal rotor 6_10 to rotate, thereby driving the shaft A6_5 to rotate. This causes the internal gear 6_4 connected to the shaft A6_5 to rotate synchronously, and at the same time drives the coupling adjuster 5 to rotate. This can drive the shaft B4_5 of DC motor 4 to rotate, thus generating electricity. It can simultaneously complete the experiments of DC generator and wound-rotor asynchronous motor. When AC motor 6 is in synchronous generator mode and DC motor 4 is in electric motor mode, the coupling adjuster 5 performs its first action, causing the external gear 6_3 and internal gear 6_4 to completely disengage. Through the coupling adjuster 5, the internal gear 6_4 and the shaft A6_5 of AC motor 6 are driven to rotate synchronously, causing the internal rotor 6_10 to rotate synchronously. The internal winding 6_9_3 is cut by the rotating magnetic field generated by the internal rotor 6_10, producing a three-phase symmetrical AC output, which can complete experiments such as the operation characteristics of synchronous generator and parallel operation.
[0037] like Figure 5 As shown, in one embodiment, the inner rotor 6_10 includes: a rotor core A6_10_1, on which a wound-rotor asynchronous motor winding 6_10_2 and a synchronous generator excitation winding 6_10_3 are provided. The wound-rotor asynchronous motor winding 6_10_2 is distributed in the slots of the rotor core A6_10_1 in a full-pitch star connection. When a three-phase symmetrical alternating current is applied, a circular rotating magnetic field will be generated. The synchronous generator excitation winding 6_10_3 is distributed in the slots of the rotor core A6_10_1 in a concentrated winding form. When a direct current is applied, a spatially symmetrical magnetic field with four polarities will be generated.
[0038] The wound-rotor asynchronous motor winding 6_10_2 is energized in the wound-rotor asynchronous motor operating mode, so as to rotate under the drive of the rotating magnetic field generated by the energized inner winding 6_9_3. The synchronous generator excitation winding 6_10_3 is energized in the synchronous generator operating mode, so that the inner winding 6_93 is cut by the rotating magnetic field generated by the inner rotor 6_10, and a three-phase symmetrical AC output is generated.
[0039] like Figure 2 , Figure 4 and Figure 10 As shown, in one embodiment, the base A6_6 is provided with a horizontal vibration sensor A6_13, a vertical vibration sensor A6_14 and a junction box A6_7, the junction box A6_7 is provided with a power sensor A6_15, and the stator core A6_9_1 is provided with eight temperature sensors A6_16. The terminals of the outer winding 6_9_2, inner winding 6_9_3, wound-rotor asynchronous motor winding 6_10_2, and synchronous generator excitation winding 6_10_3 are all led out to junction box A6_7. Junction box A6_7 has a built-in signal processing circuit board A, which receives input signals from horizontal vibration sensor A6_13, vertical vibration sensor A6_14, power sensor A6_15, and temperature sensor A6_16. After signal processing, the signals are output through a serial bus. The serial bus is led out through the guide rail groove on the support platform 2 and connected to the monitoring module.
[0040] The multiple measuring sensors on the AC motor 6 include: a horizontal vibration sensor A6_13, a vertical vibration sensor A6_14, a power sensor A6_15, and a temperature sensor A6_16; the terminals of the wound asynchronous motor winding 6_10_2 and the synchronous generator excitation winding 6_10_3 are led out through the sliding contact of the brush A and the first terminal slip ring 6_11 and the second terminal slip ring 6_12.
[0041] The AC motor 6 uses multiple measuring sensors and speed and torque sensors 3 for intelligent sensing and monitoring. The collected data is then transmitted to the monitoring module, which monitors and acquires the experimental data of the AC motor 6 to obtain the experimental results. The AC motor 6 can operate in three motor working modes, and the same multiple measuring sensors monitor the data in all three modes to improve the accuracy of the experimental results.
[0042] like Figure 6 As shown, in one embodiment, the DC motor 4 includes: a housing B4_1, a stator B4_2, a rotor B4_3, a commutator 4_4, and a rotating shaft B4_5 arranged sequentially from the outside to the inside. The housing B4_1 is mounted on the support platform 2 via a base B4_6, and the commutator 4_4 is also provided with brushes B4_12. The stator B4_2 includes a stator core B and an excitation winding B disposed thereon, and the rotor B4_3 includes a rotor core B and an armature winding disposed thereon.
[0043] In motor mode, DC motor 4 is connected to a DC power source through brush B4_12, thereby converting electrical energy into mechanical energy. In generator mode, when AC motor 6 drives the armature (rotor B4_3) of DC motor 4 to rotate, DC motor 4 switches to generator mode. Brush B4_12 draws out DC electromotive force to convert mechanical energy into electrical energy. Therefore, DC motor 4 can switch between motor and generator modes.
[0044] like Figure 6 and Figure 10 As shown, the base B4_6 is further equipped with a horizontal vibration sensor B4_8, a vertical vibration sensor B4_9, and a junction box B4_7. The junction box B4_7 is equipped with a power sensor B4_11. The stator core B is equipped with multiple temperature sensors B4_10. The excitation winding B and the armature winding are both connected to the junction box B4_7 and led out through the guide rail groove on the support platform 2. The junction box B4_7 has a built-in signal processing circuit board B, which receives the input signals from the horizontal vibration sensor B4_8, the vertical vibration sensor B4_9, the power sensor B4_11, and the temperature sensor B4_10. After signal processing, the signals are output through a serial bus, which is led out through the guide rail groove. The signal processing circuit board B also outputs a control signal to the coupling adjuster 5 to control the axial movement of the coupling adjuster 5.
[0045] Among them, the DC motor 4 has multiple measuring sensors including: horizontal vibration sensor B4_8, vertical vibration sensor B4_9, power sensor B4_11 and temperature sensor B4_10; signal processing circuit board A and signal processing circuit board B constitute a control module, which controls the coupling shaft adjuster 5 to produce an action through signal processing circuit board B, thereby changing the motor working mode of AC motor 6. The DC motor 4 uses multiple measurement sensors and speed and torque sensors 3 for intelligent sensing and monitoring. The collected data is then transmitted to the monitoring module, which monitors and acquires the experimental data of the DC motor 4 to obtain the experimental results. The DC motor 4 can operate in both motor and generator modes, and in each mode, the same multiple measurement sensors monitor the data, thereby improving the accuracy of the experimental results.
[0046] In one embodiment, the control flow of the coupling adjuster 5 includes: The signal processing circuit board B in junction box B4_7 monitors the operation control commands and experimental modes of the experimental motor set. If it is the squirrel-cage asynchronous motor mode, the signal processing circuit board B sends a control command to the linear motor of the coupling adjuster 5, generating a second action to control the coupling to reach the meshing position, stopping the action after the internal gear 6_4 and external gear 6_3 are fully meshed. If it is another motor mode (synchronous generator working mode or wound-rotor asynchronous motor working mode), it sends a control command to the linear motor, generating a first action to control the coupling to reach the disengagement position, stopping the action after the internal gear 6_4 and external gear 6_3 are fully disengaged.
[0047] In one embodiment, it also includes: The position detection unit is used to detect the real-time axial position of the coupling; The positioning confirmation unit is used to generate a confirmation signal when the coupling reaches the target working position; wherein the target working position includes the engagement position and the disengagement position; The control unit on signal processing circuit board B is communicatively connected to the position detection unit, the position confirmation unit, and the linear motor.
[0048] Furthermore, the control process of the control unit for the coupling adjuster 5 includes: receiving the motor working mode switching command of the AC motor 6 and determining the corresponding target working position; controlling the linear motor to drive the coupling to move towards the corresponding target working position; based on the real-time position of the coupling fed back by the position detection unit, determining whether the real-time position of the coupling and the corresponding target working position are within a first preset error range; if so, controlling the linear motor to stop and querying whether the position confirmation unit generates a confirmation signal; if the position confirmation unit generates a confirmation signal, the coupling reaches the target working position and locks this position; if the position confirmation unit does not generate a confirmation signal, it is considered that the position of the coupling is abnormal, and an abnormality handling command is executed.
[0049] If both the position detection unit and the position confirmation unit detect that the coupling has reached the target working position, it indicates that the coupling has moved into place and its position can be locked. If the results from the position detection unit and the position confirmation unit are inconsistent, it is determined that the position of the coupling is abnormal. At this time, the subsequent experimental process can be stopped, an abnormal alarm can be issued, or the linear motor can be controlled to return to the initial position and move again.
[0050] The position detection unit is an absolute encoder mounted on the lead screw of the linear motor, or a linear grating ruler integrated on the linear motor, used to detect the axial movement position of the output end of the linear motor; the position confirmation unit includes at least two non-contact proximity switches corresponding to the engagement position and disengagement position, respectively, used to sense the axial movement position of the coupling.
[0051] The position detection unit uses an absolute encoder or a linear encoder to directly measure the lead screw rotation angle of the linear motor or directly measure the axial displacement, thereby obtaining the position coordinates of the coupling during movement and providing high-precision and continuous position feedback. The positioning confirmation unit preferably uses a high-precision eddy current or capacitive proximity switch. When the trigger part on the coupling reaches the sensing area of the corresponding non-contact switch, the non-contact switch will output a high-level signal (confirmation signal) to indicate that the coupling has moved into position.
[0052] In the above technical solution, the position of the coupling can be accurately adjusted through the dual detection of the position detection unit and the position confirmation unit, which can prevent the internal gear 6_4 and the external gear 6_3 from being incompletely meshed or incompletely disengaged, further ensuring the accurate control of the motor working mode switching, improving the operational safety and the accuracy of the experimental results.
[0053] like Figure 10 As shown in the figure, the speed and torque sensor 3 is used to collect speed and torque signals. The acceleration sensors, including horizontal vibration sensor A6_13, vertical vibration sensor A6_14, horizontal vibration sensor B4_8, and vertical vibration sensor B4_9, are used to collect vibration signals from AC motor 6 and DC motor 4. The temperature sensors, including temperature sensor A6_16 and temperature sensor B4_10, are used to collect temperature signals from AC motor 6 and DC motor 4. The power sensors, including power sensor A6_15 and power sensor B4_11, are used to collect voltage, current, and phase signals from AC motor 6 and DC motor 4. The collected signals are then transmitted to the data acquisition modules on the corresponding signal processing circuit boards A and B, respectively. The central processing unit module calculates the average value of each signal, then fuses the parallel average values of various signals, converts them into serial signals, and outputs them through the serial bus interface.
[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0055] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0056] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the present invention, the present invention is not limited to the specific details and illustrations shown and described herein.
Claims
1. An integrated intelligent sensing experimental motor unit, characterized in that, include: A support platform (2) is provided with a speed and torque sensor (3), a DC motor (4), a coupling adjuster (5) and an AC motor (6) arranged in sequence; the DC motor (4) and the AC motor (6) are respectively provided with multiple measuring sensors; The coupling adjuster (5) is used to connect and lock the shaft B (4_5) of the DC motor (4) and the shaft A (6_5) of the AC motor (6), and is also used to switch the AC motor (6) to operate in different motor working modes. The control module is used to control the coupling adjuster (5) according to the required experimental mode, so as to switch the AC motor (6) to operate in the corresponding motor working mode; The monitoring module is connected to the speed and torque sensor (3) and multiple measurement sensors to monitor the DC motor (4) and the AC motor (6).
2. The integrated intelligent sensing experimental motor unit according to claim 1, characterized in that, The operating modes of the AC motor (6) include: synchronous generator operating mode, wound-rotor asynchronous motor operating mode and squirrel-cage asynchronous motor operating mode.
3. The integrated intelligent sensing experimental motor unit according to claim 1, characterized in that, When the DC motor (4) is in motor working mode, it drives the AC motor (6) as a prime mover. The control module controls the coupling adjuster (5) to produce the first action, so that the AC motor (6) runs in synchronous generator working mode, completing the synchronous generator experiment and the DC motor experiment at the same time.
4. The integrated intelligent sensing experimental motor unit according to claim 1, characterized in that, When the DC motor (4) is in generator mode, it serves as the load of the AC motor (6) to complete the experiment of the DC generator; The control module controls the coupling adjuster (5) to produce the first action, so that the AC motor (6) runs in the working mode of the wound-rotor asynchronous motor, and completes the experiment of the wound-rotor asynchronous motor; The control module controls the coupling adjuster (5) to produce a second action, so that the AC motor (6) runs in the squirrel-cage asynchronous motor working mode, and completes the experiment of the squirrel-cage asynchronous motor.
5. The integrated intelligent sensing experimental motor unit according to claim 2, characterized in that, The AC motor (6) includes, from the outside to the inside, a housing A (6_1), a bearing (6_2), a squirrel-cage rotor (6_8), a stator A (6_9), an inner rotor (6_10), and a rotating shaft A (6_5). The housing A (6_1) is mounted on the support platform (2) via a base A (6_6). An external gear (6_3) is provided inside the bearing (6_2). One side of the external gear (6_3) is connected to one end of the squirrel-cage rotor (6_8). An internal gear (6_4) is provided inside the external gear (6_3). The internal gear (6_4) is connected to the rotating shaft A (6_5). The rotating shaft A (6_5) is also provided with a first connecting slip ring (6_11) corresponding to the working mode of the wound-rotor asynchronous motor and a second connecting slip ring (6_12) corresponding to the working mode of the synchronous generator. The coupling adjuster (5) is used to engage the external gear (6_3) and the internal gear (6_4) or to disengage the external gear (6_3) and the internal gear (6_4).
6. The integrated intelligent sensing experimental motor unit according to claim 5, characterized in that, The stator A (6_9) includes: stator core A (6_9_1), with an outer winding (6_9_2) and an inner winding (6_9_3) on its outer and inner sides respectively. When the AC motor (6) is in the working mode of a squirrel-cage asynchronous motor, the outer winding (6_9_2) is energized to generate a rotating magnetic field, which drives the squirrel-cage rotor (6_8) to rotate. When the AC motor (6) is in the working mode of a wound-rotor asynchronous motor, the inner winding (6_9_3) is energized to generate a rotating magnetic field, which drives the inner rotor (6_10) to rotate. When the AC motor (6) is in synchronous generator working mode, the inner winding (6_9_3) is cut by the rotating magnetic field generated by the inner rotor (6_10) to produce a three-phase symmetrical AC output.
7. The integrated intelligent sensing experimental motor unit according to claim 6, characterized in that, The inner rotor (6_10) includes: a rotor core A (6_10_1), on which a wound-rotor asynchronous motor winding (6_10_2) and a synchronous generator excitation winding (6_10_3) are provided. The wound-rotor asynchronous motor winding (6_10_2) is distributed in the slots of the rotor core A (6_10_1) in a full-pitch star connection. When a three-phase symmetrical alternating current is applied, a circular rotating magnetic field will be generated. The synchronous generator excitation winding (6_10_3) is distributed in the slots of the rotor core A (6_10_1) in a concentrated winding form. When a direct current is applied, a spatially symmetrical magnetic field with four polarities will be generated.
8. The integrated intelligent sensing experimental motor unit according to claim 7, characterized in that, The base A (6_6) is equipped with a horizontal vibration sensor A (6_13), a vertical vibration sensor A (6_14) and a junction box A (6_7). The junction box A (6_7) is equipped with a power sensor A (6_15). The stator core A (6_9_1) is equipped with eight temperature sensors A (6_16). The terminals of the outer winding (6_9_2), inner winding (6_9_3), wound-rotor asynchronous motor winding (6_10_2), and synchronous generator excitation winding (6_10_3) are all led out to junction box A (6_7). Junction box A (6_7) has a built-in signal processing circuit board A, which receives input signals from horizontal vibration sensor A (6_13), vertical vibration sensor A (6_14), power sensor A (6_15), and temperature sensor A (6_16). After signal processing, the signals are output through a serial bus. The serial bus is led out through the guide rail groove on the support platform (2) and connected to the monitoring module.
9. The integrated intelligent sensing experimental motor unit according to claim 1, characterized in that, The DC motor (4) includes: a housing B (4_1), a stator B (4_2), a rotor B (4_3), a commutator (4_4), and a rotating shaft B (4_5) arranged sequentially from the outside to the inside. The housing B (4_1) is mounted on the support platform (2) via a base B (4_6). The commutator (4_4) is also provided with a brush B (4_12). The stator B (4_2) includes a stator core B and an excitation winding B disposed thereon, and the rotor B (4_3) includes a rotor core B and an armature winding disposed thereon.
10. The integrated intelligent sensing experimental motor unit according to claim 9, characterized in that, The base B (4_6) is equipped with a horizontal vibration sensor B (4_8), a vertical vibration sensor B (4_9), and a junction box B (4_7). The junction box B (4_7) is equipped with a power sensor B (4_11). The stator core B is equipped with multiple temperature sensors B (4_10). The excitation winding B and the armature winding are connected to the junction box B (4_7) and led out through the guide rail groove on the support platform (2). The junction box B (4_7) has a built-in signal processing circuit board B, which receives the input signals from the horizontal vibration sensor B (4_8), the vertical vibration sensor B (4_9), the power sensor B (4_11), and the temperature sensor B (4_10). After signal processing, the signals are output through the serial bus. The serial bus is led out through the guide rail groove. The signal processing circuit board B also outputs a control signal to the coupling adjuster (5) to control the coupling adjuster (5) to move axially.