A performance simulation and testing device and method for dual redundant motors

Abstract

This invention relates to the field of motor performance testing equipment technology, and more particularly to a performance simulation and testing device and method for dual-redundant motors. The performance simulation and testing device for dual-redundant motors of this invention includes: a base, a mounting bracket, a vibration ring, a torque detection unit, and a connection socket. The connection socket is fixedly connected with a buckle and has a connection interface for electrical connection to the motor under test. The torque detection unit is connected to the rotor of the motor under test to detect the output torque of the motor. This invention uses radial and axial vibration motors on the vibration ring to generate vibrations that are transmitted to the mounting ring and the dual-redundant motor, simulating the vibration of a dual-redundant motor installed in a car during driving. By rotating the transmission rod, the position and angle of the vibration transmitted to the dual-redundant motor are changed, thereby improving the performance simulation testing effect of this invention.

Description

Technical Field

[0001] This invention relates to the field of motor performance testing equipment technology, and in particular to a performance simulation and testing device and method for dual redundant motors. Background Technology

[0002] The steering wheel control motor is a core component that ensures driving safety and must meet high safety standards. Therefore, dual redundant motors are often used as steering wheel control motors. The dual redundancy design improves motor reliability through dual hardware backup. Its performance simulation and testing equipment is the key to verifying the redundancy switching characteristics and fault-tolerant operation capabilities of the motor. It can realize motor operating condition simulation, parameter acquisition and fault verification, and provide performance support for motor mass production and vehicle installation.

[0003] Existing testing equipment mainly includes dynamometers, torque / position sensors, and data acquisition systems. The dynamometer is used to simulate steering loads, while the sensors and acquisition system are responsible for capturing key indicators such as redundancy switching time and torque fluctuations.

[0004] However, existing equipment has significant shortcomings in vibration-related testing for dual-redundant motors in real-vehicle equivalent testing: it cannot reproduce the multi-source superimposed vibration (road surface, powertrain, and steering system excitation superposition) and three-dimensional spatial vibration characteristics of real vehicles; the dynamic coordination simulation of vibration and steering load is lacking, making it difficult to match the coupled working conditions of real vehicle vibration and steering operation; at the same time, the testing equipment is prone to problems such as accuracy drift and insufficient anti-interference ability under vibration conditions, resulting in distorted measurement data under vibration conditions, making it impossible to accurately verify the reliability of dual-redundant motors in real vibration environments, restricting the effective guarantee of motor safety performance, and thus causing limitations.

[0005] Therefore, we propose a performance simulation and testing device and method for dual redundant motors. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a performance simulation and testing device and method for dual redundant motors, overcoming the deficiencies of existing technologies and aiming to solve the problems in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a performance simulation and testing device for dual-redundant motors, comprising:

[0008] The system comprises a control cabinet, a base, a mounting bracket, a vibration ring, a torque detection unit, and a connection socket. The torque detection unit and the connection socket are respectively mounted on two mounting brackets. A mounting seat is fixedly connected to the base. The vibration ring is mounted on the mounting seat, and a buffer spring connects the vibration ring and the mounting seat. A buckle is fixedly connected to the connection socket, and a connection interface is provided on the connection socket. The connection interface is electrically connected to the motor under test. The torque detection unit is connected to the rotor of the motor under test to detect the output torque of the motor under test.

[0009] The vibration ring is equipped with a superimposed vibration mechanism, which contacts the motor under test and transmits vibrations to simulate the environment of the motor under test when it is subjected to multiple superimposed vibrations.

[0010] Preferably, the superimposed vibration mechanism includes a radial vibration block, an axial vibration block, a mounting ring, and a clamping block. The radial vibration block is fixedly connected to the outer ring surface of the vibration ring, and a radial vibration motor is mounted on the radial vibration block. The axial vibration block is fixedly connected to the end face, and an axial vibration motor is fixedly connected to the axial vibration block. A polarization block is fixedly connected to the output ends of both the radial vibration motor and the axial vibration motor.

[0011] The mounting ring is located at the center of the vibration ring. Two transmission rods are connected between the mounting ring and the vibration ring. The two transmission rods are symmetrically arranged. The clamping block is slidably connected to the mounting ring. A clamping rod is rotatably connected to the mounting ring. The clamping rod is helically engaged with the clamping block.

[0012] Preferably, a magnetic coupler is connected to the torque detection unit, and the rotor of the motor under test is connected to the magnetic coupler.

[0013] Preferably, a first rotating ring is rotatably connected to the inner side of the vibration ring, and a second rotating ring is rotatably connected to the outer side of the mounting ring. The two ends of the transmission rod are respectively connected to the first rotating ring and the second rotating ring, and both the first rotating ring and the second rotating ring are fixed by bolts.

[0014] The vibrations generated by the radial and axial vibration motors on the vibration ring are transmitted to the mounting ring and the dual redundant motor, simulating the vibration of the dual redundant motor when it is installed on a car during driving. By rotating the transmission rod, the position and angle of the vibration transmitted to the dual redundant motor are changed, thereby improving the performance simulation test effect of the invention.

[0015] Preferably, a connecting block is fixedly connected to the transmission rod, a connecting groove is provided on the connecting block, a locking block is inserted into the connecting groove, an impact cylinder is fixedly connected to the locking block, an electromagnetic coil is fixedly connected inside the impact cylinder, an impact block is slidably connected inside the impact cylinder, an impact spring is connected between the impact block and the impact cylinder, and a locking block is also fixedly connected to the end of the impact cylinder away from the connecting block.

[0016] Preferably, the side of the transmission rod is also provided with a connecting groove.

[0017] By setting an impact cylinder on the transmission rod, the impact block inside the impact cylinder moves and impacts the inner wall of the impact cylinder, generating an impact force that is transmitted to the dual redundant motor. This simulates the performance of the dual redundant motor when it is installed in a car and subjected to an impact, thereby improving the performance testing effect of the present invention.

[0018] A performance simulation and testing method for dual-redundant motors, applicable to the aforementioned performance simulation and testing equipment for dual-redundant motors, comprises the following steps:

[0019] S1. Clamp the dual redundant motor laterally on the mounting ring, then connect the connection interface on the connector socket to the circuit of the dual redundant motor. The buckle on the connector socket holds the dual redundant motor in place, and the rotor of the dual redundant motor is connected to the magnetic coupler of the torque detection unit.

[0020] S2. Current is supplied to the dual redundant motor through the control cabinet, and the different power systems of the dual redundant motor are switched through the program. The radial vibration motor and axial vibration motor on the vibration ring generate vibration and transmit it to the dual redundant motor through the transmission rod. Rotating the transmission rod changes the position and angle of the vibration transmitted to the dual redundant motor.

[0021] S3. The impact block inside the impact cylinder impacts the inner wall of the impact cylinder under the action of the electromagnetic coil and the impact spring, generating an impact force that is transmitted to the dual redundant motor, thus detecting the stability of the dual redundant motor when the car is impacted.

[0022] The beneficial effects of this invention are:

[0023] 1. This invention generates vibrations through radial and axial vibration motors on a vibration ring, which are then transmitted to the mounting ring and dual redundant motors. This simulates the vibrations of the dual redundant motors when they are installed on a car during driving. By rotating the transmission rod, the position and angle of the vibration transmitted to the dual redundant motors are changed, thereby improving the performance simulation test effect of this invention.

[0024] 2. This invention improves the performance testing effect of the invention by setting an impact cylinder on the transmission rod, and by having the impact block inside the impact cylinder move and strike the inner wall of the impact cylinder, generating an impact force and transmitting it to the dual redundant motor. This simulates the performance of the dual redundant motor when it is installed in a car and subjected to an impact. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a performance simulation and testing device for a dual-redundant motor according to Embodiment 1 of the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic diagram of the structure of the vibration ring, mounting ring, and transmission rod in Embodiment 2 of the present invention;

[0028] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0029] Figure 5 This is a cross-sectional view of the impact cylinder, impact block, and electromagnetic coil in this invention.

[0030] In the diagram: 1. Base; 11. Mounting bracket; 12. Vibration ring; 13. Torque detection unit; 14. Connecting socket; 15. Mounting seat; 16. Buffer spring; 17. Buckle; 21. Radial vibration block; 22. Axial vibration block; 23. Mounting ring; 24. Clamping block; 25. Radial vibration motor; 26. Axial vibration motor; 27. Transmission rod; 28. Clamping rod; 3. Magnetic coupler; 4. Rotating ring No. 1; 41. Rotating ring No. 2; 5. Connecting block; 51. Connecting groove; 52. Engaging block; 53. Impact cylinder; 54. Electromagnetic coil; 55. Impact block; 56. Impact spring. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1: Refer to the appendix of the instruction manual. Figure 1 and Figure 2 A performance simulation and testing device for dual redundant motors, comprising:

[0033] The system includes a control cabinet, a base 1, a mounting bracket 11, a vibration ring 12, a torque detection unit 13, and a connection socket 14. The torque detection unit 13 and the connection socket 14 are respectively mounted on two mounting brackets 11. A mounting base 15 is fixedly connected to the base 1. The vibration ring 12 is mounted on the mounting base 15. A buffer spring 16 is connected between the vibration ring 12 and the mounting base 15. A buckle 17 is fixedly connected to the connection socket 14. The connection socket 14 is provided with a connection interface, which is connected to the motor under test. The torque detection unit 13 is connected to the rotor of the motor under test to detect the output torque of the motor under test.

[0034] The vibration ring 12 is equipped with a superimposed vibration mechanism. The superimposed vibration mechanism contacts the motor under test and transmits vibration to simulate the environment of the motor under test when it is subjected to multiple superimposed vibrations.

[0035] In this invention, the superimposed vibration mechanism includes a radial vibration block 21, an axial vibration block 22, a mounting ring 23, and a clamping block 24. The radial vibration block 21 is fixedly connected to the outer ring surface of the vibration ring 12, and a radial vibration motor 25 is mounted on the radial vibration block 21. The axial vibration block 22 is fixedly connected to the end face, and an axial vibration motor 26 is fixedly connected to the axial vibration block 22. Polarizing blocks are fixedly connected to the output ends of both the radial vibration motor 25 and the axial vibration motor 26.

[0036] The mounting ring 23 is located at the center of the vibration ring 12. Two transmission rods 27 are connected between the mounting ring 23 and the vibration ring 12. The two transmission rods 27 are symmetrically arranged. The clamping block 24 is slidably connected to the mounting ring 23. A clamping rod 28 is rotatably connected to the mounting ring 23. The clamping rod 28 and the clamping block 24 are screwed together.

[0037] In this invention, a magnetic coupler 3 is connected to the torque detection unit 13, and the rotor of the motor under test is connected to the magnetic coupler 3.

[0038] In this invention, a first rotating ring 4 is rotatably connected to the inner side of the vibration ring 12, and a second rotating ring 41 is rotatably connected to the outer side of the mounting ring 23. The two ends of the transmission rod 27 are respectively connected to the first rotating ring 4 and the second rotating ring 41, and the first rotating ring 4 and the second rotating ring 41 are fixed by bolts.

[0039] In this invention, the dual redundant motor is placed inside the mounting ring 23, and then the clamping rod 28 is rotated so that the clamping rod 28 pushes the clamping block 24, thereby clamping the dual redundant motor. The part of the clamping block 24 that contacts the dual redundant motor can be provided with flexible rubber to increase the clamping effect. The connecting socket 14 is moved towards the direction of the dual redundant motor, so that the connecting interface inside the connecting socket 14 is connected to the circuit interface on the dual redundant motor. The buckle 17 on the connecting socket 14 is put on the outside of the dual redundant motor and screwed on with bolts, so that the buckle 17 and the connecting socket 14 are fixed on the dual redundant motor. The connecting interface inside the connecting socket 14 is connected to the control cabinet through a flexible line, so that when the dual redundant motor vibrates, the connecting socket 14 can be firmly fixed on the dual redundant motor under the action of the buckle 17.

[0040] Then, the magnetic coupler 3 on the torque detection unit 13 is connected to the rotor of the dual redundant motor. The magnetic coupler 3 is driven by magnetic force, which can separate the dual redundant motor and the torque detection unit 13. Therefore, when the dual redundant motor vibrates, the vibration will not be transmitted to the torque detection unit 13, thus not affecting the detection effect of the torque detection unit 13.

[0041] In this invention, the dual redundant motor is horizontally mounted on the mounting ring 23, with the same mounting orientation as when the steering wheel motor is mounted on a car. The control cabinet is connected to the dual redundant motor circuit through flexible lines and connection interfaces to control the rotation of the dual redundant motor. The program controls the switching between two different power systems of the dual redundant motor to detect the performance of the dual redundant motor. The torque detection unit 13 detects the output torque of the dual redundant motor. At the same time, the radial vibration motor 25 and the axial vibration motor 26 on the radial vibration block 21 and the axial vibration block 22 drive the polarization block to rotate, thereby generating vibration that is transmitted to the vibration ring 12. The vibration ring 12 then transmits the vibration to the mounting ring 23 and the dual redundant motor through the transmission rod 27, simulating the vibration experienced by the dual redundant motor during the driving process of a car.

[0042] In this invention, by rotating the first rotating ring 4, the transmission rod 27 and the second rotating ring 41, the angle of the transmission rod 27 is changed, thereby changing the angle at which the lateral and longitudinal vibrations generated by the radial vibration motor 25 and the axial vibration motor 26 on the vibration ring 12 are transmitted to the dual redundant motor. Thus, this invention can transmit vibrations from different positions of the dual redundant motor.

[0043] The present invention generates vibrations through the radial vibration motor 25 and the axial vibration motor 26 on the vibration ring 12, which are transmitted to the mounting ring 23 and the dual redundant motor to simulate the vibration of the dual redundant motor installed on a car during driving. By rotating the transmission rod 27, the position and angle of the vibration transmitted to the dual redundant motor are changed, thereby improving the performance simulation test effect of the present invention.

[0044] Example 2: Based on Example 1, refer to the appendix of the instruction manual. Figures 1-5 In this invention, a connecting block 5 is fixedly connected to the transmission rod 27. A connecting groove 51 is provided on the connecting block 5. A locking block 52 is inserted into the connecting groove 51. An impact cylinder 53 is fixedly connected to the locking block 52. An electromagnetic coil 54 is fixedly connected inside the impact cylinder 53. An impact block 55 is slidably connected inside the impact cylinder 53. An impact spring 56 is connected between the impact block 55 and the impact cylinder 53. A locking block 52 is also fixedly connected to the end of the impact cylinder 53 away from the connecting block 5.

[0045] In this invention, the side of the transmission rod 27 is also provided with a connecting groove 51.

[0046] In this invention, while vibration is generated on the vibrating ring 12 and transmitted to the dual redundant motor, current is passed through the electromagnetic coil 54 inside the impact cylinder 53 on the connecting block 5. The electromagnetic coil 54 generates magnetic force, attracting the metal impact block 55, causing the impact block 55 to compress the impact spring 56. Then, current is passed into the electromagnetic coil 54 in the opposite direction, so the impact block 55 moves under the combined action of the electromagnetic coil 54 and the impact spring 56, impacting the inner wall of the impact cylinder 53. The impact force generated is transmitted to the dual redundant motor through the connecting block 5, the transmission rod 27 and the mounting ring 23, thereby simulating the scenario when the dual redundant motor is installed on a vehicle and is hit during driving. This expands the test scope of this invention. By changing the angle of the transmission rod 27, the angle at which the impact is transmitted to the dual redundant motor can be adjusted, simulating the situation when the dual redundant motor is subjected to impact force at different angles in the circumferential direction.

[0047] In this invention, a connecting groove 51 is provided on the side of the transmission rod 27, and the groove opening of the connecting groove 51 faces the same direction as the axis of the dual redundant motor. Therefore, by loosening the bolts on the connecting block 5, the locking block 52 and the impact cylinder 53 can be removed. Then, the locking block 52 is inserted laterally into the connecting groove 51 on the transmission rod 27 and the bolts are tightened to fix it, so that the impact force generated in the impact cylinder 53 is axially transmitted to the dual redundant motor, thereby simulating the situation where the impact force is axially transmitted to the dual redundant motor.

[0048] In this invention, both ends of the impact cylinder 53 are provided with locking blocks 52, and both ends of the impact cylinder 53 can be installed on the connecting block 5. Therefore, when installing the impact cylinder 53, the direction of the impact can be changed so that the impact generated by the impact cylinder 53 on the two symmetrical transmission rods 27 is in the same direction. This is then combined with adjusting the current of the electromagnetic coil 54 to increase the impact force of the impact cylinder 53.

[0049] The present invention provides an impact cylinder 53 on the transmission rod 27. The impact block 55 inside the impact cylinder 53 moves and impacts the inner wall of the impact cylinder 53, generating an impact force that is transmitted to the dual redundant motor. This simulates the performance of the dual redundant motor when it is installed in a car and subjected to an impact, thereby improving the performance testing effect of the present invention.

[0050] Example 3: A performance simulation and testing method for dual-redundant motors. This method is applicable to the aforementioned performance simulation and testing equipment for dual-redundant motors. The steps of this method are as follows:

[0051] S1. The dual redundant motor is horizontally clamped on the mounting ring 23, and then the connection interface on the connection socket 14 is connected to the circuit of the dual redundant motor. The buckle 17 on the connection socket 14 holds the dual redundant motor, and the rotor of the dual redundant motor is connected to the magnetic coupler 3 of the torque detection unit 13.

[0052] S2. Current is supplied to the dual redundant motor through the control cabinet, and the different power systems of the dual redundant motor are switched through the program. The radial vibration motor 25 and the axial vibration motor 26 on the vibration ring 12 generate vibration and transmit it to the dual redundant motor through the transmission rod 27. Rotating the transmission rod 27 changes the position and angle of the vibration transmitted to the dual redundant motor.

[0053] S3. The impact block 55 inside the impact cylinder 53 impacts the inner wall of the impact cylinder 53 under the action of the electromagnetic coil 54 and the impact spring 56, generating an impact force and transmitting it to the dual redundant motor to detect the stability of the dual redundant motor when the car is impacted.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A performance simulation and testing device for dual redundant motors, characterized in that: include: The control cabinet, base (1), mounting bracket (11), vibration ring (12), torque detection unit (13) and connection socket (14) are respectively mounted on two mounting brackets (11). A mounting seat (15) is fixedly connected to the base (1). The vibration ring (12) is mounted on the mounting seat (15). A buffer spring (16) is connected between the vibration ring (12) and the mounting seat (15). A buckle (17) is fixedly connected to the connection socket (14). A connection interface is provided on the connection socket (14). The connection interface is connected to the motor under test. The torque detection unit (13) is connected to the rotor of the motor under test to detect the output torque of the motor under test. The vibration ring (12) is provided with a superimposed vibration mechanism. The superimposed vibration mechanism contacts the motor under test and transmits vibration to simulate the environment of the motor under test when it is subjected to multiple superimposed vibrations. The superimposed vibration mechanism includes a radial vibration block (21), an axial vibration block (22), a mounting ring (23), and a clamping block (24). The radial vibration block (21) is fixedly connected to the outer ring surface of the vibration ring (12), and a radial vibration motor (25) is mounted on the radial vibration block (21). The axial vibration block (22) is fixedly connected to the end face, and an axial vibration motor (26) is fixedly connected to the axial vibration block (22). Polarizing blocks are fixedly connected to the output ends of both the radial vibration motor (25) and the axial vibration motor (26). The mounting ring (23) is located at the center of the vibration ring (12). Two transmission rods (27) are connected between the mounting ring (23) and the vibration ring (12). The two transmission rods (27) are symmetrically arranged. The clamping block (24) is slidably connected to the mounting ring (23). A clamping rod (28) is rotatably connected to the mounting ring (23). The clamping rod (28) and the clamping block (24) are screw-fitted. A magnetic coupler (3) is connected to the torque detection unit (13), and the rotor of the motor under test is connected to the magnetic coupler (3); A connecting block (5) is fixedly connected to the transmission rod (27). A connecting groove (51) is provided on the connecting block (5). A locking block (52) is inserted into the connecting groove (51). An impact cylinder (53) is fixedly connected to the locking block (52). An electromagnetic coil (54) is fixedly connected inside the impact cylinder (53). An impact block (55) is slidably connected inside the impact cylinder (53). An impact spring (56) is connected between the impact block (55) and the impact cylinder (53). A locking block (52) is also fixedly connected to the end of the impact cylinder (53) away from the connecting block (5).

2. The performance simulation and testing equipment for dual redundant motors according to claim 1, characterized in that: The inner side of the vibration ring (12) is rotatably connected to a first rotating ring (4), and the outer side of the mounting ring (23) is rotatably connected to a second rotating ring (41). The two ends of the transmission rod (27) are respectively connected to the first rotating ring (4) and the second rotating ring (41). The first rotating ring (4) and the second rotating ring (41) are both fixed by bolts.

3. The performance simulation and testing equipment for dual redundant motors according to claim 2, characterized in that: The side of the transmission rod (27) is also provided with a connecting groove (51).

4. A method for using a performance simulation and testing device for a dual-redundant motor, the method being applicable to the performance simulation and testing device for a dual-redundant motor as described in any one of claims 1-3, characterized in that: The steps of this method are as follows: S1. The dual redundant motor is horizontally clamped on the mounting ring (23), and the connection interface on the connection socket (14) is connected to the circuit of the dual redundant motor. The buckle (17) on the connection socket (14) holds the dual redundant motor, and the rotor of the dual redundant motor is connected to the magnetic coupler (3) of the torque detection unit (13). S2. Current is supplied to the dual redundant motor through the control cabinet, and the different power systems of the dual redundant motor are switched through the program. The radial vibration motor (25) and axial vibration motor (26) on the vibration ring (12) generate vibration and transmit it to the dual redundant motor through the transmission rod (27). Rotating the transmission rod (27) changes the position and angle of the vibration transmitted to the dual redundant motor. S3. The impact block (55) inside the impact cylinder (53) impacts the inner wall of the impact cylinder (53) under the action of the electromagnetic coil (54) and the impact spring (56), generating an impact force and transmitting it to the dual redundant motor to detect the stability of the dual redundant motor when the car is impacted.

Images