Test system and test board of steering mechanism

Abstract

The invention discloses a testing system and a testing table for a steering mechanism. The testing system comprises an input shaft driving module, a load shaft driving module, a data acquisition module and a control module, the input shaft driving module is used for receiving the first control signal output by the control module and driving the steering mechanism to steer according to the first control signal; the load shaft driving module is used for receiving the second control signal output by the control module and providing a test load for the steering mechanism according to the second control signal; the data acquisition module is used for acquiring a data signal of the steering mechanism and outputting the data signal to the control module; the control module is used for judging the state of the steering mechanism according to the first control signal, the second control signal and the data signal. According to the technical scheme provided by the embodiment of the invention, the steering mechanism can be tested independently, steering testing can be carried out under various working conditions, the testing error is reduced, and the accuracy of the testing result is improved.

Description

Technical Field

[0001] This invention relates to the field of steering mechanism testing technology, and in particular to a steering mechanism testing system and test bench. Background Technology

[0002] With the rapid development of technology and modern life, vehicles play an important role in people's lives, and daily life is now inseparable from them. The steering mechanism, as one of the most important components of a vehicle, plays a crucial role, and its condition significantly impacts vehicle safety.

[0003] Testing and inspecting the steering mechanism is an essential step before a vehicle leaves the factory. However, most existing steering mechanism tests are conducted on the entire vehicle, requiring sophisticated testing facilities and personnel. Even when testing the steering mechanism separately using existing testing platforms, it's impossible to simulate different road conditions and driving scenarios, resulting in significant discrepancies between test results and actual usage. Furthermore, some existing vehicle models utilize steer-by-wire mechanisms, while current testing platforms can only test traditional electric power steering systems, making it impossible to test steer-by-wire mechanisms.

[0004] The existing testing systems for steering mechanisms have problems such as large errors in test results, serious deviations from actual use, and inability to test steer-by-wire mechanisms. These issues have become urgent technical problems to be solved in the industry. Summary of the Invention

[0005] This invention provides a testing system and test bench for steering mechanisms to solve the problems of large test error and inability to test steer-by-wire mechanisms in existing steering mechanism testing systems.

[0006] According to one aspect of the present invention, a testing system for a steering mechanism is provided, comprising: an input shaft drive module, a load shaft drive module, a data acquisition module, and a control module; The input shaft drive module is connected to the control module and the steering mechanism respectively, and is used to receive the first control signal output by the control module and drive the steering mechanism to steer according to the first control signal; The load shaft drive module is connected to the control module and the steering mechanism respectively, and is used to receive the second control signal output by the control module, and provide the test load to the steering mechanism according to the second control signal; The data acquisition module is connected to the steering mechanism and the control module respectively, and is used to acquire data signals from the steering mechanism and output the data signals to the control module. The control module is used to determine the state of the steering mechanism based on the first control signal, the second control signal, and the data signal.

[0007] Optionally, the input axis drive module includes an input axis servo driver and an input axis servo motor; The input axis servo driver is connected to the control module and is used to generate a drive signal based on the first control signal. The input shaft servo motor is connected to the input ends of the input shaft servo driver and the steering mechanism, respectively, and is used to drive the steering mechanism to steer according to the drive signal.

[0008] Optionally, the load shaft drive module includes a first load shaft drive unit and a second load shaft drive unit; the second control signal includes a second control signal A and a second control signal B. The first load shaft drive unit is connected to the control module and the first load end of the steering mechanism respectively, and is used to provide a first test load to the first load end of the steering mechanism according to the second control signal A. The second load shaft drive unit is connected to the control module and the second load end of the steering mechanism respectively, and is used to provide a second test load to the second load end of the steering mechanism according to the second control signal.

[0009] Optionally, the first load axis drive unit includes a first servo driver and a first servo motor; the second load axis drive unit includes a second servo driver and a second servo motor. The first servo driver is connected to the control module, and the first servo driver is used to generate a first test load drive signal according to the second control signal. The first servo motor is connected to the first servo driver and the first load end of the steering mechanism respectively, and is used to provide the first test load to the first load end of the steering mechanism according to the first test load drive signal; The second servo driver is connected to the control module, and the second servo driver is used to generate a second test load drive signal according to the second control signal. The second servo motor is connected to the second servo driver and the second load end of the steering mechanism respectively, and is used to provide the second test load to the second load end of the steering mechanism according to the second test load drive signal.

[0010] Optionally, the input shaft drive module further includes an input shaft reducer; The input shaft reducer is connected to the input ends of the input shaft servo motor and the steering mechanism, respectively.

[0011] Optionally, the first load shaft drive unit further includes a first reducer; the first reducer is connected to the first servo motor and the first load end of the steering mechanism respectively; The second load shaft drive unit further includes a second reducer; the second reducer is connected to the second load end of the second servo motor and the steering mechanism, respectively.

[0012] Optionally, the data acquisition module includes a torque sensor, a first tension sensor, and a second tension sensor; the data signals include a torque signal, a first load signal, and a second load signal. The torque sensor is connected to the input terminals of the control module and the steering mechanism, respectively, and is used to collect the torque signal of the steering mechanism and transmit the torque signal to the control module. The first tension sensor is connected to the control module and the first load end of the steering mechanism respectively, and is used to collect the first load signal of the steering mechanism and transmit the first load signal to the control module; The second tension sensor is connected to the control module and the second load end of the steering mechanism respectively, and is used to collect the second load signal of the steering mechanism and transmit the second load signal to the control module.

[0013] Optionally, the testing system for the steering mechanism may further include a display module; The display module is connected to the control module and is used to display the data signals acquired by the data acquisition module.

[0014] According to another aspect of the present invention, a test bench is provided, comprising a test system for the steering mechanism described in any of the above embodiments.

[0015] The technical solution of this invention involves a control module outputting a first control signal to an input shaft drive module, which then controls the steering mechanism to steer according to the first control signal. The control module also outputs a second control signal to a load shaft drive module, which provides a test load to the steering mechanism according to the second control signal. A data acquisition module collects data signals from the steering mechanism during testing, and the control module determines the state of the steering mechanism based on the data signals and the first control signal. This invention enables automated and intelligent testing of the steering mechanism independently. Furthermore, the input shaft drive module and the load shaft drive module can simulate steering tests under various working conditions, ensuring that the test results match the actual steering process. This improves the consistency of abnormal tests under different working conditions, increases the accuracy of test results, and reduces test errors. Simultaneously, it can also test steer-by-wire mechanisms, meeting a wider range of testing needs.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The following drawings are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a test system for a steering mechanism provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of a test system for another steering mechanism provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of an input shaft drive module provided in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a test system for another steering mechanism provided in an embodiment of the present invention; Figure 5 A schematic diagram of the structure of a test system for another steering mechanism provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the first load shaft drive unit provided in an embodiment of the present invention; Figure 7 A schematic diagram of the structure of a test system for another steering mechanism provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a test system for another steering mechanism provided in an embodiment of the present invention. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] Figure 1 This is a schematic diagram of a testing system for a steering mechanism provided in an embodiment of the present invention. See also... Figure 1 The testing system 100 for the steering mechanism includes: an input shaft drive module 10, a load shaft drive module 20, a data acquisition module 30, and a control module 40. The input shaft drive module 10 is connected to the control module 40 and the steering mechanism 200, respectively, and is used to receive a first control signal output by the control module 40 and drive the steering mechanism 200 to steer according to the first control signal. The load shaft drive module 20 is connected to the control module 40 and the steering mechanism 200, respectively, and is used to receive a second control signal output by the control module 40 and provide a test load to the steering mechanism 200 according to the second control signal. The data acquisition module 30 is connected to the steering mechanism 200 and the control module 40, respectively, and is used to acquire data signals from the steering mechanism 200 and output the data signals to the control module 40. The control module 40 is used to determine the state of the steering mechanism 200 based on the first control signal, the second control signal, and the data signals.

[0022] Specifically, the electric power steering mechanism, as one of the important components of a vehicle, mainly uses a controller to drive and control the power steering motor to amplify the steering input from the driver. To ensure the stability and safety of the steering mechanism under different operating conditions, it needs to undergo rigorous testing before the vehicle leaves the factory to determine whether its condition is normal. The steering mechanism testing system 100 provided in this embodiment of the invention can perform condition testing on the steering mechanism 200. The testing system 100 includes an input shaft drive module 10, a load shaft drive module 20, a data acquisition module 30, and a control module 40. The control module 40 can input a first control signal to the input shaft drive module 10 and a second control signal to the load shaft drive module 20. The first control signal may include signals such as speed and angle, and the second control signal may include signals such as load. The input shaft drive module 10 can control the steering mechanism 200 to simulate steering according to the first control signal. The load shaft drive module 20 can apply a test load to the steering mechanism 200 according to the second control signal to simulate road conditions in a real-world scenario. The input shaft drive module 10 and the load shaft drive module 20 are used to simulate the input torque and load of the steering mechanism 200, respectively, and can simulate the basic scenarios and road conditions of the steering mechanism 200 in actual use. The data acquisition module 30 is connected to the steering mechanism 200 and can collect various data of the steering mechanism 200 when the input shaft drive module 10 and the load shaft drive module simulate steering, and convert them into corresponding data signals and output them to the control module 40. Among them, the data acquisition module 30 can collect the actual torque signal of the steering mechanism 200 under the first control signal. The control module 40 can determine the state of the steering mechanism 200 based on the received data signals and the first control signal sent to the input shaft drive module 10.

[0023] The steering mechanism testing system provided in this invention provides a system where a control module outputs a first control signal to an input shaft drive module, which then controls the steering mechanism to steer according to the first control signal. The control module also outputs a second control signal to a load shaft drive module, which provides a test load to the steering mechanism according to the second control signal. A data acquisition module collects data signals from the steering mechanism during testing, and the control module determines the state of the steering mechanism based on the data signals and the first control signal. This invention enables automated and intelligent testing of steering mechanisms independently. Furthermore, the input shaft drive module and load shaft drive module can simulate steering tests under various working conditions, ensuring that the test results match the actual steering process. This improves the consistency and accuracy of abnormal tests under different working conditions, increases the precision of test results, and reduces test errors. Simultaneously, it can also test steer-by-wire mechanisms, meeting a wider range of testing needs.

[0024] Optional, Figure 2 This is a schematic diagram of the structure of a test system for another steering mechanism provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of an input shaft drive module provided in an embodiment of the present invention. Based on the above embodiments, see [link to other embodiments]. Figure 2 and Figure 3 The input shaft drive module 10 includes an input shaft servo driver 11 and an input shaft servo motor 12. The input shaft servo driver 11 is connected to the control module 40 and is used to generate a drive signal according to the first control signal. The input shaft servo motor 12 is connected to the input ends of the input shaft servo driver 11 and the steering mechanism 200 respectively, and is used to drive the steering mechanism 200 to steer according to the drive signal.

[0025] Specifically, the input shaft drive module 10 is mainly used to drive the steering mechanism 200 to steer, input torque signals to the steering mechanism 200, and simulate the steering wheel of a vehicle. This input shaft drive module 10 includes an input shaft servo driver 11 and an input shaft servo motor 12. The input shaft servo driver 11 converts the first control signal output by the control module 40 into a drive signal that the input shaft servo motor 12 can recognize. The input shaft servo motor 12 can rotate under the drive signal, thereby providing input torque to the steering mechanism 200 to simulate the steering torque during normal steering, i.e., the steering action of the vehicle's steering wheel.

[0026] Optionally, based on the above embodiments, see also... Figure 2 and Figure 3 The input shaft drive module 10 also includes an input shaft reducer 13; the input shaft reducer 13 is connected to the input ends of the input shaft servo motor 12 and the steering mechanism 200, respectively.

[0027] Specifically, the input shaft drive module 10 also includes an input shaft reducer 13. The input shaft reducer 13 is positioned between the input shaft servo motor 12 and the input shaft of the steering mechanism 200. Driven by the input shaft servo driver 11, the input shaft servo motor 12 generates high-speed, low-torque power, while the steering mechanism 200 requires low-speed, high-torque power similar to a steering wheel. By placing the input shaft reducer 13 after the input shaft servo driver 11 and the input shaft servo motor 12, the high-speed, low-torque torque generated by the input shaft servo motor 12 can be converted into a low-speed, high-torque torque suitable for the steering mechanism 200. The input shaft servo motor 12 can be a Kollmorgen AKM74 series motor, the input shaft servo driver 11 can be a Kollmorgen AKD series driver, and the input shaft reducer 13 can be an Alpha reducer.

[0028] Among them, such as Figure 3As shown, the input shaft drive module 10 may further include two couplings 14, two universal joints 15, and one telescopic tube 16. Both ends of the telescopic tube 16 are connected to the two universal joints 15 respectively. One universal joint 15 is connected to one of the couplings 14, the other universal joint 15 is connected to the input end of the steering mechanism 200, and the other coupling 14 is connected to the input shaft reducer 13. A data acquisition module 30 can be installed between the two couplings 14.

[0029] Optional, Figure 4 This is a schematic diagram of the structure of a test system for another steering mechanism provided in an embodiment of the present invention. Figure 5 This is a schematic diagram of the structure of a test system for another steering mechanism provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of the structure of the first load shaft drive unit provided in an embodiment of the present invention. Based on the above embodiments, see... Figures 4-6 The load shaft drive module 20 includes a first load shaft drive unit 21 and a second load shaft drive unit 22; the second control signal includes a second A control signal and a second B control signal; the first load shaft drive unit 21 is connected to the control module 40 and the first load end of the steering mechanism 200 respectively, and is used to provide a first test load to the first load end of the steering mechanism 200 according to the second A control signal; the second load shaft drive unit 22 is connected to the control module 40 and the second load end of the steering mechanism 200 respectively, and is used to provide a second test load to the second load end of the steering mechanism 200 according to the second B control signal.

[0030] Specifically, the load shaft drive module 20 is mainly used to provide a test load to the steering mechanism 200 to simulate the resistance encountered by the steering mechanism 200 during actual steering. The steering mechanism 200 generally connects two steering wheels. The load shaft drive module 20 may include a first load drive unit 21 and a second load drive unit 22. The first load drive unit 21 can provide a first test load to the first load end of the steering mechanism 200 according to a second control signal (let's call it "Second A"). The second load drive unit 22 can provide a second test load to the second load end of the steering mechanism 200 according to a second control signal (let's call it "Second B"). The first load end and the second load end can represent the two steering wheels in the steering mechanism 200. The first test load and the second test load may be the same or different.

[0031] Optionally, based on the above embodiments, see also... Figures 4-6The first load shaft drive unit 21 includes a first servo driver 211 and a first servo motor 212; the first servo driver 211 is connected to the control module 40 and is used to generate a first test load drive signal according to the second control signal; the first servo motor 212 is connected to the first servo driver 211 and the first load end of the steering mechanism 200 respectively, and is used to provide a first test load to the first load end of the steering mechanism 200 according to the first test load drive signal.

[0032] Specifically, the first load drive unit 21 can provide a first test load to the first load end of the steering mechanism 200 according to the second control signal A, simulating the resistance encountered by the steering mechanism 200 during actual steering. The first load drive unit 21 may include a first servo driver 211 and a first servo motor 212. The first servo driver 211 is mainly used to convert the second control signal A into a first test load drive signal that the first servo motor 212 can recognize. Then, the first servo motor 212 can rotate according to the first test load drive signal, providing the first test load to the first load end of the steering mechanism 200. The size of the first test load is not specifically limited in this embodiment of the invention and can be set according to actual needs.

[0033] The first load shaft drive unit 21 further includes a first reducer 213; the first reducer 213 is connected to both the first servo motor 212 and the first load end of the steering mechanism 200. The first servo motor 212 is mainly used to provide a first test load to the first load end of the steering mechanism 200. The first servo motor 212 mainly outputs a high-speed, low-torque torque, while the first load end of the steering mechanism 200 requires a torque that can simulate the resistance encountered by the steering mechanism 200 during steering. The first reducer 213 can convert the high-speed, low-torque torque output by the first servo motor 212 into a larger torque, and can also reduce the instantaneous impact of the steering mechanism 200 load end on the first servo motor 212, effectively protecting each mechanism and improving safety during the test. The first servo motor 212 can be a Kollmorgen AKM74 series motor, the first servo driver 211 can be a Kollmorgen AKD series driver, and the first reducer 213 can be an Alpha reducer. Figure 6 As shown, the first load shaft drive unit 21 may also be provided with a sliding ball 214, which is used to connect with the first load end of the steering mechanism 200.

[0034] Optionally, based on the above embodiments, see also... Figures 4-6The second load shaft drive unit 22 includes a second servo driver 221 and a second servo motor 222; the second servo driver 221 is connected to the control module 40 and is used to generate a second test load drive signal according to the second control signal; the second servo motor 222 is connected to the second servo driver 221 and the second load end of the steering mechanism 200 respectively, and is used to provide a second test load to the second load end of the steering mechanism 200 according to the second test load drive signal.

[0035] Specifically, the second load drive unit 22 can provide a second test load to the second load end of the steering mechanism 200 according to the second control signal B, simulating the resistance encountered by the steering mechanism 200 during actual steering. The second load drive unit 22 may include a second servo driver 221 and a second servo motor 222. The second servo driver 221 is mainly used to convert the second control signal B into a second test load drive signal that the second servo motor 222 can recognize. Then, the second servo motor 222 can rotate according to the second test load drive signal, providing a second test load to the second load end of the steering mechanism 200. The size of the second test load is not specifically limited in this embodiment of the invention and can be set according to actual needs. To ensure the accuracy of the test, multiple first test loads and second test loads can be set for testing to simulate road conditions under different scenarios, thereby reducing the deviation between simulation and actual steering. In some embodiments, the first test load and the second test load are the same when performing simulated steering tests. In other embodiments, the first test load and the second test load are different when performing simulated steering tests.

[0036] The second load shaft drive unit 22 further includes a second reducer 223; the second reducer 223 is connected to both the second servo motor 222 and the second load end of the steering mechanism 200. The second servo motor 222 is mainly used to provide a second test load to the second load end of the steering mechanism 200. The second servo motor 222 mainly outputs a high-speed, low-torque torque, while the second load end of the steering mechanism 200 needs to simulate the resistance encountered by the steering mechanism 200 during steering. The second reducer 223 can convert the high-speed, low-torque output of the second servo motor 222 into a larger torque, and can also reduce the instantaneous impact of the steering mechanism 200 load end on the second servo motor 222, improving safety during the test. The second servo motor 222 can be a Kollmorgen AKM74 series motor, the second servo driver 221 can be a Kollmorgen AKD series driver, and the second reducer 223 can be an Alpha reducer. The second load shaft drive unit 22 may also be equipped with a sliding ball, which is used to connect to the second load end of the steering mechanism 200.

[0037] Optional, Figure 7 A schematic diagram of a test system for a steering mechanism provided in an embodiment of the present invention. Based on the above embodiments, see... Figure 3 , Figure 6 and Figure 7 The data acquisition module 30 includes a torque sensor 31, a first tension sensor 32, and a second tension sensor 33. The data signals include a torque signal, a first load signal, and a second load signal. The torque sensor 31 is connected to the input terminals of the control module 40 and the steering mechanism 200, respectively, and is used to acquire the torque signal of the steering mechanism 200 and transmit the torque signal to the control module 40. The first tension sensor 32 is connected to the first load terminal of the control module 40 and the steering mechanism 200, respectively, and is used to acquire the first load signal of the steering mechanism 200 and transmit the first load signal to the control module 40. The second tension sensor 33 is connected to the second load terminal of the control module 40 and the steering mechanism 200, respectively, and is used to acquire the second load signal of the steering mechanism 200 and transmit the second load signal to the control module 40.

[0038] Specifically, the data acquisition module 30 is mainly used to collect various data signals from the steering mechanism 200 during simulation testing. The data acquisition module 30 may include multiple sensors for collecting various data signals from the steering mechanism 200 during simulation testing. Specifically, the data acquisition module 30 may include a torque sensor 31, a first tension sensor 32, and a second tension sensor 33. The torque sensor 31 is located between the input shaft reducer 13 and the input end of the steering mechanism 200, and is used to collect the actual torque of the steering mechanism 200 during simulation testing. Furthermore, the torque sensor 31 is also connected to the control module 40 to transmit the collected torque signal to the control module 40. The first tension sensor 32 is located between the first reducer 213 and the first load end of the steering mechanism 200, and is used to collect the actual load force at the first load end of the steering mechanism 200 during simulation testing and convert it into a corresponding first load signal. Furthermore, the first tension sensor 32 is also connected to the control module 40 to transmit the first load signal to the control module 40. The second tension sensor 33 is disposed between the second reducer 223 and the second load end of the steering mechanism 200. It is used to collect the actual load force at the second load end of the steering mechanism 200 during simulation testing and convert it into a corresponding second load signal. Furthermore, the second tension sensor 33 needs to be connected to the control module 40 to transmit the second load signal to the control module 40. After receiving the torque signal, the first load signal, and the second load signal, the control module 40 can determine the state of the steering mechanism 200 under the first and second load signals based on the torque signal, thus determining whether the steering mechanism is abnormal. Multiple simulation tests can be performed on the steering mechanism 200. If the steering mechanism 200 is in a normal state in all multiple simulation tests, then the steering mechanism 200 is determined to be normal. The data acquisition module 30 in this invention may also include other sensors. For example, the data acquisition module 30 may also include a voltage sensor, a current sensor, an angle sensor, a temperature sensor, etc., respectively used to acquire different data signals of the steering mechanism 200 during simulated steering tests to improve the accuracy of the test.

[0039] Optional, Figure 8 A schematic diagram of a test system for a steering mechanism provided in an embodiment of the present invention. Based on the above embodiments, see... Figure 8 The test system 100 for the steering mechanism also includes a display module 50; the display module 50 is connected to the control module 40 and is used to display the data signals acquired by the data acquisition module 30.

[0040] Specifically, the testing system 100 for the steering mechanism can also be equipped with a display module 50, which can be connected to the control module 40. The control module 40 can collect data signals from the steering mechanism 200 from the data acquisition module 30 and display the results of multiple simulated tests of the steering mechanism 200 on the display module 50 for operator review. The display module 50 can be a touchscreen, allowing operators to issue various commands. For example, the first control signal at the input end of the steering mechanism 200, the second control signal A at the first load end, and the second control signal B at the second load end can be adjusted through the display module, thereby enabling testing of the steering mechanism 200 under different operating conditions and visualization of the test results.

[0041] The steering mechanism testing system provided by this invention includes an input shaft drive module that simulates the steering wheel of the steering mechanism, and a first load drive unit and a second load drive unit that simulate the resistance of the steering mechanism during steering. It allows for individual testing of the steering mechanism, and each steering mechanism can undergo multiple simulation tests, improving the consistency and accuracy of abnormal tests under different operating conditions, increasing the accuracy of test results, and reducing test errors. Furthermore, this steering mechanism testing system can simulate steer-by-wire mechanisms, meeting a wider range of testing needs.

[0042] This invention also provides a test bench, which includes the testing system for the steering mechanism provided in any of the above embodiments. Since the test bench provided in this invention includes the testing system for the steering mechanism provided in this invention, it also has the same beneficial effects, and will not be described again here.

[0043] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A testing system for a steering mechanism, characterized in that, include: Input axis drive module, load axis drive module, data acquisition module, and control module; The input shaft drive module is connected to the control module and the steering mechanism respectively, and is used to receive the first control signal output by the control module and drive the steering mechanism to steer according to the first control signal; The load shaft drive module is connected to the control module and the steering mechanism respectively, and is used to receive the second control signal output by the control module, and provide the test load to the steering mechanism according to the second control signal; The data acquisition module is connected to the steering mechanism and the control module respectively, and is used to acquire data signals from the steering mechanism and output the data signals to the control module. The control module is used to determine the state of the steering mechanism based on the first control signal, the second control signal, and the data signal.

2. The testing system for the steering mechanism according to claim 1, characterized in that, The input axis drive module includes an input axis servo driver and an input axis servo motor; The input axis servo driver is connected to the control module and is used to generate a drive signal based on the first control signal. The input shaft servo motor is connected to the input ends of the input shaft servo driver and the steering mechanism, respectively, and is used to drive the steering mechanism to steer according to the drive signal.

3. The testing system for the steering mechanism according to claim 2, characterized in that, The load shaft drive module includes a first load shaft drive unit and a second load shaft drive unit; the second control signal includes a second A control signal and a second B control signal. The first load shaft drive unit is connected to the control module and the first load end of the steering mechanism respectively, and is used to provide a first test load to the first load end of the steering mechanism according to the second control signal A. The second load shaft drive unit is connected to the control module and the second load end of the steering mechanism respectively, and is used to provide a second test load to the second load end of the steering mechanism according to the second control signal.

4. The testing system for the steering mechanism according to claim 3, characterized in that, The first load axis drive unit includes a first servo driver and a first servo motor; the second load axis drive unit includes a second servo driver and a second servo motor. The first servo driver is connected to the control module, and the first servo driver is used to generate a first test load drive signal according to the second control signal. The first servo motor is connected to the first servo driver and the first load end of the steering mechanism respectively, and is used to provide the first test load to the first load end of the steering mechanism according to the first test load drive signal; The second servo driver is connected to the control module, and the second servo driver is used to generate a second test load drive signal according to the second control signal. The second servo motor is connected to the second servo driver and the second load end of the steering mechanism respectively, and is used to provide the second test load to the second load end of the steering mechanism according to the second test load drive signal.

5. The testing system for the steering mechanism according to claim 2, characterized in that, The input shaft drive module also includes an input shaft reducer; The input shaft reducer is connected to the input ends of the input shaft servo motor and the steering mechanism, respectively.

6. The testing system for the steering mechanism according to claim 4, characterized in that, The first load shaft drive unit further includes a first reducer; the first reducer is connected to the first load end of the first servo motor and the steering mechanism, respectively; The second load shaft drive unit further includes a second reducer; the second reducer is connected to the second load end of the second servo motor and the steering mechanism, respectively.

7. The testing system for the steering mechanism according to claim 6, characterized in that, The data acquisition module includes a torque sensor, a first tension sensor, and a second tension sensor; the data signals include a torque signal, a first load signal, and a second load signal. The torque sensor is connected to the input terminals of the control module and the steering mechanism, respectively, and is used to collect the torque signal of the steering mechanism and transmit the torque signal to the control module. The first tension sensor is connected to the control module and the first load end of the steering mechanism respectively, and is used to collect the first load signal of the steering mechanism and transmit the first load signal to the control module; The second tension sensor is connected to the control module and the second load end of the steering mechanism respectively, and is used to collect the second load signal of the steering mechanism and transmit the second load signal to the control module.

8. The testing system for the steering mechanism according to claim 1, characterized in that, It also includes a display module; The display module is connected to the control module and is used to display the data signals acquired by the data acquisition module.

9. A test stand, characterized in that, The test system includes the steering mechanism as described in any one of claims 1-8.

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