CN219935293U - EPS testing arrangement - Google Patents

Abstract

The utility model discloses an EPS test device. The EPS test device comprises an upper computer, wherein the upper computer comprises an upper computer body and an HIL simulation system which is in communication connection with the upper computer body, and the HIL simulation system can store a whole vehicle simulation model; a driver simulation assembly including pedals, steering wheel, and seat; the test shaft assembly comprises a test shaft body connected with the steering wheel and a test motor for driving the test shaft body to rotate, and the EPS assembly to be tested is arranged on the test shaft body; the automatic driving simulation assembly comprises a steering wheel connecting piece and a driving simulation motor, wherein the steering wheel connecting piece is used for being detachably connected with a steering wheel, the driving simulation motor is used for driving the steering wheel to rotate, and the driving simulation motor is in communication connection with the HIL simulation system; and a detection assembly. The EPS test device can switch the actual vehicle simulation test and the automatic driving simulation test of the driver, reduce errors caused by over idealization of the whole vehicle simulation model, enable the EPS power-assisted steering function evaluation result to be more real and reliable, and improve the test quality.

Description

EPS testing arrangement

Technical Field

The utility model relates to the technical field of EPS test, in particular to an EPS test device.

Background

EPS (Electronic Power Steering, abbreviated as electronic power steering system) utilizes power generated by a motor to assist a driver in power steering, and provides steering power with different magnitudes according to different vehicle speeds, so that steering force during parking and low-speed running is reduced, and steering characteristics and active safety performance during high-speed running are improved; EPS is generally composed of a torque (steering) sensor, an electronic control unit, an electric motor, a decelerator, a mechanical steering gear, and a battery power source.

At present, the good EPS system can enable the response of the steering system to be quicker, and provides possibility for designing the power-assisted steering system with excellent performance, so that the development and the test of the EPS function are more and more important; the existing EPS test mainly comprises a motor direct test, the EPS test for combining the steering operation of a driver and the motor is less, the gap between the EPS test and the actual application scene is larger, the reproduction degree and the precision of test data are lower, and the reliability of the EPS power-assisted steering function evaluation is reduced.

Therefore, how to improve the reliability of the EPS power steering function evaluation is a technical problem that a person skilled in the art needs to solve at present.

Disclosure of Invention

In view of the above, the present utility model is directed to an EPS test device for improving reliability of EPS power steering function evaluation.

In order to achieve the above object, the present utility model provides the following technical solutions:

an EPS test apparatus, comprising:

the upper computer comprises an upper computer body and an HIL simulation system which is in communication connection with the upper computer body, and the HIL simulation system can store a whole vehicle simulation model;

a driver simulation assembly including pedals, steering wheel, and seat;

the test shaft assembly comprises a test shaft body connected with the steering wheel and a test motor used for driving the test shaft body to rotate, and the EPS assembly to be tested is arranged on the test shaft body;

the automatic driving simulation assembly comprises a steering wheel connecting piece and a driving simulation motor, wherein the steering wheel connecting piece is used for being detachably connected with the steering wheel, the driving simulation motor is used for driving the steering wheel to rotate, and the driving simulation motor is in communication connection with the HIL simulation system; and

the detection assembly comprises a driver simulation detection piece and an automatic driving simulation detection piece, wherein the driver simulation detection piece is used for detecting real vehicle gestures and simulation data of a driver in real vehicle simulation, the automatic driving simulation detection piece is used for detecting real vehicle gestures and simulation data of an automatic driving simulation, and the driver simulation detection piece and the automatic driving simulation detection piece are both in communication connection with the HIL simulation system.

Optionally, in the EPS test device described above, the autopilot simulation component is disposed on a position adjustment structure;

the automatic driving simulation structure comprises a support mounting plate, a bearing mounting plate and a first screw nut assembly arranged between the support mounting plate and the bearing mounting plate, wherein the support mounting plate is used for supporting the automatic driving simulation structure, the bearing mounting plate is rotatably arranged on a support frame, a first sliding connecting piece is arranged on the bearing mounting plate, and a first sliding matching piece which is in sliding fit with the sliding connecting piece is arranged at the bottom of the support mounting plate.

Optionally, in the EPS test device described above, the seat and the position adjustment structure are slidably disposed on a linear sliding table through a second sliding connector, and a driving motor and a second lead screw nut assembly connected to an output shaft of the driving motor are disposed on the linear sliding table, and a nut of the second lead screw nut assembly is connected to the seat and the position adjustment structure.

Optionally, in the EPS test device described above, the test shaft assembly further includes a decelerator and a connection switching member, and the driver simulation detecting member includes a driving torque sensor;

the speed reducer is connected with an output shaft of the test motor through a shaft sleeve, the EPS component to be tested is mounted on the test shaft body through a connection switching piece, and the driving torque sensor is mounted on the test shaft body.

Optionally, in the EPS test device, the autopilot simulation assembly further includes a drive simulation shaft and a magnetic powder clutch disposed on the drive simulation shaft, and the magnetic powder clutch is in communication connection with the upper computer body.

Optionally, in the EPS test device, the automatic driving simulation detecting element includes a driving simulation torque sensor, and the driving simulation torque sensor is disposed on the driving simulation shaft.

Optionally, in the EPS test device described above, the test shaft assembly is disposed on a test platform, and a platform supporting device is disposed at a bottom of the test platform, and the platform supporting device includes four platform adjusting structures distributed in a rectangular array;

the platform adjusting structure comprises a connecting lug plate and a lifting assembly, wherein the connecting lug plate is rotationally connected to the lifting assembly, and the lifting assembly is used for enabling the connecting lug plate to do lifting motion.

Optionally, in the EPS test device, the lifting component is provided with a synchronous adjusting component, the synchronous adjusting component includes a limiting block and a concentric shaft, the limiting block is provided with a limiting hole, and the concentric shaft penetrates through the limiting holes on two adjacent limiting blocks.

Optionally, in the EPS test device, the driver simulation assembly further includes a switch mount, and an emergency stop switch, a gear switch, and an ignition switch are disposed on the switch mount.

Optionally, in the EPS test device described above, the portable display further includes a dummy display and a display support structure;

the simulation display is arranged on the display supporting structure and is electrically connected with the HIL simulation system, and braking casters are arranged at the bottom of the display supporting structure.

When the EPS test device provided by the utility model is used, as the driver simulation assembly comprises the pedal, the steering wheel and the seat, the test shaft body of the test shaft assembly is connected with the steering wheel, and the test motor is used for driving the test shaft body to rotate, so that a driver can directly sit on the seat, and can perform the driver real vehicle simulation by stepping on the pedal and rotating the steering wheel, and meanwhile, the driver simulation detection piece is used for detecting the real vehicle posture and simulation data of the driver in real vehicle simulation and is in communication connection with the HIL simulation system, so that the driver simulation detection piece is used for detecting the real vehicle posture and simulation data of the driver in real vehicle simulation, and the driving experience evaluation is performed on the real vehicle posture and the simulation data of the driver in real vehicle simulation, namely, the driver real vehicle simulation evaluation is completed; in addition, after the steering wheel is detachably connected with the steering wheel connecting piece of the automatic driving simulation assembly, the steering wheel is connected with the automatic driving simulation assembly, the steering wheel connecting piece can be controlled to rotate through driving of the driving simulation motor of the automatic driving simulation assembly, so that the steering wheel can rotate, based on communication connection between the upper computer body and the HIL simulation machine, the HIL simulation machine can be controlled to input a simulation driving signal to the driving simulation motor of the automatic driving simulation assembly through the upper computer body, the driving simulation motor is enabled to control the steering wheel connecting piece to rotate, so that the steering wheel rotates, meanwhile, based on the fact that the automatic driving simulation detecting piece is used for detecting the real vehicle posture and simulation data in the automatic driving simulation, the automatic driving simulation detecting piece is in communication connection with the HIL simulation system, therefore the fact that the automatic driving simulation is detected through the automatic driving simulation detecting piece is enabled, the real vehicle posture and the simulation data in the automatic driving simulation is transmitted to the HIL simulation system, and the HIL closed loop test verification is completed.

Therefore, the EPS test device provided by the utility model can switch the actual vehicle simulation test and the automatic driving simulation test of a driver, and can effectively reduce errors caused by over idealization of a whole vehicle simulation model by comparing test results obtained by the two test modes, reduce the gap between the test results and actual application scenes, improve the reproduction degree and precision of test data, meet the test and evaluation of test personnel on the EPS power steering function, ensure that the evaluation result of the EPS power steering function is more real and reliable, and improve the test quality.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram illustrating transmission of internal control signals of an EPS test device according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of an EPS test apparatus according to an embodiment of the present utility model;

FIG. 3 is a schematic structural view of a test shaft assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of an autopilot simulation assembly according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a position adjustment structure according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram of a platform adjusting structure according to an embodiment of the present utility model.

The device comprises a driver simulation component 100, a pedal 101, a steering wheel 102, a seat 103, a test shaft component 200, a test shaft body 201, a test motor 202, a speed reducer 203, an EPS component 204 to be tested, a driving torque sensor 205, an automatic driving simulation component 300, a steering wheel connecting piece 301, a driving simulation motor 302, a driving simulation shaft 302, a magnetic powder clutch 304, a driving simulation torque sensor 305, a position adjusting structure 400, a supporting mounting plate 401, a bearing mounting plate 402, a first screw nut component 403, a first sliding connecting piece 404, a first sliding matching piece 405, a linear sliding table 500, a test platform 600, a platform adjusting structure 701, a connecting lug plate 702, a lifting component 704, a synchronous adjusting component 703, a first mounting plate 705, a second mounting plate 800, a switch mounting table 900 and a movable display 900.

Detailed Description

In view of the above, the core of the present utility model is to provide an EPS test device to improve reliability of EPS power steering function evaluation.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 6, an embodiment of the present utility model discloses an EPS test apparatus, which includes an upper computer, a driver simulation module 100, a test shaft module 200, an autopilot simulation module 300, and a detection module.

The upper computer comprises an upper computer body and an HIL simulation system which is in communication connection with the upper computer body, and the HIL simulation system can store a whole vehicle simulation model; the driver simulation assembly 100 includes a pedal 101, a steering wheel 102, and a seat 103; the test shaft assembly 200 comprises a test shaft body 201 connected with the steering wheel 102 and a test motor 202 for driving the test shaft body 201 to rotate, and an EPS assembly 204 to be tested is arranged on the test shaft body 201; the autopilot simulation assembly 300 includes a steering wheel coupler 301 for detachable connection with the steering wheel 102 and a steering simulation motor 302 for driving the steering wheel 102 to rotate, the steering simulation motor 302 being communicatively coupled to the HIL simulation system; the detection assembly comprises a driver simulation detection piece and an automatic driving simulation detection piece, wherein the driver simulation detection piece is used for detecting real vehicle posture and simulation data of a driver in real vehicle simulation, the automatic driving simulation detection piece is used for detecting the real vehicle posture and the simulation data of the automatic driving simulation, and the driver simulation detection piece and the automatic driving simulation detection piece are both in communication connection with the HIL simulation system.

When the EPS test device provided by the utility model is used, as the driver simulation assembly 100 comprises the pedal 101, the steering wheel 102 and the seat 103, the test shaft body 201 of the test shaft assembly 200 is connected with the steering wheel 102, and the test motor 202 is used for driving the test shaft body 201 to rotate, so that a driver can directly sit on the seat 103, the driver can perform the driver real vehicle simulation by stepping on the pedal 101 and rotating the steering wheel, and meanwhile, the driver simulation detection piece is used for detecting the real vehicle posture and simulation data when the driver is in real vehicle simulation and is in communication connection with the HIL simulation system, so that the driver simulation detection piece is used for detecting the real vehicle posture and the simulation data when the driver is in real vehicle simulation, and the driver real vehicle posture and the simulation data are subjected to driving experience evaluation, namely the driver real vehicle simulation evaluation is completed; in addition, after the steering wheel 102 is detachably connected with the steering wheel connector 301 of the autopilot simulation assembly 300, the steering wheel 102 is connected with the autopilot simulation assembly 300, the steering wheel connector 301 can be controlled to rotate by driving of the autopilot simulation motor 302, so that the steering wheel 102 rotates, the HIL simulation machine can be controlled to input a simulated driving signal to the driving simulation motor 302 of the autopilot simulation assembly 300 by the upper computer based on communication connection between the upper computer body and the HIL simulation machine, the steering simulation motor 302 is controlled to rotate the steering wheel connector 301, so that the steering wheel 102 rotates, and meanwhile, the autopilot simulation detector is in communication connection with the HIL simulation system based on the autopilot simulation detector for detecting real vehicle posture and simulation data in autopilot simulation, and the real vehicle posture and simulation data in autopilot simulation are transmitted to the HIL simulation system to complete closed loop test verification.

Therefore, the EPS test device provided by the utility model can switch the actual vehicle simulation test and the automatic driving simulation test of a driver, and can effectively reduce errors caused by over idealization of a whole vehicle simulation model by comparing test results obtained by the two test modes, reduce the gap between the test results and actual application scenes, improve the reproduction degree and precision of test data, meet the test and evaluation of test personnel on the EPS power steering function, ensure that the evaluation result of the EPS power steering function is more real and reliable, and improve the test quality.

For the convenience of understanding, the upper computer body and the HIL simulation system are described, the upper computer body is provided with software, the software provides parameters for driving a steering model, the software comprises steering wheel angle input, a mechanical system and detailed description of the steering power-assisted system, the software carries out detailed parametric modeling on steering machinery, the steering power-assisted system, steering control and other parts in the steering system, the steering mechanical model comprises steering wheels, steering columns, universal joints, torsion bars, gears, racks, steering column rigidity and damping, the torsion bar rigidity and damping and other factors are considered in detail, meanwhile, the steering system considers the influence of a kingpin, kingpin parameters, an inner dip angle, an outer dip angle and the like, and the control algorithm and the simulation model of the upper computer body are used for interacting with the HIL simulation system, carrying out online monitoring operation tasks and carrying out EPS automatic testing.

The HIL simulation system uses a real-time simulation system, and is internally provided with each functional board card, and the main functions of the HIL simulation system are to provide required switching signals and communication control signals for the work of a controller, collect the torque of a power-assisted motor based on sensor information such as steering wheel angle sensor information and steering wheel hand torque and the like required by a hardware platform simulation EPS controller, and transmit the power-assisted torque to a whole vehicle simulation model, so that EPS closed-loop function simulation is realized; in addition, in the simulation test process, fault injection is carried out on some signals of the controller, such as faults of short circuit, open circuit, virtual connection and the like, so that fault diagnosis test of the power steering system is realized; the related information is transmitted to the upper computer body for real-time display and recording; meanwhile, the EPS assembly 204 to be tested is controlled through the upper computer body and the HIL simulation system, and automatic test of the power steering function is completed.

Further, the autopilot simulation assembly 300 is disposed on the position adjustment structure 400 to adjust the position of the autopilot simulation assembly 300 via the position adjustment structure 400, so as to connect the steering wheel connection 301 of the autopilot simulation assembly 300 and the steering wheel 102 of the test shaft assembly 200 together.

The position adjustment structure 400 can realize the position adjustment function through a gear rack assembly or a screw nut assembly and other types of structures, and all types of structures capable of meeting the use requirements are within the protection scope of the utility model; alternatively, in one embodiment of the present utility model, the position adjustment mechanism 400 employs a lead screw nut pair to achieve the adjustment function.

Specifically, the position adjustment structure 400 includes a support mounting plate 401, a load bearing mounting plate 402, and a first screw nut assembly 403 disposed between the support mounting plate 401 and the load bearing mounting plate 402, where the support mounting plate 401 is used to support the autopilot simulation structure, the load bearing mounting plate 402 is rotatably disposed on a support frame, a first sliding connector 404 is disposed on the load bearing mounting plate 402, and a first sliding connector 405 that is slidably matched with the sliding connector is disposed at the bottom of the support mounting plate 401, so as to implement pitch angle adjustment of the autopilot simulation assembly 300 through rotational connection of the load bearing mounting plate 402 and the support frame; the screw of the first screw nut assembly 403 is rotatably disposed on the bearing mounting plate 402, the nut is connected with the supporting mounting plate 401, the nut of the first screw nut is made to move linearly along the screw by rotating the screw of the first screw nut, the adjustment of the relative position of the autopilot simulation assembly 300 and the steering wheel 102 is achieved, and the bearing capacity of the autopilot simulation assembly 300 is improved by the cooperation of the first sliding connection 404 and the first sliding fit 405.

It should be understood that the first sliding connection member 404 and the first sliding matching member 405 may be in a matching form such as a sliding chute or a sliding rod, and any structure capable of meeting the sliding connection requirement is within the scope of the present utility model; optionally, the first sliding connection 404 provided in the embodiment of the present utility model is a sliding rail, and the first sliding matching piece 405 is a sliding block that is in sliding fit with the sliding rail.

In addition, one side of the load-bearing mounting plate 402 is bent downward to form a connection part, and the connection part is rotationally connected with the support frame, so as to realize the adjustment of the pitch angle of the load-bearing mounting plate 402, thereby realizing the adjustment of the pitch angle of the autopilot simulation assembly 300.

In addition, as shown in fig. 5, two opposite arc limiting holes are further provided on the connecting portion, and a limiting structure matched with the arc limiting holes is provided on the supporting frame to limit the limit value of the pitching angle of the bearing mounting plate 402, so that the steering wheel connecting piece 301 of the automatic driving simulation assembly 300 cannot be connected with the steering wheel 102 after the pitching angle of the bearing mounting plate 402 is prevented from exceeding the limit value.

As shown in fig. 2, the seat 103 and the position adjusting structure 400 are slidably disposed on the linear sliding table 500 through a second sliding connection piece, and the linear sliding table 500 is provided with a driving motor and a second screw nut assembly connected with an output shaft of the driving motor, a nut of the second screw nut assembly is connected with the seat 103 and the position adjusting structure 400, so that the driving motor drives a screw of the second screw nut assembly to rotate, the nut of the second screw nut assembly drives the seat 103 to be connected with the position adjusting structure 400, thereby adjusting a relative position of the seat 103 and the steering wheel 102, facilitating real vehicle simulation by a driver, adjusting a relative position of the automatic driving simulation assembly 300 and the steering wheel 102, and facilitating automatic driving simulation after the steering wheel 102 is connected with the steering wheel connection piece 301.

The test shaft assembly 200 provided by the utility model further comprises a speed reducer 203 and a connection switching member, and the driver simulation detection member comprises a driving torque sensor 205; the speed reducer 203 is connected with an output shaft of the test motor 202 through a coupler so as to adjust the rotating speed of the test motor 202 through the speed reducer 203, and apply torque load to the test shaft body 201, thereby simulating the resistance when the automobile turns; the EPS assembly 204 to be tested is mounted on the test shaft body 201 through a connection switching member, and the driving torque sensor 205 is mounted on the test shaft body 201 to measure and feed back the applied load torque value in real time through the driving torque sensor 205, thereby precisely controlling the load application condition.

Specifically, the connection switching piece is detachably connected with a mounting plate, connection hole sites are arranged on the mounting plate, the mounting hole sites on different mounting plates are different so as to adapt to different EPS components 204 to be tested, different mounting plates are selected according to different EPS components 204 to be tested, the EPS components 204 to be tested are connected through the connection hole sites on the mounting plate, namely, the EPS components 204 to be tested are mounted on the connection switching piece, and then the connection switching piece is mounted on the test shaft body 201 through a coupler so as to realize the mounting of the EPS components 204 to be tested on the test shaft body 201.

Based on the setting of connecting the switching piece, to different EPS subassemblies that await measuring, but corresponding connection switching piece of customizable and installation axle, connect the switching piece and install to EPS installation base through the fixed orifices on, the installation axle is connected through centre gripping formula shaft coupling and test axle body 201 to can conveniently accomplish the change of EPS subassembly 204 that awaits measuring, make this EPS detection device no longer restrict to specific EPS subassembly, be convenient for accomplish the detection of multiple EPS subassembly.

In addition, the automatic driving simulation assembly 300 further comprises a driving simulation shaft 303 and a magnetic powder clutch 304 arranged on the driving simulation shaft 303, the magnetic powder clutch 304 is connected and arranged on the driving simulation shaft 303 through a key slot, the magnetic powder clutch 304 is in communication connection with the upper computer body, so that whether the shafts at two ends of the magnetic powder clutch 304 rotate or not can be controlled through signals sent by the upper computer body, and further, when an automatic driving test is performed, the automatic driving simulation assembly 300 and the steering wheel 102 can be completed without disconnecting the connection.

The automatic driving simulation detecting member includes a driving simulation torque sensor 305, the driving simulation torque sensor 305 is disposed on the driving simulation shaft 303, and the driving simulation torque sensor 305 is disposed between the magnetic particle clutch 304 and the driving simulation motor 302 to measure the torque input from the driving simulation motor 302 in real time through the driving simulation torque sensor 305.

As shown in fig. 2, the test shaft assembly 200 is disposed on the test platform 600, and a platform supporting device is disposed at the bottom of the test platform 600, and the platform supporting device includes four platform adjusting structures 700 distributed in a rectangular array, so that the pitch angle and the height of the test platform 600 can be adjusted by the four platform adjusting structures 700, thereby truly simulating the driving posture of a real vehicle and greatly improving the driving experience of a driver.

Specifically, the platform adjustment structure 700 includes a connection lug 701 and a lifting assembly 702, the connection lug 701 is rotatably connected to the lifting assembly 702 to implement the pitch angle adjustment of the test platform 600 by the relative rotation between the connection lug 701 and the lifting assembly 702, and the lifting assembly 702 is used to make the connection lug 701 perform the lifting motion to implement the height adjustment of the test platform 600.

Specifically, the connection lug plate 701 is provided with a first shaft sleeve connection hole, the lifting assembly 702 is provided with a first matching connection hole coaxial with the first shaft body connection hole, and the first shaft sleeve connection hole and the first matching connection hole are connected through the graphite shaft sleeve, so that the connection lug plate 701 and the lifting assembly 702 are connected in a rotating manner.

It should be understood that, the lifting assembly 702 may be lifted by a screw-nut pair, a rack-and-pinion assembly, or a chain transmission, and any lifting manner capable of meeting the use requirement is within the scope of the present utility model; optionally, the lifting assembly 702 provided in the embodiment of the present utility model lifts the test platform 600 through a screw nut pair.

In addition, the position of the test platform 600 close to the steering wheel 102 is also provided with a real vehicle instrument, so that the real driving simulation can be assisted, the instrument is fixedly installed through an adjustable bracket, and the height is adjusted as required; meanwhile, the lifting assembly 702 is provided with the synchronous adjusting assembly 703, the synchronous adjusting assembly 703 comprises a limiting block and a concentric shaft, the limiting block is provided with a limiting hole, the concentric shaft penetrates through the limiting holes of two adjacent limiting blocks, and one end of the concentric shaft is provided with a hand wheel for auxiliary adjustment so as to achieve consistency in adjustment of heights and angles of two sides of the test platform 600.

The platform adjustment structure 700 further includes a base, and the platform adjustment structure 700 is mounted on the base through a first mounting plate 704 and a second mounting plate 705 to support the platform adjustment structure 700 and the test platform 600 through the base.

The two sides of the second mounting plate 705 are respectively provided with an ear plate, the two side ear plates are respectively provided with a second sleeve connecting hole and a third sleeve connecting hole, the two sides of the lifting assembly 702 are respectively provided with a second matching connecting hole and a third matching connecting hole, and the second sleeve connecting hole and the second matching connecting hole are connected with each other and the third sleeve connecting hole and the third matching connecting hole are connected with each other through a graphite shaft sleeve.

Still further, the driver simulation assembly 100 further includes a switch mounting platform 800, on which a scram switch, a gear switch and an ignition switch are disposed, and the pedal 101 may be configured as a real vehicle ignition, brake and clutch pedal to assist the driver in performing the actual driving simulation test.

The EPS test device further includes a mobile display 900, where the mobile display 900 includes a simulation display and a display support structure, so that the simulation display is supported by the display support structure, a driver views driving postures and real-time simulation data of a whole vehicle simulation model under various scenes through the simulation display, the data recorded in the part can reflect performance of the EPS component 204 to be tested under various scenes such as different weather, different road conditions, different running speeds and the like of the vehicle, and in addition, the driver can truly feel the power assisting condition of the EPS component 204 to be tested during real driving test.

Specifically, the present utility model relates to a method for manufacturing a semiconductor device; the simulation display is arranged on the display supporting structure and is electrically connected with the HIL simulation system, and the bottom of the display supporting structure is provided with the brake type castor so as to adjust the relative positions of the display and a driver.

The terms first and second and the like in the description and in the claims and in the above-described figures are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to the listed steps or elements but may include steps or elements not expressly listed.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An EPS test apparatus, comprising:

the upper computer comprises an upper computer body and an HIL simulation system which is in communication connection with the upper computer body, and the HIL simulation system can store a whole vehicle simulation model;

a driver simulation assembly including pedals, steering wheel, and seat;

the test shaft assembly comprises a test shaft body connected with the steering wheel and a test motor used for driving the test shaft body to rotate, and the EPS assembly to be tested is arranged on the test shaft body;

the automatic driving simulation assembly comprises a steering wheel connecting piece and a driving simulation motor, wherein the steering wheel connecting piece is used for being detachably connected with the steering wheel, the driving simulation motor is used for driving the steering wheel to rotate, and the driving simulation motor is in communication connection with the HIL simulation system; and

the detection assembly comprises a driver simulation detection piece and an automatic driving simulation detection piece, wherein the driver simulation detection piece is used for detecting real vehicle gestures and simulation data of a driver in real vehicle simulation, the automatic driving simulation detection piece is used for detecting real vehicle gestures and simulation data of an automatic driving simulation, and the driver simulation detection piece and the automatic driving simulation detection piece are both in communication connection with the HIL simulation system.

2. The EPS test device of claim 1, wherein the autopilot simulation assembly is disposed on a position adjustment structure;

the automatic driving simulation structure comprises a support mounting plate, a bearing mounting plate and a first screw nut assembly arranged between the support mounting plate and the bearing mounting plate, wherein the support mounting plate is used for supporting the automatic driving simulation structure, the bearing mounting plate is rotatably arranged on a support frame, a first sliding connecting piece is arranged on the bearing mounting plate, and a first sliding matching piece which is in sliding fit with the sliding connecting piece is arranged at the bottom of the support mounting plate.

3. The EPS test device according to claim 2, characterized in that the seat and the position adjustment structure are slidably disposed on a linear sliding table through a second sliding connector, and a driving motor and a second screw nut assembly connected with an output shaft of the driving motor are disposed on the linear sliding table, and nuts of the second screw nut assembly are connected with the seat and the position adjustment structure.

4. The EPS test device according to claim 1, characterized in that the test shaft assembly further comprises a decelerator and a connection switching member, the driver simulation detecting member comprising a driving torque sensor;

the speed reducer is connected with an output shaft of the test motor through a shaft sleeve, the EPS component to be tested is mounted on the test shaft body through a connection switching piece, and the driving torque sensor is mounted on the test shaft body.

5. The EPS test device of claim 1, wherein the autopilot simulation assembly further comprises a autopilot simulation shaft and a magnetic particle clutch disposed on the autopilot simulation shaft, and wherein the magnetic particle clutch is in communication with the upper computer body.

6. The EPS test device according to claim 5, wherein the automatic driving simulation detecting member includes a driving simulation torque sensor provided on the driving simulation shaft.

7. The EPS test device according to claim 1, wherein the test shaft assembly is provided on a test platform, a platform support device is provided at the bottom of the test platform, and the platform support device includes four platform adjustment structures distributed in a rectangular array;

the platform adjusting structure comprises a connecting lug plate and a lifting assembly, wherein the connecting lug plate is rotationally connected to the lifting assembly, and the lifting assembly is used for enabling the connecting lug plate to do lifting motion.

8. The EPS test device of claim 7, wherein the lifting assembly is provided with a synchronous adjusting assembly, the synchronous adjusting assembly comprises a limiting block and a concentric shaft, the limiting block is provided with limiting holes, and the concentric shaft penetrates through the limiting holes of two adjacent limiting blocks.

9. The EPS test device of claim 1, wherein the driver simulation assembly further comprises a switch mount having a scram switch, a gear switch, and an ignition switch disposed thereon.

10. The EPS test device of claim 1, further comprising a mobile display, the mobile display comprising an emulated display and a display support structure;

the simulation display is arranged on the display supporting structure and is electrically connected with the HIL simulation system, and braking casters are arranged at the bottom of the display supporting structure.