Electric control power-assisted steering and front suspension practical training platform

Abstract

The utility model belongs to the technical field of automobile teaching aids, and particularly relates to an electric control power-assisted steering and front suspension practical training platform, which comprises a platform frame, an electric power-assisted steering mechanism is arranged on the platform frame and consists of a steering engine assembly, a steering wheel and tires, and shock absorbers are arranged between the tires and the platform frame. A steering angle sensor, a torque sensor, a vehicle speed sensor and an engine rotating speed signal device are arranged in a diagnosis seat on the rack, a color principle circuit diagram, an engine ECU, an EPS control ECU, a voltage signal detection displayer, a torque sensor voltage displayer, a rotating speed adjusting knob and a vehicle speed adjusting knob are integrated on a panel of the diagnosis seat, and lifting supporting tables are arranged on the two sides of the rack. A pressure sensor is arranged on the contact face of the supporting table and used for simulating different load working conditions of the front suspension, and the practical training table is suitable for automobile professional teaching in vocational colleges and universities, assists students in mastering principles and debugging and fault diagnosis skills of an electric control steering and front suspension system, and improves practical operation and system cognitive competence.

Description

Technical Field

[0001] This utility model belongs to the field of automotive teaching aids technology, specifically an electric power steering and front suspension training platform. Background Technology

[0002] The electric power steering training platform focuses on hands-on teaching of automotive electric power steering systems. It can simulate the steering assistance effect under different working conditions and is equipped with fault setting and detection modules to help students master system debugging, fault diagnosis and other skills. It is suitable for teaching and skills training in automotive majors in vocational colleges, and can improve students' practical operation and system understanding.

[0003] The existing electronic power steering training platform mainly consists of the following parts: steering wheel, steering column, electronic control unit, fault setting module, display panel and base. The working principle is as follows: the training platform drives the steering column by rotating the steering wheel. The torque sensor detects the input torque and steering angle signal of the steering wheel in real time, calculates the required amount of power assist and drives the motor to run. The gear mechanism assists steering. Students use instruments to detect signal changes, analyze and troubleshoot faults, thereby mastering the signal transmission, power assist control and fault diagnosis logic of the electronic power steering system.

[0004] Current electronic power steering training platforms have the following drawbacks: poor compatibility with real vehicles, often using simplified non-original parts, unable to reproduce the control logic of the original vehicle's electronic power steering system, disconnect between teaching and actual vehicle maintenance, insufficient focus of vocational skills training, and limited simulation of working conditions, generally using a fixed load design, unable to simulate different load conditions such as vehicle unloaded to fully loaded, making it difficult to demonstrate the impact of load on steering assist and suspension performance, and students lack practical knowledge of "data-driven analysis". Therefore, to address the above problems, an electronic power steering and front suspension training platform is proposed. Utility Model Content

[0005] To address the shortcomings of existing electronic steering training platforms, a new electronic power steering and front suspension training platform is proposed.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: An electric power steering and front suspension training platform, comprising a frame, on which an electric power steering mechanism is mounted. The electric power steering mechanism includes a steering gear assembly, a steering wheel connected to the steering gear assembly, and tires connected to both ends of the steering gear assembly. A shock absorber is mounted between the tires and the frame. A diagnostic port is mounted on the frame. The diagnostic port has a built-in steering angle sensor, torque sensor, vehicle speed sensor, and engine speed signal device for detecting various data of the electric power steering mechanism. The diagnostic port panel displays a color schematic diagram, an engine ECU, an EPS control ECU, a signal input socket, an ignition switch, a voltage signal detection display, a torque sensor VT voltage signal display, a left turn assist indicator, a right turn assist indicator, an engine speed signal adjustment knob, a vehicle speed signal adjustment knob, and a data transmission port. The voltage signal detection display is used to display steering, engine speed, and vehicle speed signal values.

[0007] Preferably, the test bench has liftable support platforms on both sides directly below the tires via a drive device. Pressure sensors are installed on the contact surfaces of the support platforms with the tires. The lifting of the support platforms is used to adjust the contact pressure between them and the tires to meet the test requirements of the front suspension under different loads.

[0008] Preferably, the panel of the diagnostic port is covered with plexiglass.

[0009] Preferably, the four corners of the bottom of the platform are equipped with swivel casters.

[0010] The beneficial effects of this utility model are:

[0011] 1. Real-vehicle-level teaching adaptation: It adopts original factory electronic power steering system components, retains the original vehicle control logic, closely matches the real vehicle repair scenario, and improves the practicality of vocational skills training;

[0012] 2. Dynamic signal visualization: The panel integrates a real-time monitoring display with the same color circuit diagram as the original vehicle, intuitively presenting parameters such as steering torque and vehicle speed, as well as signal flow, reducing the difficulty of learning the principles of the electronic control system;

[0013] 3. Variable load simulation: The electric push rod drives the platform in conjunction with pressure sensors to simulate different working conditions such as no load to full load, and demonstrate the impact of load on steering assist and suspension performance, thus enhancing the "data-driven analysis" capability. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This is a structural diagram of the entire utility model;

[0016] Legend:

[0017] 1. Test bench; 2. Electric power steering mechanism; 201. Steering gear assembly; 202. Steering wheel; 203. Tire; 3. Shock absorber; 4. Diagnostic connector; 5. Color schematic diagram; 6. Engine ECU; 7. EPS control ECU; 8. Signal input socket; 9. Ignition switch; 10. Voltage signal detection display; 11. Torque sensor VT3 voltage signal display; 12. Torque sensor VT6 voltage signal display; 13. Left turn assist indicator; 14. Right turn assist indicator; 15. Engine speed signal adjustment knob; 16. Vehicle speed signal adjustment knob; 17. Data transmission port; 18. Support; 19. Pressure sensor; 20. Acrylic glass; 21. Swivel casters. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Specific implementation examples are given below.

[0020] Please see Figure 1This utility model discloses an electric power steering and front suspension training platform, comprising a platform 1, on which an electric power steering mechanism 2 is mounted. The electric power steering mechanism 2 includes a steering gear assembly 201, a steering wheel 202 connected to the steering gear assembly 201, and tires 203 connected to both ends of the steering gear assembly 201. A shock absorber 3 is disposed between the tires 203 and the platform 1. A diagnostic port 4 is mounted on the platform 1, and the diagnostic port 4 has a built-in angle sensor, torque sensor, vehicle speed sensor, and engine speed signal device for detecting various data of the electric power steering mechanism 2. The panel of the diagnostic port 4 displays a color schematic diagram 5 and an engine speed signal. The system includes: ECU6, EPS control ECU7, signal input socket 8, ignition switch 9, voltage signal detection display 10, torque sensor VT3 voltage signal display 11, torque sensor VT6 voltage signal display 12, left turn assist indicator 13, right turn assist indicator 14, engine speed signal adjustment knob 15, vehicle speed signal adjustment knob 16, and data transmission port 17. The voltage signal detection display 10 displays steering, engine speed, and vehicle speed signal values. During operation, the operator turns the steering wheel 202, which drives the steering gear assembly 201 through the steering column, converting rotational motion into rack linear motion, thus steering the tires 203. During this process, the torque sensor... The device detects the steering wheel input torque in real time, converts it into a voltage signal, and transmits it to the EPS control ECU7. The steering angle sensor monitors the steering wheel rotation angle and sends it synchronously to the EPS control ECU7. The vehicle speed sensor and engine speed signal device simulate the real vehicle speed and engine speed signals through the engine speed signal adjustment knob 15 and the vehicle speed signal adjustment knob 16, and input them to the EPS control ECU7 as power assist calculation parameters. The EPS control ECU7 calculates the required motor assist torque according to a preset algorithm, drives the built-in motor of the steering gear to output power assist through reduction gears, and achieves the steering characteristics of "high power assist at low speed and low power assist at high speed". The signals from each sensor are transmitted to the electrical display on the panel through the diagnostic connector 4. The voltage signal display 10 of the pressure sensor and the voltage signal display 11 of the torque sensor VT3 and the voltage signal display 12 of the torque sensor VT6 are displayed in real time. The left turn assist indicator 13 and the right turn assist indicator 14 synchronously indicate the assist direction. This utility model adopts a real electronic power steering system, retains the original vehicle ECU control logic and sensor characteristics, so that the teaching is close to the actual vehicle repair scenario. Multi-dimensional signal monitoring and real-time data display, together with the color schematic diagram (the same color as the original vehicle wiring harness), intuitively present the signal flow, which makes it easier for students to establish a complete cognitive chain of "operation-signal-control". Manually adjusting the vehicle speed and RPM signals can simulate the assist changes under different working conditions, which is suitable for the teaching needs of multiple courses.

[0021] Furthermore, on both sides of the test stand 1, directly below the tire 203, there are liftable support platforms 18 connected by a drive device. Pressure sensors 19 are installed on the contact surfaces of the support platforms 18 with the tire 203. The lifting and lowering of the support platforms 18 is used to adjust the contact pressure between them and the tire 203, meeting the testing requirements of the front suspension under different loads. During operation, the support platforms 18 are driven by a drive device (in this invention, the drive device is an electric push rod, but not limited to an electric push rod, and can be set according to actual conditions). When the support platforms 18 rise to contact the bottom of the tire 203, the pressure sensors 19 detect the pressure on the tire 203 in real time. Simulating vehicle operating conditions such as no load, half load, and full load, the pressure signal is transmitted to the EPS control ECU7 through diagnostic port 4. The EPS control ECU7 adjusts the power assist curve according to the load change. Students can observe the impact of load on power steering by comparing the steering torque voltage values ​​under different pressures. Through the above settings, dynamic load simulation can be performed, breaking through the fixed load limitation of traditional training benches. It can reproduce the front suspension stress state of the vehicle under different loads, deepen students' understanding of the relationship between "load-power steering assist-suspension performance", cultivate students' "data-driven analysis" maintenance thinking, and closely resemble the actual working scenario of automotive engineers in chassis tuning.

[0022] Furthermore, the panel of the diagnostic port 4 is covered with plexiglass 20. During operation, the plexiglass 20 covers the panel of the diagnostic port 4, forming a physical protective layer to prevent dust, oil, and water stains in the teaching environment from entering the panel, avoid poor contact of sensor terminals and ECU interfaces due to contamination, buffer the impact of accidental collisions on panel components, protect the color schematic diagram from scratches or wear, and the surface of the plexiglass is treated with anti-static agents to reduce sensor signal fluctuations caused by electrostatic interference.

[0023] Furthermore, the four corners of the bottom of the platform 1 are equipped with swivel casters 21; during operation, releasing the brakes of the swivel casters 21 allows the platform 1 to be moved horizontally or turned, while depressing the brakes of the swivel casters 21 keeps the platform 1 stationary during teaching, avoiding slippage that could lead to safety hazards. The layout of the training platform can be quickly adjusted to meet the needs of integrated theory and practice teaching.

[0024] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An electric power steering and front suspension training platform, comprising a platform (1), wherein an electric power steering mechanism (2) is provided on the platform (1), the electric power steering mechanism (2) comprising a steering gear assembly (201), a steering wheel (202) connected to the steering gear assembly (201), and tires (203) connected to both ends of the steering gear assembly (201), wherein a shock absorber (3) is provided between the tires (203) and the platform (1), and a diagnostic port (4) is provided on the platform (1), characterized in that: The diagnostic port (4) is equipped with a built-in angle sensor, torque sensor, vehicle speed sensor, and engine speed signal device to detect various data of the electric power steering mechanism (2). The panel of the diagnostic port (4) is equipped with a color schematic diagram (5), engine ECU (6), EPS control ECU (7), signal input socket (8), ignition switch (9), voltage signal detection display (10), torque sensor VT3 voltage signal display (11), torque sensor VT6 voltage signal display (12), left turn assist indicator (13), right turn assist indicator (14), engine speed signal adjustment knob (15), vehicle speed signal adjustment knob (16), and data transmission port (17). The voltage signal detection display (10) is used to display steering, speed, and vehicle speed signal values. The test stand (1) has liftable support platforms (18) on both sides directly below the tire (203) via a drive device. Pressure sensors (19) connected to the EPS control ECU (7) are installed on the contact surface of the support platform (18) with the tire (203). The lifting of the support platform (18) is used to adjust the contact pressure between it and the tire (203) to meet the test requirements of the front suspension under different loads.

2. The electronic power steering and front suspension training platform according to claim 1, characterized in that: The panel of the diagnostic port (4) is covered with plexiglass (20).

3. The electronic power steering and front suspension training platform according to claim 1, characterized in that: The four corners of the bottom of the platform (1) are equipped with swivel casters (21).

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