Steer-by-wire testing device

Abstract

The utility model discloses a steer-by-wire testing device. The testing device comprises a base, a drive-by-wire testing assembly arranged on the surface of the base and a connecting and fixing assembly arranged on the surface of the base, the drive-by-wire testing assembly comprises a drive-by-wire steering module detachably connected to the surface of the base, a stepping motor is arranged on the surface of the base, and a sensor is detachably connected to the surface of the base. The research and development of the steer-by-wire module test system can realize automatic identification of the test module through a program, realizes automatic burning, automatic acquisition and storage of test data, and automatic printing and output of information such as product material number version bar codes, and when the test becomes more complex or the test is required to be repeated, the test data can be automatically recorded. The test system can automatically complete all processes of signal switching, measurement and recording, even analysis of passing and failure results, and after the DUT is placed in the clamp, the test system automatically runs all tests, so that the best test speed, reliability and repeatability can be realized, and the development is relatively economical and practical.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering equipment, in particular to a wire-controlled steering test device. Background Art

[0002] The development of automobile steering systems has gone through mechanical steering, hydraulic power steering, electro-hydraulic steering, electric power steering, and steer-by-wire. Electric power steering is the mainstream product of current automobile steering systems, while steering by wire (SBW) is the future technology development direction.

[0003] An existing patent (publication number CN221148074U) discloses a device for testing automotive steer-by-wire performance. The device comprises a main body, two supports disposed on each side of the main body, and a base plate disposed at the upper end thereof for simulating different road surfaces. A protruding protective frame is disposed on the outer side of the base plate, which is used to retain accumulated water to simulate a waterway. A water baffle is also provided on one side of the base plate to prevent water droplets from splashing outward. This utility model utilizes a variety of different base plates to replace a variety of different road surfaces for simulated, field-based steer-by-wire performance testing. This improves the integrity and accuracy of test data presented by various road resistances, facilitating subsequent processing and use in production. It also facilitates simulating a waterway for performance testing and automatically blocks water droplets from escaping during testing, ensuring stable operation of the device.

[0004] However, there are some problems in the use of existing wire-controlled steering test devices. 1. With the continuous development of intelligent chassis platform, the performance of the whole vehicle is also constantly improving. It is necessary to improve the wire-controlled steering performance of the intelligent chassis and analyze and verify the wire-controlled steering of the actual vehicle to ensure that the market demand is met with minimal changes; 2. The installation of the fixed stabilization device of the test object in the current wire-controlled steering test device on the market is relatively cumbersome, which reduces the overall stability and is not convenient for installation and connection. Utility Model Content

[0005] The purpose of the present invention is to provide a steer-by-wire test device to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a base, a wire-controlled test assembly arranged on the surface of the base, and a connection and fixing assembly arranged on the surface of the base;

[0007] The wire-controlled test assembly includes a wire-controlled steering module detachably connected to the surface of the base, a stepping motor is provided on the surface of the base, a sensor is detachably connected to the surface of the base, and a data acquisition card is detachably connected to the surface of the base, and data is collected through the data acquisition card;

[0008] The connection and fixing assembly includes a column fixedly connected to the surface of the base, a connection hole is opened on the surface of the column, a cover plate is movably connected to the top of the column, a connection hole is opened on the surface of the cover plate, and a bolt is connected inside the connection hole to connect with the outside through the column.

[0009] Preferably, the wire-controlled test assembly further comprises a rotating shaft connected to the output end of the stepping motor, and one end of the rotating shaft is cooperatively connected to an adjusting wheel.

[0010] Preferably, mounting seats are fixedly connected to both sides of the base surface, and the stepping motor is cooperatively connected to one side of the mounting seat.

[0011] Preferably, an opening is provided on the surface of the mounting seat, and the moving wheel is movably connected inside the opening.

[0012] Preferably, a test wheel is cooperatively connected inside the opening, and a fixed shaft is cooperatively connected between the test wheels.

[0013] Preferably, both ends of the wire-controlled steering module are connected with wires, one end of the wires is connected with a stepping motor, and one end of the wires is connected with a data acquisition card.

[0014] Preferably, the fixed shaft is connected to the top of the column, and the top of the column is provided with an opening.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This utility model develops a steer-by-wire module test system that can automatically identify test modules through a program, automatically burn test data, automatically capture and save test data, and automatically print out information such as product part numbers and version barcodes. When tests become more complex or repeated tests are required, the test system can automatically complete all processes from signal switching, measurement, and recording, even including analysis of pass and fail results. After the DUT is placed in the fixture, the test system automatically runs all tests. This achieves optimal test speed, reliability, and repeatability, and is relatively economical and practical to develop. Using a stepper motor control system for rotational operation improves test accuracy, repeatability, efficiency, and safety. Customized testing can also be achieved through programming to better meet testing requirements. Data acquisition cards offer advantages in analog signal acquisition and processing, such as high precision, large capacity, fast performance, stability, reliability, and flexibility. They are widely used in various test and measurement fields and are key devices for achieving high-quality data acquisition and processing. Sensors offer advantages such as high precision, fast response, high reliability, low power consumption, good stability, and easy integration. First, place the steer-by-wire module into the automated test system. Scan the product part number. The test system automatically identifies and selects the corresponding test procedure, generates a serial number based on the configuration requirements, and burns the customer-provided firmware into the product MCU. The system automatically calls test cases based on the test items, captures signals, and displays test results according to test specifications. Finally, the test information is recorded and saved in text format. Product information is automatically printed according to customer requirements. The entire process requires no manual intervention, and the required test requirements are directly output. Every detail is automatically and accurately assessed, eliminating omissions and misjudgments. Automatic multi-item centralized testing and multi-test point synchronous testing reduce workstations and working hours, greatly improving production efficiency and product quality while also avoiding labor waste and human misjudgment.

[0017] 2. The utility model: When fixing the test object, the object can be placed in the opening opened on the surface of the column. At this time, the top of the column is covered by a cover plate. The top of the column and the surface of the cover plate are both provided with connection holes. By tightening bolts in the connection holes, the cover plate is fixed to the surface of the column, so that the object inside the column can be compressed and protected, thereby increasing the overall safety. Then, the fixing and stabilizing device of the test object of the wire-controlled steering test device is relatively simple to install during the test, thereby increasing the overall stability and facilitating installation and connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the test wheel structure of an embodiment of the utility model;

[0020] Figure 3This is a schematic diagram of the rotating shaft structure of an embodiment of the utility model;

[0021] Figure 4 Schematic diagram of the overall principle module of the utility model embodiment.

[0022] In the figure: 1. Base; 2. Wire-controlled test assembly; 201. Wire-controlled steering module; 202. Sensor; 203. Data acquisition card; 204. Stepper motor; 205. Rotating shaft; 206. Adjusting wheel; 3. Wire; 4. Mounting seat; 5. Opening; 6. Test wheel; 7. Fixed shaft; 8. Connecting and fixing assembly; 801. Column; 802. Connecting hole; 803. Cover plate; 804. Bolt. DETAILED DESCRIPTION

[0023] To facilitate solving the problem, the present invention provides a steer-by-wire test device. The following, in conjunction with the accompanying drawings, provides a clear and complete description of the technical solutions in the present invention. Obviously, the described embodiments represent only a portion of the present invention, not all of its embodiments. All other embodiments derived by persons of ordinary skill in the art based on the present invention without inventive effort are within the scope of protection of the present invention. Example

[0024] See also Figure 1-4 This embodiment provides a base 1, a wire-controlled test component 2 arranged on the surface of the base 1, and a connection and fixing component 8 arranged on the surface of the base 1, the wire-controlled test component 2 includes a wire-controlled steering module 201 detachably connected to the surface of the base 1, a stepping motor 204 is provided on the surface of the base 1, a sensor 202 is detachably connected to the surface of the base 1, and a data acquisition card 203 is detachably connected to the surface of the base 1, and data is collected through the data acquisition card 203. The connection and fixing component 8 includes a column 801 fixedly connected to the surface of the base 1, a connection hole 802 is opened on the surface of the column 801, a cover plate 803 is movably connected to the top of the column 801, a connection hole 802 is opened on the surface of the cover plate 803, a bolt 804 is fitted and connected to the inside of the connection hole 802, and is connected to the outside through the column 801.

[0025] In this embodiment, the wire-controlled test assembly 2 further includes a rotating shaft 205 connected to the output end of the stepping motor 204 , and one end of the rotating shaft 205 is cooperatively connected to an adjusting wheel 206 .

[0026] Specifically, the adjusting wheel 206 is installed via the rotating shaft 205 , and when the rotating shaft 205 rotates, the adjusting wheel 206 is driven to rotate.

[0027] Furthermore, mounting seats 4 are fixedly connected to both sides of the surface of the base 1, the stepping motor 204 is connected to one side of the mounting seat 4, an opening 5 is provided on the surface of the mounting seat 4, the moving wheel is movably connected inside the opening 5, a test wheel 6 is connected inside the opening 5, and a fixed shaft 7 is connected between the test wheels 6.

[0028] Specifically, the stepper motor 204 is installed and connected through the mounting base 4 , and the test wheel 6 is facilitated to move through the opening 5 .

[0029] Furthermore, a test wheel 6 is connected inside the opening 5, a fixed shaft 7 is connected between the test wheels 6, both ends of the wire-controlled steering module 201 are connected to a wire 3, one end of the wire 3 is connected to a stepper motor 204, and one end of the wire 3 is connected to a data acquisition card 203.

[0030] Specifically, the entire electrical equipment is controlled by wire 3 to increase overall safety and operability.

[0031] Working Principle: The development of the 201 test system for the steer-by-wire module enables automatic identification of the test module through a program, automatic burning, automatic acquisition and storage of test data, and automatic printing and output of information such as the product part number and version barcode. When the test becomes more complex or repeated testing is required, the test system can automatically complete all processes of signal switching, measurement, and recording, even including analysis of pass and fail results. After the DUT is placed in the fixture, the test system automatically runs all tests. This achieves optimal test speed, reliability, and repeatability, and is relatively economical and practical to develop. Using a stepper motor control system for rotational operation improves test accuracy, repeatability, efficiency, and safety. It also allows for customized testing through programming to better meet testing needs. Data acquisition card 203 offers advantages in analog signal acquisition and processing, such as high precision, large capacity, fast performance, stability, reliability, and flexibility. It is widely used in various testing and measurement fields and is a key device for achieving high-quality data acquisition and processing. Sensor 202 offers advantages such as high precision, fast response, high reliability, low power consumption, good stability, and easy integration. First, place the steer-by-wire module 201 into the automated testing system. Scan the product part number. The testing system automatically identifies and selects the corresponding test program, generates a serial number based on the configuration requirements, and burns the customer-provided firmware into the product MCU. The system automatically calls test cases based on the test items, captures signals, and displays test results according to test specifications. Finally, the test information is recorded and saved in text format. Product information is automatically printed according to customer requirements. No manual operation is required throughout the entire process, and the required test requirements are directly output. Automatically and accurately judge each detail without omissions or misjudgments. Automatic multi-item centralized testing and multi-test point synchronous testing reduce workstations and working hours. Greatly improve production efficiency and product quality, while also avoiding labor waste and human misjudgment. When fixing the test object, the object can be placed in the opening 5 opened on the surface of the column 801. At this time, the cover 803 is used to cover the top of the column 801. The top of the column 801 and the surface of the cover 803 are both provided with connection holes 802. By tightening the bolts 804 in the connection holes 802 and fixing the cover 803 to the surface of the column 801, the object inside the column 801 can be compressed and protected, thereby increasing overall safety. The fixed stabilization device of the wire-controlled steering test device is relatively simple to install during testing, thereby increasing overall stability and facilitating installation and connection.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steer-by-wire test device, characterized in that: It comprises a base (1), a wire-controlled test assembly (2) arranged on the surface of the base (1), and a connection and fixing assembly (8) arranged on the surface of the base (1); The control-by-wire test assembly (2) comprises a control-by-wire steering module (201) detachably connected to the surface of a base (1), a stepping motor (204) is provided on the surface of the base (1), a sensor (202) is detachably connected to the surface of the base (1), and a data acquisition card (203) is detachably connected to the surface of the base (1), and data is collected via the data acquisition card (203); The connecting and fixing assembly (8) comprises a column (801) fixedly connected to the surface of the base (1), a connecting hole (802) being provided on the surface of the column (801), a cover plate (803) being movably connected to the top of the column (801), a connecting hole (802) being provided on the surface of the cover plate (803), a bolt (804) being fitted and connected inside the connecting hole (802), and connecting to the outside through the column (801).

2. The steer-by-wire test device according to claim 1, characterized in that: The wire-controlled test assembly (2) further comprises a rotating shaft (205) connected to the output end of the stepping motor (204), and one end of the rotating shaft (205) is cooperatively connected to an adjusting wheel (206).

3. The steer-by-wire test device according to claim 1, characterized in that: Mounting seats (4) are fixedly connected to both sides of the surface of the base (1), and the stepping motor (204) is cooperatively connected to one side of the mounting seat (4).

4. The steer-by-wire test device according to claim 3, characterized in that: An opening (5) is provided on the surface of the mounting seat (4), and the moving wheel is movably connected inside the opening (5).

5. The steer-by-wire test device according to claim 4, characterized in that: The opening (5) is internally connected to a test wheel (6), and the test wheels (6) are connected to a fixed shaft (7).

6. The steer-by-wire test device according to claim 1, characterized in that: Both ends of the wire-controlled steering module (201) are cooperatively connected to wires (3), one end of the wire (3) is cooperatively connected to a stepping motor (204), and one end of the wire (3) is cooperatively connected to a data acquisition card (203).

7. The steer-by-wire test device according to claim 5, characterized in that: The fixed shaft (7) is connected to the top of the column (801), and an opening (5) is provided on the top of the column (801).

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