Power steering pump durability test control system and control method for automotive steering system

Abstract

This invention discloses a durability test control system for a power steering pump used in automotive steering systems, comprising a control interaction unit, a main control unit, a power supply unit, a drive unit, a pressure regulating unit, a power output unit, a hydraulic circulation unit, and a communication unit. The control interaction unit sends control commands and interacts with the main control unit through the communication unit; the main control unit sends drive signals according to the commands, controlling the drive unit and the pressure regulating unit to operate in coordination; the drive unit drives the power output unit to provide power to the hydraulic circulation unit; the pressure regulating unit adjusts the pressure of the hydraulic circulation unit to provide a pressurized environment for the pump under test, simulating actual working conditions. This system offers precise control, simple operation, low cost, and strong adaptability, and can efficiently complete durability tests on multiple pump models, improving operational convenience and ensuring the safety of the vehicle steering system. This invention also discloses a durability test control method for a power steering pump used in automotive steering systems.

Description

Technical Field

[0001] This invention belongs to the technical field of power steering system testing equipment. Specifically, this invention relates to a durability testing control system and control method for a power steering pump used in automotive steering systems. Background Technology

[0002] The power steering pump is a core component of the automotive steering system, and its durability directly affects the safety and reliability of vehicle operation. Current technologies for power steering pump durability testing often rely on complex integrated equipment, which typically features automated data analysis capabilities but is costly and complex to operate. Simpler testing devices, on the other hand, suffer from low control precision and non-standardized testing procedures, particularly lacking in the coordination between motor drive and pressure regulation, making it difficult to simulate load impacts under actual operating conditions, thus limiting the reference value of the test results.

[0003] Existing testing methods rely on host computer software for data acquisition and analysis. However, for grassroots production scenarios, there is a greater need for a control unit that is simple in structure, easy to operate, and can achieve coordinated operation of motor drive and pressure regulation. Basic durability performance can be judged by manual observation without the need for complex data processing functions.

[0004] A durability test control system for a power steering pump used in an automotive steering system is provided, particularly concerning how to improve the ease of operation for power steering pump durability testing. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides a power steering pump durability test control system for automotive steering systems, with the purpose of improving the ease of operation for power steering pump durability testing.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a durability test control system for a power steering pump for an automotive steering system, comprising a control interaction unit, a main control unit, a power supply unit, a drive unit, a pressure regulating unit, a power output unit, a hydraulic circulation unit, and a communication unit;

[0007] The control interaction unit is used to send control commands and interact with the main control unit through the communication unit;

[0008] The main control unit is used to send corresponding drive signals to the drive unit and the pressure regulating unit through the communication unit according to the instructions of the control interaction unit, so as to control the coordinated operation of the two.

[0009] The power supply unit is used to provide the operating voltage;

[0010] The drive unit is used to receive signals from the main control unit and drive the power output unit to operate.

[0011] The power output unit is connected to the hydraulic circulation unit to provide power input to it;

[0012] The pressure regulating unit is used to receive signals from the main control unit and regulate the pressure of the hydraulic circulation unit.

[0013] The hydraulic circulation unit is used to provide a pressurized environment for the power steering pump under test, simulating the durability test scenario under actual working conditions.

[0014] The control interaction unit is a touch screen host computer, which has an operation interface including motor control buttons, load control buttons, data recording buttons and parameter setting buttons.

[0015] The touchscreen host computer is also equipped with a parameter setting interface, which allows users to input loading time, unloading time, number of loading attempts, and product model parameters, and displays the current number of attempts and date information.

[0016] The main control unit is a PLC controller, which is connected to the control interaction unit, drive unit, and pressure regulation unit through the communication unit to realize command transmission and status feedback.

[0017] The power supply unit is a DC / AC module, which is used to convert external DC24V voltage into AC380V and AC220V.

[0018] The drive unit is a frequency converter, which receives signals from the main control unit and outputs AC0-380V voltage to control the operation of the power output unit; the power output unit is a motor.

[0019] The pressure regulating unit is a solenoid valve, and the communication unit is a data interaction module used to realize serial communication between the components.

[0020] This invention also provides a durability test control method for a power steering pump used in an automotive steering system, employing the aforementioned durability test control system for a power steering pump used in an automotive steering system, and comprising the following steps:

[0021] S1. The operating voltage is provided by the power supply unit, and the control interaction unit is started.

[0022] S2. Input the relevant parameters of the power steering pump under test through the control interaction unit;

[0023] S3. The power start command is issued through the control interaction unit. The main control unit controls the drive unit to operate according to the command, and the drive power output unit drives the hydraulic circulation unit to start. It is then determined whether the initial state of the system meets the test conditions.

[0024] S4. If the test conditions are met, a loading command is issued through the control interaction unit. The main control unit synchronously controls the pressure regulating unit to adjust the pressure of the hydraulic circulation unit, pressurizes the power steering pump under test, and the power output unit continuously drives the hydraulic circulation unit to start the durability test.

[0025] S5. The test may be paused or continued as needed during the test.

[0026] S6. After the set test parameters are reached, the system automatically stops pressure regulation, and the main control unit controls the power output unit and hydraulic circulation unit to stop operating.

[0027] S7. After recording the test data, remove the tested power steering pump, check its condition and record the results to complete the test.

[0028] In step S2, the relevant parameters include product model, loading time, unloading time, and loading times.

[0029] In step S3, the specific method for determining whether the initial state of the system meets the test conditions is as follows: observe whether the oil pressure is sufficient, whether there is oil leakage or abnormal noise. If the oil pressure is sufficient and there is no oil leakage or abnormal noise, the test conditions are met. If the liquid level is insufficient but there is no oil leakage or abnormal noise, the test conditions are met after replenishing the liquid level. If there is an unsolvable abnormal situation, the system will automatically stop and the test will end.

[0030] In step S5, when the test is paused, the pressure regulating unit stops regulating the pressure, while the power output unit continues to drive the hydraulic circulation unit; when the test is resumed, the pressure regulating unit is restarted to regulate the pressure.

[0031] In step S7, checking the status of the tested power steering pump includes checking for deformation, oil leaks, and damage to components.

[0032] The durability test control system for power steering pumps in automotive steering systems of the present invention has the advantages of precise control, simple operation, low cost, and strong adaptability. It can efficiently complete durability tests of multiple models of power steering pumps, improve the convenience of power steering pump durability test operation, and ensure the safety of vehicle steering systems. Attached Figure Description

[0033] This manual includes the following figures, which illustrate the following:

[0034] Figure 1This is a schematic diagram of the control logic connection of the durability test control system for the power steering pump of the automotive steering system of the present invention;

[0035] Figure 2 This is a schematic diagram of the touchscreen operation page;

[0036] Figure 3 This is a schematic diagram of the touchscreen parameter setting interface;

[0037] Figure 4 This is a flowchart of the durability test control method for the power steering pump of the automotive steering system according to the present invention. Detailed Implementation

[0038] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and to facilitate its implementation.

[0039] Firstly, such as Figures 1 to 3 As shown, this embodiment of the invention provides a durability test control system for a power steering pump used in an automotive steering system, including a control interaction unit, a main control unit, a power supply unit, a drive unit, a pressure regulation unit, a power output unit, a hydraulic circulation unit, and a communication unit.

[0040] Specifically, the durability test control system for power steering pumps in automotive steering systems provided in this embodiment of the invention standardizes the durability test process of power steering pumps through a simple control structure and intuitive operation interface. It focuses on realizing the coordinated work of motor drive and pressure regulation unit, simulating load impact under actual working conditions, reducing the difficulty of operation, adapting to batch test scenarios in grassroots production, and eliminating the need for automatic data analysis functions. Performance judgment can be completed through manual observation.

[0041] In this embodiment of the invention, the control interaction unit is used to send control commands and interact with the main control unit through the communication unit; the control interaction unit is a touch screen host computer, which has an operation interface, including motor control buttons, load control buttons, data recording buttons and parameter setting buttons.

[0042] In this embodiment of the invention, the main control unit is used to send corresponding drive signals to the drive unit and the pressure regulating unit through the communication unit according to the instructions of the control interaction unit, so as to control the coordinated action of the two; the main control unit is a PLC controller, which is connected to the control interaction unit, the drive unit and the pressure regulating unit through the communication unit to realize instruction transmission and status feedback.

[0043] In this embodiment of the invention, the power supply unit is used to provide the operating voltage; the power supply unit is a DC / AC module, which is used to convert the external DC24V voltage into AC380V and AC220V.

[0044] In this embodiment of the invention, the drive unit is used to receive signals from the main control unit and drive the power output unit to operate; the drive unit is a frequency converter, which is used to receive signals from the main control unit and output AC 0-380V voltage to control the operation of the power output unit.

[0045] In this embodiment of the invention, the power output unit is connected to the hydraulic circulation unit to provide power input; the power output unit is a motor.

[0046] In this embodiment of the invention, the pressure regulating unit is used to receive signals from the main control unit and regulate the pressure of the hydraulic circulation unit; the pressure regulating unit is a solenoid valve, and the communication unit is a data interaction module for realizing serial communication between the components.

[0047] In this embodiment of the invention, the hydraulic circulation unit is used to provide a pressurized environment for the power steering pump under test, simulating a durability test scenario under actual working conditions.

[0048] In embodiments of the present invention, such as Figure 2 As shown, the touchscreen host computer is developed based on embedded configuration software. The main interface is the operation interface, which includes control buttons such as "Motor Start / Stop," "Forward / Reverse," and "Load Start / Stop / Run," as well as display areas for "Product Model" and "Current Load Count." The overall layout is simple, clear, and easy to operate, with key information readily available, enabling operators to quickly and conveniently control the entire testing process.

[0049] In embodiments of the present invention, such as Figure 3 As shown, the touchscreen host computer also features a parameter setting interface. This interface allows users to input loading time, unloading time, loading count, and product model parameters, and displays the current count and date information. The parameter setting interface includes buttons such as "Click to switch forward / reverse" and "Reset count," supporting flexible parameter adjustment based on the oil pump model. The overall layout is simple, clear, and easy to operate, with key information readily available, enabling operators to quickly and conveniently control the entire testing process.

[0050] like Figure 1 The diagram shown is the system control logic diagram of the power steering pump durability control unit. It mainly achieves coordinated operation through the following two underlying logic points:

[0051] 1. System Connection Relationship: The control interaction unit is connected to the main control unit via a serial port. The main control unit is connected to the drive unit and the pressure regulating unit via serial ports. The drive unit is connected to the power output unit, and the output shaft of the power output unit is connected to the power input end of the hydraulic circulation unit. The output end of the hydraulic circulation unit is connected to the oil pump under test. The pressure regulating unit is installed in the pipeline of the hydraulic circulation unit to regulate the output pressure. The power supply unit supplies power to the entire system to ensure the normal operation of each component.

[0052] 2. Collaborative working principle: The power output unit provides continuous power to the hydraulic circulation unit, driving the oil circulation flow; the main control unit synchronously controls the pressure regulating unit to adjust the pipeline opening and change the system output pressure (such as 0-15MPa cyclic impact); the two work together to accurately simulate actual working conditions such as sharp vehicle steering (sudden pressure rise) and constant speed driving (stable pressure), providing a real pressure environment for oil pump durability testing.

[0053] Aside from complex and costly specialized equipment, the power steering pump durability control system features clear control logic, well-defined module functions, a simple communication link, high reliability, and intuitive adaptability and scalability. It is easy to understand and operate, making it convenient for personnel to learn.

[0054] Secondly, such as Figure 4 As shown, this embodiment of the invention also provides a durability test control method for a power steering pump for an automotive steering system, which employs the aforementioned durability test control system for a power steering pump for an automotive steering system and includes the following steps:

[0055] S1. The operating voltage is provided by the power supply unit, and the control interaction unit is started.

[0056] S2. Input the relevant parameters of the power steering pump under test through the control interaction unit;

[0057] S3. The power start command is issued through the control interaction unit. The main control unit controls the drive unit to operate according to the command, and the drive power output unit drives the hydraulic circulation unit to start. It is then determined whether the initial state of the system meets the test conditions.

[0058] S4. If the test conditions are met, a loading command is issued through the control interaction unit. The main control unit synchronously controls the pressure regulating unit to adjust the pressure of the hydraulic circulation unit, pressurizes the power steering pump under test, and the power output unit continuously drives the hydraulic circulation unit to start the durability test.

[0059] S5. The test may be paused or continued as needed during the test.

[0060] S6. After the set test parameters are reached, the system automatically stops pressure regulation, and the main control unit controls the power output unit and hydraulic circulation unit to stop operating.

[0061] S7. After recording the test data, remove the tested power steering pump, check its condition and record the results to complete the test.

[0062] In step S1 above, the power supply unit provides AC 380V power to the drive unit and AC 220V power to the main control unit. When the main control unit is connected to the AC 220V power supply, the power supply unit converts AC 220V to DC 24V and lights up the control interaction unit.

[0063] In step S2 above, the relevant parameters include product model, loading time, unloading time, and number of loading cycles. The product model of the power steering pump under test is input through the control interaction unit, and the parameter setting button is clicked to input test parameters such as loading time, unloading time, and number of loading cycles.

[0064] In step S3 above, the specific way to determine whether the initial state of the system meets the test conditions is as follows: observe whether the oil pressure is sufficient, whether there is oil leakage or abnormal noise. If the oil pressure is sufficient and there is no oil leakage or abnormal noise, the test conditions are met. If the liquid level is insufficient but there is no oil leakage or abnormal noise, replenish the liquid level to meet the test conditions. If there is an unsolvable abnormal situation, the system will stop automatically and the test will end.

[0065] In step S3 above, select "forward" or "reverse" for the power output unit according to the test requirements and click the corresponding button. Then click the "Power Output Unit Start" button. The main control unit sends a signal to the drive unit to drive the power output unit to operate. The power output unit drives the hydraulic circulation oil supply system to start. Observe whether the initial state of the system is normal. If the oil pressure is sufficient and there is no oil leakage or abnormal noise, proceed to step S4. If the oil level is insufficient but there is no oil leakage or abnormal noise, click the "Replenish Oil" button. If the oil level cannot be replenished, the system will automatically stop loading, and the test will end. Otherwise, continue to step S4. If the oil pressure is sufficient but there is oil leakage or abnormal noise, choose whether to proceed to step S4 according to the actual situation. If the oil pressure cannot be replenished and there is oil leakage or abnormal noise, the test cannot continue, and the system will automatically stop loading, and the test will end.

[0066] In step S5 above, when the test is paused, the pressure regulating unit stops regulating the pressure, while the power output unit continues to drive the hydraulic circulation unit; when the test is resumed, the pressure regulating unit is restarted to regulate the pressure.

[0067] In step S5 above, if it is necessary to pause the test, click the "Load Stop" button. The pressure regulating unit will stop adjusting the pressure, while the power output unit will continue to drive the hydraulic circulation oil supply system. After confirming that there are no abnormalities, click "Load Run" to continue the test.

[0068] In step S6 above, after the set number of loading times is reached, the system automatically stops pressure regulation, and the main control unit controls the power output unit and the hydraulic circulation oil supply system to stop operating.

[0069] In step S7 above, after completing the initial record, manually click the "zero button" and then remove the tested oil pumps one by one.

[0070] In step S7 above, the operator checks the appearance of the oil pump for deformation, oil leakage, and whether the parts are damaged, records the observation results, and ends the test.

[0071] The above-mentioned durability test control system and method for power steering pumps in automotive steering systems have the following advantages:

[0072] 1. Highly adaptable and versatile;

[0073] 2. Simple to operate and easy for personnel to use;

[0074] 3. Precise control and realistic simulation of working conditions;

[0075] 4. Standardized procedures and high testing efficiency;

[0076] 5. Low cost and easy to implement.

[0077] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A durability test control system for a power steering pump used in an automotive steering system, characterized in that, It includes a control interaction unit, a main control unit, a power supply unit, a drive unit, a pressure regulation unit, a power output unit, a hydraulic circulation unit, and a communication unit; The control interaction unit is used to send control commands and interact with the main control unit through the communication unit; The main control unit is used to send corresponding drive signals to the drive unit and the pressure regulating unit through the communication unit according to the instructions of the control interaction unit, so as to control the coordinated operation of the two. The power supply unit is used to provide the operating voltage; The drive unit is used to receive signals from the main control unit and drive the power output unit to operate. The power output unit is connected to the hydraulic circulation unit to provide power input to it; The pressure regulating unit is used to receive signals from the main control unit and regulate the pressure of the hydraulic circulation unit. The hydraulic circulation unit is used to provide a pressurized environment for the power steering pump under test, simulating the durability test scenario under actual working conditions.

2. The durability test control system for a power steering pump in an automotive steering system according to claim 1, characterized in that, The control interaction unit is a touch screen host computer, which has an operation interface including motor control buttons, load control buttons, data recording buttons and parameter setting buttons.

3. The durability test control system for a power steering pump in an automotive steering system according to claim 2, characterized in that, The touchscreen host computer is also equipped with a parameter setting interface, which allows users to input loading time, unloading time, number of loading attempts, and product model parameters, and displays the current number of attempts and date information.

4. The durability test control system for a power steering pump for an automotive steering system according to any one of claims 1 to 3, characterized in that, The main control unit is a PLC controller, which is connected to the control interaction unit, drive unit, and pressure regulation unit through the communication unit to realize command transmission and status feedback.

5. The durability test control system for a power steering pump for an automotive steering system according to any one of claims 1 to 3, characterized in that, The power supply unit is a DC / AC module, which is used to convert external DC24V voltage into AC380V and AC220V.

6. The durability test control system for a power steering pump for an automotive steering system according to any one of claims 1 to 3, characterized in that, The drive unit is a frequency converter, which receives signals from the main control unit and outputs AC 0-380V voltage to control the operation of the power output unit; the power output unit is a motor.

7. The durability test control system for a power steering pump for an automotive steering system according to any one of claims 1 to 3, characterized in that, The pressure regulating unit is a solenoid valve, and the communication unit is a data interaction module used to realize serial communication between the components.

8. A method for controlling the durability test of a power steering pump for an automotive steering system, characterized in that, The durability test control system for a power steering pump for an automotive steering system, as described in any one of claims 1 to 7, includes the following steps: S1. The operating voltage is provided by the power supply unit, and the control interaction unit is started. S2. Input the relevant parameters of the power steering pump under test through the control interaction unit; S3. The power start command is issued through the control interaction unit. The main control unit controls the drive unit to operate according to the command, and the drive power output unit drives the hydraulic circulation unit to start. It is then determined whether the initial state of the system meets the test conditions. S4. If the test conditions are met, a loading command is issued through the control interaction unit. The main control unit synchronously controls the pressure regulating unit to adjust the pressure of the hydraulic circulation unit, pressurizes the power steering pump under test, and the power output unit continuously drives the hydraulic circulation unit to start the durability test. S5. The test may be paused or continued as needed during the test. S6. After the set test parameters are reached, the system automatically stops pressure regulation, and the main control unit controls the power output unit and hydraulic circulation unit to stop operating. S7. After recording the test data, remove the tested power steering pump, check its condition and record the results to complete the test.

9. The durability test control method for a power steering pump for an automotive steering system according to claim 8, characterized in that, In step S2, the relevant parameters include product model, loading time, unloading time, and loading times.

10. The durability test control method for a power steering pump for an automotive steering system according to claim 8, characterized in that, In step S3, the specific method for determining whether the initial state of the system meets the test conditions is as follows: observe whether the oil pressure is sufficient, whether there is oil leakage or abnormal noise. If the oil pressure is sufficient and there is no oil leakage or abnormal noise, the test conditions are met. If the liquid level is insufficient but there is no oil leakage or abnormal noise, the test conditions are met after replenishing the liquid level. If there is an unsolvable abnormal situation, the system will automatically stop and the test will end.

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