A double-eGR valve DC brush motor endurance test control system

Abstract

The utility model discloses a kind of double EGR valve DC brush motor endurance test control system, including the test host for testing DC motor, for controlling the main controller of DC motor testing, for powering the adjustable power supply of main controller and for setting the host computer of operating parameter so that test motor runs according to set value, the output end of adjustable power supply is connected the power input end of main controller, and main controller is electrically connected with test host and host computer respectively.The utility model provides a kind of double EGR valve DC brush motor endurance test control system, can be separately controlled to DC brush motor endurance test, and simple structure, component is basically simple combination, using the mode of two motor interaction force simulation load, it is simultaneously carried out load endurance test to two test motors under various severe conditions, simultaneously reduce the waste of EGR valve spare parts, and improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of motor durability testing technology, and more specifically to a dual EGR valve DC brushed motor durability testing control system. Background Technology

[0002] With the increasing application of hybrid vehicles, EGR valves have become widely used. Considering both component price and lifespan, most EGR valves currently use DC brushed motors. As a crucial component of EGR valves, the DC brushed motor requires frequent batch durability testing to ensure its reliability and consistency.

[0003] Common durability tests include high temperature operation tests, low temperature operation tests, and high and low temperature shock tests. A common testing method is to directly install the motor into the EGR valve product for control testing. However, because this is a batch and long-term test, it will waste other parts of the EGR valve. If the motor is tested alone, there is no suitable load, especially a load that can work normally under various harsh conditions (including low temperature, high temperature, and alternating high and low temperatures). Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a dual EGR valve DC brushed motor durability test control system to solve the problems in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0006] A dual EGR valve DC brushed motor durability test control system includes a test host for testing the DC motor, a main controller for controlling the testing of the DC motor, an adjustable power supply for supplying power to the main controller, and a host computer for setting operating parameters so that the test motor runs according to the set values. The output terminal of the adjustable power supply is connected to the power input terminal of the main controller, and the main controller is electrically connected to both the test host and the host computer.

[0007] To further optimize the technical solution, the test host includes a base with a motor bracket on it. The motor bracket has two grooves for placing the test motor. A motor bracket bolt for fixing the test motor is mounted on the top of the motor bracket via a motor bracket fixing nut. The test motor is electrically connected to the main controller via a test motor control interface. A test bracket main gear is mounted on the inner center of the motor bracket via a main gear shaft. Gears connecting two test motors are meshed on both sides of the test bracket main gear. A magnet that rotates with the test bracket main gear is mounted on the outer center of the test bracket main gear. An angle sensor for detecting the magnet's rotation angle and number of rotations is mounted on the front end of the magnet via a sensor bracket. The angle sensor is electrically connected to the main controller via a sensor interface.

[0008] To further optimize the technical solution, the corner sensor is provided with a corner sensor protective adhesive on its periphery for protection.

[0009] To further optimize the technical solution, the main controller includes a housing. The housing is equipped with a run button to start the main controller, a buzzer for issuing abnormal alarms, and a display screen for displaying test status and fault information. The side of the housing is equipped with a sensor connection interface and a test motor interface for connecting to the test host, a controller power interface for connecting to an adjustable power supply, and a controller communication interface for connecting to a host computer. The controller is installed inside the housing. The output of the run button is connected to the input of the controller. The output of the controller is connected to the input of the buzzer and the display screen, respectively. The controller is electrically connected to the sensor connection interface, the test motor interface, and the controller communication interface, respectively. The controller power interface is connected to the power input of the controller.

[0010] To further optimize the technical solution, the main controller is also equipped with an indicator light for indicating abnormal operation of the test motor, and the input terminal of the indicator light is connected to the output terminal of the controller.

[0011] The technological advancements achieved by this utility model are as follows, due to the adoption of the above technical solutions.

[0012] This utility model provides a dual EGR valve DC brushed motor durability test control system, which can independently control the durability test of DC brushed motors. It has a simple structure with basic components that are simple combinations. It uses the interaction force of two motors to simulate the load, enabling simultaneous load durability testing of two test motors under various harsh conditions. It also reduces the waste of EGR valve components and improves testing efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a schematic diagram of the structure of the test host of this utility model; Figure 3 This is a schematic diagram of the structure and installation of the test host of this utility model; Figure 4 This is a schematic diagram of the main controller of this utility model.

[0014] The components include: 1. Test host, 11. Base, 12. Motor bracket, 13. First test motor, 14. Second test motor, 15. Motor bracket bolt, 16. Motor bracket fixing nut, 17. Test bracket main gear, 18. Main gear shaft, 19. Magnet, 110. First test motor gear, 111. Second test motor gear, 112. Angle sensor, 113. Angle sensor protective adhesive, 114. Sensor bracket, 115. First test motor control interface, 116. Second test motor control interface, and 117. Sensor interface. 2. Main controller; 21. Housing; 22. Run button; 23. Indicator light; 24. Buzzer; 25. Display screen; 26. Sensor connection interface; 27. Test motor interface; 28. Controller power interface; 29. ​​Controller communication interface; 3. Adjustable power supply; 4. Host computer. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] A dual EGR valve DC brushed motor endurance test control system, combined with Figure 1 As shown, the system includes a test host 1, a main controller 2, an adjustable power supply 3, and a host computer 4. The test host 1 is used to test the DC motor, the main controller 2 is used to control the testing of the DC motor, the adjustable power supply 3 is used to power the main controller, and the host computer 4 is used to set the operating parameters so that the test host operates according to the set values. The input terminal of the adjustable power supply is connected to the 220V AC mains power, and the output terminal of the adjustable power supply is connected to the power input terminal of the main controller. The main controller 2 is electrically connected to the test host 1 and the host computer 4 respectively.

[0017] The test host 1 includes a base 11, on which a motor bracket 12 is provided. The motor bracket 12 has two grooves for placing a first test motor 13 and a second test motor 14, respectively. A motor bracket bolt 15 is provided above the motor bracket 12 to fix the two test motors. The motor bracket bolt 15 is fixed on the motor bracket 12 by a motor bracket fixing bolt 16. The first test motor 13 and the second test motor 14 are electrically connected to the main controller 2 through a first test motor control interface 115 and a second test motor control interface 116, respectively. The control signals of the main controller are received through the test motor control interface, so that the test motors run according to the desired duty cycle and direction.

[0018] A test bracket main gear 17 is mounted on the inner center of the motor bracket base 12 via a main gear shaft 18. A first test motor gear 110 and a second test motor gear 111 mesh on either side of the test bracket main gear 17. The first test motor gear 110 is connected to the motor shaft of the first test motor 13, and the second test motor gear 111 is connected to the motor shaft of the second test motor 14. A magnet 19 is mounted on the outer center of the test bracket main gear 17, and the magnet 19 rotates with the test bracket main gear 17. An angle sensor 112 is mounted on the front end of the magnet 19 via a sensor bracket 114 to detect the rotation angle and number of rotations of the magnet 19. The angle sensor 112 is electrically connected to the main controller 2 via a sensor interface 117 to provide power to the angle sensor and output sensor signals.

[0019] Angle sensor 112 is provided with an angle sensor protective adhesive 113 around its periphery to protect the angle sensor 112 and ensure that no water vapor enters the surface of the angle sensor 112 under conditions such as high temperature, low temperature, and high and low temperature.

[0020] The main controller 2 includes a housing 21, on which are mounted a run button 22, an indicator light 23, a buzzer 24, and a display screen 25. The run button 22 is used to start the main controller. The indicator light 23 illuminates when an abnormal operation of the test motor is detected. The buzzer 24 sounds when the indicator light is on to remind the test personnel to handle the situation as soon as possible. The display screen 25 is used to display the current test status and fault information. The side of the housing 21 is provided with a sensor connection interface 26, a test motor interface 27, a controller power interface 28, and a controller communication interface 29. The sensor connection interface 26 connects to the sensor interface on the test host 1 to provide power and signal input for one or more sensors. The test motor interface 27 connects to the test motor interface on the test host 1 to output one or more test motor control signals. The controller power interface 28 connects to the adjustable power supply 3 to charge the main controller. The controller communication interface 29 connects to the host computer 4 to establish communication between the main controller and the host computer. The housing 21 contains a controller. The output of the run button is connected to the input of the controller. The output of the controller is connected to the input of the indicator light, buzzer and display screen respectively. The controller is electrically connected to the sensor interface, the test motor interface and the controller communication interface respectively. The controller power interface is connected to the power input of the controller.

[0021] The adjustable power supply 3 is used to control the power supply of the main controller 2, enabling the main controller 2 to operate normally, control the test motor according to the set data, and receive signals from the angle sensor. The adjustable power supply 3 is a commercially available regulated power supply that can adjust the output voltage according to actual usage requirements, providing a stable DC voltage to the main controller.

[0022] The host computer 4 is used to communicate with the main controller 2 and set the working parameters to the main controller before operation so that the test motor runs according to the set values.

[0023] In this invention, during testing, the main controller is connected to one or more test hosts via test motor control interfaces and sensor interfaces. An adjustable power supply powers the main controller through its power interface. The host computer is connected to the main controller via a controller communication interface. During operation, relevant working parameters are set via the host computer. For example, different duty cycles and directions are set for the first and second test motors, and they are alternately switched to ensure that the first and second test motors operate under load through the transmission of the main gear, more closely resembling actual usage conditions. Simultaneously, two motors can be tested, and they can act as loads for each other. Furthermore, the main controller can analyze the motor duty cycle control and the angle signal returned by the angle sensor. Based on whether the durability test of the test motor is normal, it controls the indicator lights and buzzers to operate accordingly. After setting the parameters, the host computer can be moved or used continuously as needed to record test data.

[0024] Assume a durability test is required on the first and second test motors, with the motors switching between forward and reverse directions every 10 seconds. Simultaneously, the test motors will be subjected to a simulated 20% load, and the ambient temperature will be -40°C. The first and second test motors are correctly placed on the motor bracket, ensuring their gears mesh with the main gear of the test bracket. The motor bracket is then secured to the bracket using the mounting nuts, ensuring the motors remain in place during the durability test. After the motors are secured, the test unit is placed in a high-low temperature chamber. Test leads are used to connect the sensor interface and the test unit interface on the test unit to the main controller. The main controller is then connected to an adjustable power supply and a host computer for power supply and communication. The host computer is used to set the two motors to operate under 20% duty cycle load and normal control, with the motors rotating in opposite directions (i.e., after the main gear force reverses the direction, the motor under normal control will have a 20% load in the opposite direction), switching every 10 seconds. After setting the parameters, save them, and the relevant parameters will be entered into the main controller's memory. Set the high and low temperature chamber temperature to -40℃. After the temperature is reached, click the motor host computer's run button or the main controller's run button. The main controller will then control the first and second test motors to perform durability tests. Since the two motors are set to 20% duty cycle load and normal control rotation respectively, and the set directions are opposite, and the two motors switch directions every 10 seconds, the two motors will act as the 20% duty cycle load application motor once every 10 seconds, and as the normal control test motor once every 10 seconds.

[0025] During testing, the rotation sensor detects the rotation of the main gear of the test stand. If the motor malfunctions during testing, the main controller identifies the abnormal rotation of the main gear or the abnormal motor duty cycle and activates the indicator lights and buzzer. In one or more test sets, the display screen accurately indicates which motor is malfunctioning and the cause. Finally, depending on the testing needs, the host computer can be retained for test data recording, or the host computer can be removed without interrupting the main controller's operation. In the event of a power outage, after power is restored, the set parameters are still in the main controller's memory, so pressing the run button will allow the main controller to continue controlling the test.

Claims

1. A durability test control system for a dual EGR valve DC brushed motor, characterized in that: It includes a test host (1) for testing DC motors, a main controller (2) for controlling the testing of DC motors, an adjustable power supply (3) for supplying power to the main controller, and a host computer (4) for setting working parameters so that the test motor runs according to the set values. The output of the adjustable power supply is connected to the power input of the main controller. The main controller (2) is electrically connected to the test host (1) and the host computer (4) respectively.

2. The dual EGR valve DC brushed motor durability test control system according to claim 1, characterized in that: The test host (1) includes a base (11), on which a motor bracket seat (12) is provided. The motor bracket seat (12) has two grooves for placing the test motor. A motor bracket bolt (15) for fixing the test motor is provided above the motor bracket seat (12) through a motor bracket fixing nut (16). The test motor is electrically connected to the main controller (2) through the test motor control interface. A test bracket main gear (17) is provided on the inner center of the motor bracket seat (12) through a main gear shaft (18). Gears for connecting two test motors are meshed on both sides of the test bracket main gear (17). A magnet (19) that rotates with the test bracket main gear is provided on the outer center of the test bracket main gear (17). An angle sensor (112) for detecting the rotation angle and number of turns of the magnet (19) is provided on the front end of the magnet (19) through a sensor bracket (114). The angle sensor (112) is electrically connected to the main controller (2) through a sensor interface (117).

3. The dual EGR valve DC brushed motor durability test control system according to claim 2, characterized in that: The corner sensor (112) is provided with a corner sensor protective adhesive (113) on its periphery for protecting the corner sensor (112).

4. The dual EGR valve DC brushed motor durability test control system according to claim 1, characterized in that: The main controller (2) includes a housing (21). The housing (21) is provided with a run button (22) to start the main controller, a buzzer (24) for issuing an abnormal alarm, and a display screen (25) for displaying test status and fault information. The side of the housing (21) is provided with a sensor connection interface (26) and a test motor interface (27) for connecting to the test host (1), a controller power interface (28) for connecting to the adjustable power supply (3), and a controller communication interface (29) for connecting to the host computer (4). The housing (21) is provided with a controller. The output end of the run button is connected to the input end of the controller. The output end of the controller is connected to the input end of the buzzer and the display screen respectively. The controller is electrically connected to the sensor connection interface, the test motor interface and the controller communication interface respectively. The controller power interface is connected to the power input end of the controller.

5. The dual EGR valve DC brushed motor durability test control system according to claim 4, characterized in that: The main controller (2) is also equipped with an indicator light (23) for indicating abnormal operation of the test motor. The input end of the indicator light is connected to the output end of the controller.

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