Anti-pinch car window damping simulation system and test method thereof

Abstract

The invention discloses an anti-pinch car window damping simulation system, which is characterized in that an output shaft of a motor to be tested is connected with an input end of a torque device, an output end of the torque device is connected with a load through an output shaft, the motor and the torque device are connected with power supply equipment through power lines, and a current clamp is clamped on the power line of the motor to obtain working parameters of the motor; the current clamp is connected with an oscilloscope through a signal line, and the oscilloscope displays collected parameter waveforms. When the method is used for measuring and clicking, an anti-pinch engineer can comprehensively understand the performance parameters of the motor, and can autonomously avoid the physical defects of the motor in software design after understanding the performance of the motor under the limiting condition, so that unnecessary software bug is avoided.

Description

Technical Field

[0001] The invention relates to the field of automotive electronics, and in particular to a vehicle window damping simulation test technology. Background Art

[0002] With the year-on-year development of the automobile industry, electric windows have become a standard configuration on automobiles. In order to realize the automatic closing function of electric windows, the anti-pinch function of windows has been born. For example, the public document with announcement number CN117072013A, publication date 2023-11-17, and patent name "Anti-pinch method, device, system, vehicle and storage medium for windows" discloses a kind of anti-pinch method, device, system, vehicle and storage medium for windows, wherein the method includes: obtaining the current position of the window and the current driving current of the motor that drives the window to be raised and lowered; obtaining the historical driving current of the motor at the current position without triggering the anti-pinch action of the window; controlling the anti-pinch action of the window according to the current driving current and the historical driving current.

[0003] Similar anti-pinch systems need to conduct simulation experiments on the window motors in order to achieve the anti-pinch function of the windows. The simulation experiment is to make the anti-pinch function of the windows more stable and obtain better anti-pinch performance, so a more rigorous test is conducted on the motor unit in the window system. At present, there is a lack of a simulation system that can fully measure the motor and facilitate engineers to fully understand the performance parameters of the motor. Summary of the invention

[0004] The technical problem to be solved by the present invention is to realize a system capable of measuring the damping performance of a vehicle window.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an anti-pinch window damping simulation system, the output shaft of the motor to be tested is connected to the input end of the torquer, the output end of the torquer is connected to the load through the output shaft, the motor and the torquer are connected to the power supply equipment through a power line, the current clamp is clamped on the power line of the motor to obtain the motor working parameters, the current clamp is connected to the oscilloscope through the signal line and the oscilloscope displays the collected parameter waveform.

[0006] The torque meter is used to simulate the resistance encountered by the window motor during movement. The current and the torque force encountered by the motor are collected through a current clamp and an oscilloscope, and the current output speed of the motor is obtained in real time through the torque meter.

[0007] The power supply device for the motor and the torque device is a power supply with voltage linear output regulation.

[0008] By changing the voltage input to the motor, the driving force of the motor is linearly changed to obtain the characteristic curves of the motor input voltage, input current, motor speed and motor torque under constant resistance.

[0009] The system is provided with a bracket for fixing a torquer and a load, wherein the load is on one side of the torquer and a motor damping area for embedding a motor is provided on the other side of the torquer.

[0010] A test method based on the anti-pinch window damping simulation system:

[0011] Step 1, embedding the motor to be tested into the motor damping area of ​​the motor;

[0012] Step 2: Adjust the input voltage of the motor according to the set parameters;

[0013] Step 3: After adjusting the input voltage of the motor each time, linearly adjust the output torque of the torque converter, and record the motor operating voltage, operating current, motor speed, and motor torque measured by the current clamp, and obtain the characteristic curve based on the recorded parameters.

[0014] In step 2, the input voltage parameter table of the motor is set in advance according to the motor model, and steps 2 and 3 are looped in sequence to complete the measurement process of setting the motor input voltage.

[0015] In step 3, after adjusting the output torque of the torque converter each time, the motor is allowed to idle and move at a constant speed before applying damping and torque.

[0016] In step 3, the output torque of the linear torque regulator is the torque force applied which gradually increases at intervals of 1 N*m until the motor is hard-stuck. After each measurement process of setting the motor input voltage is completed, the stop setting time is used for natural cooling of the motor.

[0017] By using the present invention to measure clicks, anti-pinch engineers can fully understand the performance parameters of the motor. After understanding the motor performance under extreme conditions, they can independently avoid the physical defects of the motor in software design, thereby avoiding unnecessary software bugs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following is a brief description of the contents expressed in each figure in the specification of the present invention:

[0019] Figure 1 This is the principle block diagram of the anti-pinch window damping simulation system. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the specific implementation methods of the present invention, such as the shape, structure, relative position and connection relationship between the various components involved, the function and working principle of each part, the manufacturing process and operation method, etc., through the description of the embodiments with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0021] This system uses a dynamic torquer to generate different damping and evaluates the mechanical characteristics of the anti-pinch window motor under different damping and different voltages. The system is equipped with a bracket for fixing the torquer and the load. The load is on one side of the torquer, and the other side of the torquer is provided with a motor damping area for embedding the motor. The output shaft of the motor to be tested is connected to the input end of the torquer, and the output end of the torquer is connected to the load through the output shaft. The motor and the torquer are connected to the power supply device through the power cord. Except for the motor to be tested, the entire system is fixed in advance. Two DC power supplies are used to power a pair of dynamic torque sensors to ensure their normal function. Secondly, to ensure the power supply of the motor, the power supply equipment needs to have a voltage linear output adjustment function to facilitate the linear adjustment of the working voltage of the two devices during measurement.

[0022] This system simulates the change of motor damping by embedding the window motor into the motor damping area and adjusting the damping output power of the dynamic torque sensor. During the test, the current clamp is clamped on the power line of the motor to obtain the motor working parameters. The current clamp is connected to the oscilloscope through the signal line and the oscilloscope displays the acquired parameter waveform. The parameter information can be recorded manually or automatically through computer equipment. The oscilloscope can record the motor power supply voltage, motor operating current, motor speed, motor real-time damping value and other data to draw the mechanical characteristic curve required for the experiment.

[0023] Test method based on the above anti-pinch window damping simulation system:

[0024] Step 1, embedding the motor to be tested into the motor damping area of ​​the motor;

[0025] Step 2: Adjust the input voltage of the motor according to the set parameters;

[0026] Step 3: After adjusting the input voltage of the motor each time, linearly adjust the output torque of the torque converter, and record the motor operating voltage, operating current, motor speed, and motor torque measured by the current clamp, and obtain the characteristic curve based on the recorded parameters.

[0027] The following test steps can be used

[0028] The motor power supply voltage is adjusted to 9V, and the motor is made to idle and move at a constant speed. Then damping is applied to make the motor rotate at a constant speed under a torque of 1N*m, and the experimental data such as motor speed and motor current are recorded. The applied torque is gradually increased at intervals of 1N*m until the motor is hard-stuck. Each time the experimental conditions are changed, the interval is more than 15 minutes to ensure that the motor can cool naturally and that the motor characteristics will not change suddenly during the test.

[0029] The motor power supply voltage is adjusted to 10V, and the motor is made to idle and move at a constant speed. After that, damping is applied to make the motor rotate at a constant speed under a torque of 1N*m, and the experimental data such as motor speed and motor current are recorded. The applied torque is gradually increased at intervals of 1N*m until the motor is hard-stuck. Each time the experimental conditions are changed, an interval of more than 15 minutes is allowed to ensure that the motor can cool naturally and that the motor characteristics will not change suddenly during the test.

[0030] The motor power supply voltage is adjusted to 11V, and the motor is made to idle and move at a constant speed. Then damping is applied to make the motor rotate at a constant speed under a torque of 1N*m, and the experimental data such as motor speed and motor current are recorded. The applied torque is gradually increased at intervals of 1N*m until the motor is hard-stuck. Each time the experimental conditions are changed, an interval of more than 15 minutes is allowed to ensure that the motor can cool naturally and that the motor characteristics will not change suddenly during the test.

[0031] The motor power supply voltage is adjusted to 12V, and the motor is made to idle and move at a constant speed. After that, damping is applied to make the motor rotate at a constant speed under a torque of 1N*m, and the experimental data such as motor speed and motor current are recorded. The applied torque is gradually increased at intervals of 1N*m until the motor is hard-stuck. Each time the experimental conditions are changed, an interval of more than 15 minutes is allowed to ensure that the motor can cool naturally and that the motor characteristics will not change suddenly during the test.

[0032] The motor power supply voltage is adjusted to 13V, and the motor is made to idle and move at a constant speed. Then damping is applied to make the motor rotate at a constant speed under a torque of 1N*m, and the experimental data such as motor speed and motor current are recorded. The applied torque is gradually increased at intervals of 1N*m until the motor is hard-stuck. Each time the experimental conditions are changed, an interval of more than 15 minutes is allowed to ensure that the motor can cool naturally and that the motor characteristics will not change suddenly during the test.

[0033] The motor power supply voltage is adjusted to 14V, and the motor is made to idle and move at a constant speed. After that, damping is applied to make the motor rotate at a constant speed under a torque of 1N*m, and the experimental data such as motor speed and motor current are recorded. The applied torque is gradually increased at intervals of 1N*m until the motor is hard-stuck. Each time the experimental conditions are changed, an interval of more than 15 minutes is allowed to ensure that the motor can cool naturally and that the motor characteristics will not change suddenly during the test.

[0034] The motor power supply voltage is adjusted to 15V, and the motor is made to idle and move at a constant speed. Then damping is applied to make the motor rotate at a constant speed under a torque of 1N*m, and the experimental data such as motor speed and motor current are recorded. The applied torque is gradually increased at intervals of 1N*m until the motor is hard-stuck. Each time the experimental conditions are changed, an interval of more than 15 minutes is allowed to ensure that the motor can cool naturally and that the motor characteristics will not change suddenly during the test.

[0035] The motor power supply voltage is adjusted to 16V, and the motor is made to idle and move at a constant speed. Then damping is applied to make the motor rotate at a constant speed under a torque of 1N*m, and the experimental data such as motor speed and motor current are recorded. The applied torque is gradually increased at intervals of 1N*m until the motor is hard-stuck. Each time the experimental conditions are changed, the interval is more than 15 minutes to ensure that the motor can cool naturally and that the motor characteristics will not change suddenly during the test.

[0036] The system has the following advantages:

[0037] The dynamic torque meter simulates the resistance encountered by the window motor during movement, and the dynamic torque sensor feeds back the current speed of the window and the torque force encountered by the motor. The experimental data is collected, and the torque-speed curve of the motor is drawn through analysis and calculation of the experimental data.

[0038] The dynamic torque meter simulates the resistance encountered by the window motor during movement, and collects the current and torque encountered by the motor through a current clamp and an oscilloscope. The experimental data is collected, and the torque motor curve of the motor is drawn through analysis and calculation of the experimental data.

[0039] The driving force of the motor can be changed by changing the voltage, and the characteristic curves of external power supply voltage, motor current, motor speed, motor torque, etc. can be theoretically plotted.

[0040] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An anti-pinch window damping simulation system, characterized in that: The output shaft of the motor to be tested is connected to the input end of the torque device, the output end of the torque device is connected to the load through the output shaft, the motor and the torque device are connected to the power supply equipment through the power line, the current clamp is clamped on the power line of the motor to obtain the motor working parameters, the current clamp is connected to the oscilloscope through the signal line and the oscilloscope displays the collected parameter waveform.

2. The anti-pinch window damping simulation system according to claim 1, characterized in that: The torque meter is used to simulate the resistance encountered by the window motor during movement. The current and the torque force encountered by the motor are collected through a current clamp and an oscilloscope, and the current output speed of the motor is obtained in real time through the torque meter.

3. The anti-pinch window damping simulation system according to claim 2, characterized in that: The power supply device for the motor and the torque device is a power supply with voltage linear output regulation.

4. The anti-pinch window damping simulation system according to claim 3, characterized in that: By changing the voltage input to the motor, the driving force of the motor is linearly changed to obtain the characteristic curves of the motor input voltage, input current, motor speed and motor torque under constant resistance.

5. The anti-pinch window damping simulation system according to any one of claims 1 to 4, characterized in that: The system is provided with a bracket for fixing a torquer and a load, wherein the load is on one side of the torquer and a motor damping area for embedding a motor is provided on the other side of the torquer.

6. A test method based on the anti-pinch window damping simulation system according to any one of claims 1 to 5, characterized in that: Step 1, embedding the motor to be tested into the motor damping area of ​​the motor; Step 2: Adjust the input voltage of the motor according to the set parameters; Step 3: After adjusting the input voltage of the motor each time, linearly adjust the output torque of the torque converter, and record the motor operating voltage, operating current, motor speed, and motor torque measured by the current clamp, and obtain the characteristic curve based on the recorded parameters.

7. The testing method according to claim 6, characterized in that: In step 2, the input voltage parameter table of the motor is set in advance according to the motor model, and steps 2 and 3 are cycled in sequence to complete the measurement process of setting the motor input voltage.

8. The testing method according to claim 6, characterized in that: In step 3, after adjusting the output torque of the torque converter each time, the motor is allowed to idle and move at a constant speed before applying damping and torque.

9. The testing method according to claim 6, characterized in that: In step 3, the output torque of the linear torque regulator is the torque force applied which gradually increases at intervals of 1 N*m until the motor is hard-stuck. After each measurement process of setting the motor input voltage is completed, the stop setting time is used for natural cooling of the motor.

Images