Simple function testing device for electronic power-assisted control unit

Abstract

The invention provides a simple and cheap testing device for an electronic power-assisted control steering control unit. The simple function testing device is mainly applied in a batch production testing step of electronic power-assisted steering controllers. The simple and cheap testing device can be used for testing batch characteristic consistency of electronic control units in electronic power-assisted steering systems. A motor with a characteristic which is same with that of a testing motor is used as a loading motor. The anode of the loading motor is connected with the cathode of the loading motor in a shortcircuit manner. Through driving the testing motor to drag the loading motor for rotating and acquiring an induced current value of the loading motor, a force characteristic consistency result of the product is finally acquired through a mean square deviation between the current value and a standard value.

Description

[0001] 1. Technical field [0002] The device of the invention is mainly used in the production and detection link of the electric power steering controller. The electric power steering controller is mainly used in the electronic power steering system of passenger cars or commercial vehicles. It is the electronic control unit of the system, and its safety and reliability determine the stability and safety of the system. In mass production, it is very important to test the technical status of each controller, but the conventional test device is complex in structure and expensive. The invention adopts a low-cost scheme, the system is simple and reliable, and can be used for the factory inspection of the electronic steering controller. [0003] 2. Background technology [0004] Electronic power steering system: The electronic power steering system is the mainstream power steering method for passenger cars at present. Its function is to provide the driver with steering assistance ...

AI Technical Summary

Problems solved by technology

[0007] In order to detect the above two functions, the traditional method uses two sets of motor control systems, clamping the electronic power steering system under test in the middle, controlling the rotation of the steering wheel through the first set of motor systems to drive the electronic power steering system under test, and the second set of motor simulation The load is used to measure the output torque of the electronic power steering system under test. The system has a complex structure and requires two sets of inter-shaft connection devices, and high-performance motors and controllers are required. The price is high, and the linkage of multiple sets of motor control systems is also prone to coupling resonance.

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