关键词: 新能源汽车；动力转向；实验台；性能检测

Abstract: In order to test the interrelationship among the input torque of the steering wheel, vehicle speed and output torque of the power steering system of the electric power steering system of new energy vehicles, this article has developed a corresponding experimental platform for the parameter test of the performance of the power steering system of new energy vehicles. It mainly studies the current and torque output by the power steering motor of the electric power steering system under different vehicle speeds and resistances, and the interrelationships among several of them. The experimental bench mainly verifies that it is mainly applied in the teaching of new energy vehicle training projects and the testing of performance parameters of power steering systems. It is verified through this test bench that under the condition of a certain vehicle speed, the smaller the rotation angle of the steering wheel, the smaller the steering resistance given by the ground, and the steering assist output by the steering system should increase slowly. Under the condition of a constant steering resistance moment, the smaller the vehicle speed, the greater the torque required for power assistance, and the smaller the torque input from the steering wheel. Conversely, the greater the speed, the smaller the torque required for assistance, and the greater the torque input from the steering wheel. The experimental results are consistent with the control theory of the electric power steering system.

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