介绍了汽车转向轮侧滑量测量的必要性和基本测量原理，根据其基本原理设计了测量系统的硬件和软件；

The necessary to measure the automobile directive wheel sliding and the theory of measuring are described. The hardware and software of measuring system based on the theory are designed.

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前轮摆振是指汽车在平坦的路面上直线行驶时，转向轮以一定的幅度和频率绕主销持续振动的现象。

Front wheel shimmy is the phenomenon that steering wheels vibrate around king-pin axis with a certain amplitude and frequency when the vehicle travels in a straight road.

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因此在此类电动汽车的设计中应当充分考虑对变速或转向时各轮的转矩加以控制，以提高操控性能。

Therefore in the process of speed changing or steering, the torque control for each wheel should be taken into consideration to improve the controllability of vehicle.

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