Abstract：In order to correct the errors causing by swinging of bearings of ABS gear parameters measurement system, the method of least square curve fitting and affine transformation of space rectangular coordinate to correct the errors are used. Firstly, the coordinate transformation matrix is derived through analyzing the method theoretically. Secondly, the mathematical model is established according to the error correction method, the transformed coordinate formula is derived and the transformed contour data coordinates are calculated through plugging the parameters of measured coordinate system into transform formula. Finally, simulation experiment was carried out with Matlab. The experiment results show the deviation between the corrected coordinate error value and the actual error value is less than 1μm. The effect of various errors in the actual measurement process is solved, the measurement accuracy is improved.
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2019, Vol. 40 
