机构运动有限差分法分析的精度与增量值

The Accuracy and Increment of Finite Differece Method in Kinematic Analysis of Mechanisms

本文讨论了用有限差分法进行机构运动分析的精确度问题,并根据机构的运动和动力特性、所要求的计算精确度以及计算机的运算精度,分析了有限差分数值求导公式中增量值的确定,给出了合适的增量值。

The paper discusses the accuracy of finite difference method used for kinematic analysis of mechanisms. The determination of appropriate increment used in finite difference equations is also analysed according to the kinematic and dynamic characteristics of mechanisms, the accuracies required, and the accaracy of computer calculations. The values of appropriate increment arc given in this paper.