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近似线性曲柄滑块机构是仪表中常用的传动放大机构，设计时，它的两个主要质量指标──机构的非线性误差和压力角应该满足设计要求。已有的该机构的CAD文献，只能保证非线性误差一个质量指标满足设计要求，而得到的压力角则偏大，不能保证机构有最佳的运动灵活性。本文提出的优化方法，可同时保证机构的非线性误差和压力角两个质量指标均满足设计要求，即使用本方法设计出的机构不但非线性误差最小，而且机构运动灵活性最佳，从而弥补了已有方法之不足
Approximate linear crank slider mechanism is commonly used in the instrument drive amplification mechanism, its design, its two main quality indicators ─ ─ institutions of non-linear error and pressure angle should meet the design requirements. Existing CAD documents of this organization can only ensure that a quality index of nonlinear error meets the design requirements while the pressure angle obtained is too large to guarantee the best movement flexibility of the mechanism. The optimization method proposed in this paper can ensure that both the nonlinear error and the pressure angle of the mechanism meet the design requirements at the same time. That is to say, the mechanism designed by this method not only has the lowest nonlinear error but also has the best movement flexibility to make up The existing method is inadequate