中文摘要：

在给定的设计要求范围内，希望设计出的机构具有最优的有效力传动性能．通过对曲柄滑块机构的几何关系和工作行程传动角的分析，确定了曲柄滑块机构的设计变量和工作行程最小传动角公式，建立了以工作行程最小传动角最大为目标的多维变量非线性优化数学模型，并给出算例，通过对比计算验证了提出的传动角最优的曲柄滑块机构多维变量优化设计方法．在行程速比系数、滑块行程和偏距等没有精确要求的情况下，为提高曲柄滑块机构有效的力传动性能，提供了一种实用的方法．

英文摘要：

Within the given design range of requirements, mechanisms to be designed are required have most effective force transmission performance. The independent parameters and the working stroke minimum transmission angle formula of slider-crank mechanisms were determined by investigating the geometrical relations and the working stroke transmission angle of slider-crank mechanisms. Based on all above, the mathematical model of nonlinear multi-variable optimization design which maximizes the minimum transmission angle of working stroke as objective function was established. And an example was given through a contrast result, the presented transmission angle-oriented multi- variable optimized design method of slider-crank mechanism was validated. Under the situation of having no precision requirements about advance- to return- time ratio, slider stroke and offset distance etc. , a useful method was provided in order to improve the effective force transmission performance of slider-crank mechanism .