本文建立了开式齿轮传动优化设计的数学模型,并选择相应的优化方法。若为多级传动时是将有约束的非线性规划问题构造成外点惩罚法的无约束非线性规划问题,用Powell法寻优;若为单级或二级传动时用直接法——复合形法寻优。优化过程中的整数化,可再进行减元寻优法。通过实例计算,获得成功的设计。 This paper established a mathematical model of open gear transmission optimization design, and select the appropriate optimization methods. In the case of multi-stage transmission, the constrained nonlinear programming problem is constructed as an unconstrained nonlinear programming problem with the external penalty method. Powell method is used to find the optimal solution. For the single-stage or two-stage transmission, the direct method-compound Shape optimization. Integer optimization process, you can then reduce the yuan optimization method. Through the example calculation, get the successful design.