In order to solve the problems of low transmission efficiency and compact structure is not enough for cycloid reducer

through its transmission efficiency formula derivation and study on design variables and constraints

the optimum design model is established by taking the objective function of smallest volume and highest efficiency.The genetic optimization program is developed by using the genetic toolbox of MATLAB software.Through comparing the optimization results with traditional design results

its volume is decreased of 16.6%

and its efficiency is increased of 2.08%.The effect is significant

a certain theory and method is provided for the optimized design of cycloid reducer.