提出了一种基于多次性态模型的电动三轴运动仿真转台框架结构参数优化设计的研究方法。优化的目标函数为框架转动惯量 ,约束函数为框架的部分结构参数和最低固有频率。在优化分析过程中采用多次性态模型来代替原有限元软件进行重分析 ,在保证优化效果的前提下大大提高了优化效率。 A research method based on multi-state model is proposed to optimize the structural parameters of the three-axis motion simulation turntable. The objective function of optimization is the moment of inertia of the frame, the constraint function is the partial structure parameter and the lowest natural frequency of the frame. In the process of optimization analysis, the multiple-state model is used instead of the original finite element software for reanalysis, which greatly improves the optimization efficiency under the premise of ensuring the optimization effect.