本文提出了多级齿轮传动动态仿真技术,重点论述了系统动力学模型的建立和运动微分方程的求解方法。由于该运动方程是多自由度时变非线性方程组,用一般方法很难求解,本文采用模态分析法和状态空间法相结合的方法进行求解。在此基础上,建立了齿轮传动动态分析仿真系统。以三级斜齿圆柱齿轮传动系统为例,对其进行了动态仿真,分析结果是令人满意的。 In this paper, the dynamic simulation technology of multi-stage gear transmission is put forward, and the establishment of system dynamics model and the method of solving differential equation are mainly discussed. Because the equation of motion is a multi-degree-of-freedom nonlinear time-varying system, it is very difficult to solve it by the general method. In this paper, the modal analysis and the state space method are combined to solve the problem. On this basis, the establishment of a dynamic analysis of gear transmission simulation system. Taking the three-stage helical gear transmission system as an example, the dynamic simulation is conducted and the result of the analysis is satisfactory.