含有凸轮机械的机电系统建模与仿真

Modeling and Simulation of Electromechanical System with Cam Mechanism

凸轮机构由于其优良的工作性能而被广泛用于高精度往复运动系统中。但由于它的变转动惯量、变加速度、震动、间隙等非线性动力学特性，给凸轮机构的稳速控制带来了很大难度。为便于对含有凸轮机构的机电系统的控制系统的研究，本文针对负载、转动惯量、间隙等影响控制性能的参数，以具有正弦加速运动规律的改进型等速运动凸轮廓线的对心凸轮机构为例，给出了凸轮机构的建模、仿真的公式，并给出了仿真程序设计方法。这一模型从控制系统研究需要出发，适合对含有凸轮机构的机电控制系统进行仿真研究。仿真结果表明所建的模型符合实际情况，是正确的。

Cam Mechanism is wide used in many high accuracy movement systems because of its excellent characteristics. This paper introduces the modeling method of electromechanical system with cam mechanism and the designs of simulation program based on discrete method. The model considers most of the nonlinear characteristics, such as the changing load torque, the changing moment of inertia and the transaction clearance between the cam and the slave mechanism. It can be used in the studying of control strategy of the electromechanical systems with cam mechanism. The simulating results convince that the model given is correct.