基于S函数的时变系统仿真

为了对复杂的控制系统进行优化控制，就要对系统特性有比较清楚的了解，对系统进行仿真是常用的一种方法。Mat-Lab软件是系统仿真的优秀工具，其Simulink能仿真大多数的系统，只是有些模型Simulink并没有直接给出，例如时变系统，而S函数是扩展Simulink功能的有力工具。该文对基于S函数的时变系统仿真进行了研究，并与等效变换法进行了比较，结果证明S函数是解决时变系统仿真的有力工具。

Simulation of Time - varying System Based on S - function

It is necessary for people to know about its characteristics intensively before optimizing the complex control system. So, system simulation is a normal method to solve such a problem. Matlab is a good tool for system simulation and its component Simulink can be used in most systems. But some special systems such as time-varying system can't be simulated in it directly, thus S-Function becomes a powerful tool, which can extend the function of Simulink. In this paper, the simulation of time-varying system based on S-Function has been studied and compared with the method of equivalent conversion. The result proves that S-Function is a powerful tool for solving the problem of time-varying system simulation.