非线性-时延系统控制律研究及可视化仿真

三容水箱是较为典型的非线性、时延对象,它不仅提供了面向教学的常用控制算法验证实验,也为先进控制理论的研究与实现提供了方便的实验环境.论文根据已有的三容水箱数学模型,研究了经典PID控制推荐参数的得出,史密斯预估和模糊控制对大惯性、大迟滞系统的补偿,并利用MATLAB对于PID控制,史密斯预估以及模糊控制进行仿真.通过对仿真结果的分析,本文发现对于非线性、大惯性、大延迟的系统史密斯预估和模糊控制的效果要比PID控制更好,同时史密斯预估的控制效果要好于模糊控制.最后利用MATLAB GUI设计可视化界面显示上三种仿真结果,同时GUI能实现输出动态响应曲线和显示相应水箱液位控制实时动画,以及绘制根轨迹和伯德图等功能.

Nonlinear and Time Delay System Control Law Study and Visualization Simulation

Three water tank systems with nonlinear characteristics of big inertia big delay, it not only provides the common control algorithm verification and experiment for teaching, but also provides a convenient experimental environment for advanced control theory. This paper according to the mathematical model of the existing 3 water tank, the classical PID control recommended parameters, Smith prediction and fuzzy control for large inertia big hysteresis compensation system are studied, and using MATLAB for PID control, Smith forecast and fuzzy control are simulated. Analysis the results of simulation indicates that Smith prediction and fuzzy control are better than PID control, mean while Smith prediction control is better than fuzzy control. At last, by using MATLAB GUI, visual interface shows three kinds of simulation results is designed, at the same time, the GUI can realize the dynamic response curves of output and display the corresponding water tank level control real-time animation, and map root locus and Bird, and other functions.