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基于Simulink的锅炉给水非线性控制系统
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Abstract:
本文研究设计的非线性PI控制器是采用了在传统线性PI控制器基础上增加双曲余弦函数增益，两者构成新非线性PI控制器。再借助Simulink仿真软件对所设计的非线性控制系统进行稳定性、准确性、快速性方面的性能分析，并对锅炉给水非线性PI控制系统与锅炉给水线性PI控制系统进行了仿真比较，结果表明非线性PI控制器对典型热力过程控制系统的动态性能有显著改善。
The nonlinear PI controller designed in this paper is based on the traditional linear PI controller to increase the gain of hyperbolic cosine function, which constitutes a new nonlinear PI controller. Then the stability, accuracy and rapidity of the designed nonlinear control system are analyzed by Simulink simulation software, and the nonlinear PI control system of boiler feed water is simulated and compared with the linear PI control system of boiler feed water. The results show that the non-linear PI controller can significantly improve the dynamic performance of a typical thermal process control system.
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