模糊PID控制的柴油机调速系统仿真

摘要

PID控制是生产过程中应用最广泛的控制方式,但它对含变化参数的模型控制效果不理想.为了使舰船柴油机适应不断变化的工作环境,在传统PID控制的柴油机调速系统的基础上加入模糊控制环节,对PID参数进行在线整定.详细介绍了模糊PID算法在柴油机调速系统中的应用以及模糊控制器的设计,并通过MATLAB对模糊PID柴油机调速系统进行仿真,仿真结果表明,模糊自整定PID控制系统可以改善系统的动态特性,减小系统的振荡,提高系统的响应速度.%PID control method is the most widely used control method in production process, but the control result is not ideal when it is used in the model with variable parameters.In order to adapt the diesels of vessels to the variable working circumstance, in this paper we add fuzzy control to traditional PID diesel speed control system, which can adjust the PID parameters on line.We introduce the application of fuzzy-PID algorithm in diesel speed control system and the design of fuzzy controller in detail.Moreover,through the MATLAB the fuzzy PID diesel speed control system is simulated,the result concluded shows that the self-tuning fuzzy-PID can improve the dynamic characteristics of the system,decrease system oscillation,and increase system response speed.