啤酒杀菌模糊PID温度控制器设计与仿真

Design and Simulation of Fuzzy PID Temperature Controller for Beer Sterilization

为了使啤酒保持营养、保持啤酒新鲜度、提高啤酒储存周期,通常在啤酒灌装之前对其进行高温杀菌处理。啤酒高温处理系统是一个具有非线性、时变性、参数不确定性等特点的复杂系统,传统PiD控制通常很难达到理想的控制效果。为了解决上述问题,提出了一种将智能模糊控制理论与PiD相结合的自适应控制算法,通过模糊控制方法对Pi D控制器参数进行在线自适应调整。最后利用Matlab仿真软件进行了仿真分析,仿真结果表明:模糊Pi D控制方法相比于传统Pi D控制方法超调量更小,调节周期更短,且拥有一定的抗干扰能力。

In order to keep beer nutritious,keep beer fresh and improve beer storage period,high temperature sterilization is usually carried out before beer filling.Beer high temperature processing system is a complex system with the characteristics of non-linearity,time-varying and parameter uncertainty.Traditional PID control is usually difficult to achieve the desired control effect.In order to solve the above problems,this paper proposes an adaptive control algorithm which combines the intelligent fuzzy control theory with the PID.The parameters of the PID controller are adjusted on-line by the fuzzy control method.Finally,the simulation analysis is carried out by using the simulation software of Matlab.The simulation results show that the fuzzy PID control method has smaller overshoot,shorter adjustment period and anti-interference ability than the traditional PID control method.