一种新型模糊PID控制的变频恒压供水系统

提出了一种新型的变频恒压供水系统，在该系统中采用了模糊比例、积分、微分（模糊PID）控制，通过模糊控制器浮动迁移受控对象的设定值，并把迁移后的设定值引入到PID运算中，使系统既有模糊控制器的优点，又具有PID调节器的特点。     

A Kind of Synthetical Fuzzy Control System of Carburization

Carburization is a complex manufacturing process with serious disturbance and time delay,which is multi-variable and uncertain.It is difficult to set up an exact mathematic model.Moreover,by means of conventional control methods and experience,satisfying control result can't be obtained.In this paper,according to the characteristic of controlled-object,Fuzzy control method has been chosen to design a Fuzzy-PI controller and a mixed-PID Fuzzy controller.The result of simulation shows that the robust performance and control result of the new Fuzzy controllers is better than the conventional PID controller.The overshoot is smaller.It is helpful to improve the quality of carburizing workpieces.     

基于模糊控制的果蔬气调保鲜库的设计

设计以单片机为控制核心,采用模糊控制算法的气调保鲜库控制系统的工作原理。讨论在控制系统中,如何运用模糊控制的理论来建立控制规则,实现对温度、湿度、乙烯浓度等参数进行实时显示与控制等,并通过MATLAB程序的仿真来说明设计的可操作性及合理行。