摘要
雾化喷嘴供气压力系统难以用精确的数学模型来表示,并且具有一定的非线性和时变性的特点,运用常规PID控制或者模糊控制方法难以对其进行有效的控制。为了提高控制系统的动态和稳态性能,结合常规PID控制与模糊控制的特点,采用了模糊PID复合控制方法,在偏离工作点较远的区域以模糊控制为主,工作点附近主要运用PID对雾化喷嘴压力系统进行控制。仿真与实验结果表明,该模糊控制器可以有效地将雾化喷嘴供气压力控制在稳定设定值上,并且动态响应快,稳态误差小,具有很好的稳定鲁棒性。
The pressure supply system of the atomizing nozzle, being characterized by nonlinear and timevarying, is rather difficult to be described by the accurate mathematical model. Effective control of the system is hard to realize by using normal PID or fuzzy control alone. In this paper, an approach of fuzzy-PID hybrid control is presented by utilizing the advantages of both normal fuzzy and PID controller for the purpose of improving the dynamic and steady state performance of the control system. Thus, the control of the pressure supply system of the atomizing nozzle is executed in such a way that in the region further away form the working point, it mainly depends on fuzzy control, and near the working point, it mainly depends on PID control. The simulation and experiment show that the hybrid controller is able to control the supplying pressure at the preset value efficiently. It features quick response, high steady state accuracy and perfect steady robust performance.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2007年第3期100-103,共4页
Journal of Textile Research
基金
浙江省自然科学基金资助项目(M503209)
关键词
雾化喷嘴
模糊PID复合控制
电气比例阀
仿真
atomizing nozzle
fuzzy-PID hybrid control
dectropneumatical propotional valve
simulation
