摘要
常规PID难以满足过热度的控制要求。为提高小型冷库过热度控制品质,采用模糊PID控制对小型冷库过热度控制方法进行了改进。通过最小二乘法对基于过热度的控制模型进行了辨识,设计模糊PID控制器。仿真结果表明,相较于常规PID控制器,采用模糊PID控制方法的过热度控制系统具有更小的超调量、更强的抗干扰能力与鲁棒性,但响应速度更慢。
In order to improve the quality of small cold storage superheat control,the conventional PID is difficult to meet the requirements of superheat,and fuzzy PID control is adopted to improve the superheat control system of small cold storage.The control model based on superheat is identified through the least square method,and a fuzzy PID controller is designed.The simulation results show that compared with the conventional PID controller,the superheat control system based on the fuzzy PID control method has smaller overshoot,stronger anti-interference ability and robustness,but the response speed is slower.
作者
杨磊
马志艳
石敏
李江华
YANG Lei;MA Zhiyan;SHI Min;LI Jianghua(Agricultural Machinery Institute,Hubei Univ.of Tech.,Wuhan 430068,China;Hubei Agricultural Machinery Institute,Wuhan 430068,China)
出处
《湖北工业大学学报》
2020年第4期48-51,共4页
Journal of Hubei University of Technology
基金
“十三五”国家重点研发计划子课题(2018YFD0701002)。
关键词
小型冷库
过热度
模糊PID
最小二乘法
small cold storage
superheat
fuzzy PID
the least square method
