阀控给水系统的流量跟踪控制
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摘要
为实现阀控给水系统的流速在恒压差情况下的精确跟踪控制,以一个阀控给水系统为研究对象,考虑离心泵及调节阀的非线性特点,建立了给水系统的数学模型;随后,为了克服大口径流量调节阀的响应滞后,提出了流量跟踪的Smith预估PID控制策略;最后,对所设计的流量跟踪系统进行了仿真和实验。
In order to precisely track and control the flow velocity of the valve-controlled water supply system under the condition of constant pressure difference,a mathematical model of water supply system was built by taking a valve-controlled water supply system as the research object and considering the nonlinear characteristics of centrifugal pump and valve.Subsequently,a Smith predictive PID control strategy was proposed to overcome the response lag of large diameter flow control valve.Finally,the system was simulated.
In order to precisely track and control the flow velocity of the valve-controlled water supply system under the condition of constant pressure difference,a mathematical model of water supply system was built by taking a valve-controlled water supply system as the research object and considering the nonlinear characteristics of centrifugal pump and valve.Subsequently,a Smith predictive PID control strategy was proposed to overcome the response lag of large diameter flow control valve.Finally,the system was simulated.
引文
[1]汪成文,尚耀星,焦宗夏,等.阀控电液位置伺服系统非线性鲁棒控制方法[J].北京航空航天大学学报,2014,40(12):1736-1740.
[2]贺昌海,雷川华,周小平,等.模型试验流量与水位自动控制系统研制[J].长江科学院院报,2007,24(3):72-74.
[3]Gaurav K A.Comparison between conventional PID and fuzzy logic controller for liquid flow control:performance evaluation of fuzzy logic and PID controller by using MATLAB/Simulink[J].International Journal of Innovative Technology and Exploring Engineering,2012,1(1):84-88.
[4]陈明新,唐铃凤,胡建.基于模糊PID控制的泵流量控制系统研究[J].新乡学院学报,2014,31(4):36-40.
[5]刘英杰,徐兵,杨华勇,等.电液比例负载口独立控制系统压力流量控制策略[J].农业机械学报,2010,41(5):182-187.
[6]田嘉猷.离心泵流量-扬程特性曲线方程的计算[J].铁道标准设计,1985(8):27-30,7.
[7]付卫东,袁修干,黄本诚,等.调节阀流量的计算方法[J].阀门,1999(1):4-6.
[8]陈垒.连续系统的传递函数模型辨识[D].无锡:江南大学,2012.
[9]李康康.主机冷却水系统优化设计及其温度智能控制的研究[D].武汉:武汉理工大学,2012.
[2]贺昌海,雷川华,周小平,等.模型试验流量与水位自动控制系统研制[J].长江科学院院报,2007,24(3):72-74.
[3]Gaurav K A.Comparison between conventional PID and fuzzy logic controller for liquid flow control:performance evaluation of fuzzy logic and PID controller by using MATLAB/Simulink[J].International Journal of Innovative Technology and Exploring Engineering,2012,1(1):84-88.
[4]陈明新,唐铃凤,胡建.基于模糊PID控制的泵流量控制系统研究[J].新乡学院学报,2014,31(4):36-40.
[5]刘英杰,徐兵,杨华勇,等.电液比例负载口独立控制系统压力流量控制策略[J].农业机械学报,2010,41(5):182-187.
[6]田嘉猷.离心泵流量-扬程特性曲线方程的计算[J].铁道标准设计,1985(8):27-30,7.
[7]付卫东,袁修干,黄本诚,等.调节阀流量的计算方法[J].阀门,1999(1):4-6.
[8]陈垒.连续系统的传递函数模型辨识[D].无锡:江南大学,2012.
[9]李康康.主机冷却水系统优化设计及其温度智能控制的研究[D].武汉:武汉理工大学,2012.