基于数字PID算法的PLC恒压供水系统  

PLC constant pressure water supply system based on digital PID algorithm

作　　者：刘迪[1] 张凯[1] 王冬梅[1] 刘孝磊[2] 

机构地区：[1]海军航空工程学院控制工程系,烟台264001 [2]海军航空工程学院基础部,烟台264001

出　　处：《国外电子测量技术》2010年第2期75-78,共4页Foreign Electronic Measurement Technology

基　　金：海军航空工程学院基础科研基金

摘　　要：由于用户用水的不稳定,经常导致用水高峰期水压较低;供水量低于需求量。传统的恒压供水系统存在控制精度低、能耗大及成本高等缺点。针对上述情况,本论文将PLC与变频调速技术相结合,利用数字PID控制算法构成闭环反馈控制系统,实现对水泵的在线控制。这种方法的控制稳定性好,参数调整容易。该系统取代了传统的供水方式,提高了供水质量,实现自动调节恒压供水的目的。As water used instability of user, it causes the hydraulic pressure of peak of water used to be low frequently; The volume of water supply is lower than the demand. In the traditional constant-voltage water-supply system, there exists such shortcomings as： lower controlling recision, high energy consumption and high cost. In view of above situation, the paper unifies PLC and the frequency conversion velocity modulation technology, uses digital PID control algorithm to constitute the closed loop feedback control system, realizes the control of water supply pump online. This way has the advantage of good control stability and easy parameter adjustment. This system replaces the traditional water supply mode, improves the quality of water supply, realizes the goal of adjusting constant pressure water supply automatically.

关 键 词：变频调速 变频器 恒压供水 PLC 数字PID控制算法 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]