价值工程
價值工程
개치공정
VALUE ENGINEERING
2015年
14期
46-48
,共3页
三容水箱%预测控制%多模型%PID
三容水箱%預測控製%多模型%PID
삼용수상%예측공제%다모형%PID
three-tank water tank%predictive control%multi-model%PID
三容水箱液位控制系统，常应用于工业上。但由于非线性，大时滞，参数时变等特点，使其发展受到一定限制。本文针对其缺点，介绍基于对象特征信息的多模型建模方法，获得近似的多模型表示，并利用PID快速响应的特性，将PID算法与预测控制相结合，提出了预测PID控制方法。实验表明，预测PID控制能实现良好跟踪控制，使下水箱液位保持在目标范围之内，克服了传统控制带来的一些不足，进而满足控制的要求。
三容水箱液位控製繫統，常應用于工業上。但由于非線性，大時滯，參數時變等特點，使其髮展受到一定限製。本文針對其缺點，介紹基于對象特徵信息的多模型建模方法，穫得近似的多模型錶示，併利用PID快速響應的特性，將PID算法與預測控製相結閤，提齣瞭預測PID控製方法。實驗錶明，預測PID控製能實現良好跟蹤控製，使下水箱液位保持在目標範圍之內，剋服瞭傳統控製帶來的一些不足，進而滿足控製的要求。
삼용수상액위공제계통，상응용우공업상。단유우비선성，대시체，삼수시변등특점，사기발전수도일정한제。본문침대기결점，개소기우대상특정신식적다모형건모방법，획득근사적다모형표시，병이용PID쾌속향응적특성，장PID산법여예측공제상결합，제출료예측PID공제방법。실험표명，예측PID공제능실현량호근종공제，사하수상액위보지재목표범위지내，극복료전통공제대래적일사불족，진이만족공제적요구。
The tank level control system of three-tank water tank is often used in industry. However, its development is subject to certain limits for the characteristics of nonlinearity, long time-delay and parameter time variation. For its shortcomings, this paper introduces the multi-model approach based on object feature information in order to achieve the approximate representation of multi-model. Besides, this paper also proposes the control technique of predicting PID through the combination of PID algorithm and predictive control by use of the characteristic of PID quick response. Experiments show that the control technique of predicting PID can obtain a better tracking control which can keep the low water level on target. Therefore, it can overcome some shortcomings of conventional control technique and thus meet the control requirements.
