【作者】 李俊红；

【导师】 杨马英；

【作者基本信息】 浙江工业大学 ， 控制理论与控制工程， 2005， 硕士

【摘要】 预测控制是上世纪70年代末产生和发展起来的一类新型计算机控制算法,是工业过程先进控制的一种典型方法。 本文基于本校自动化研究生实验室的AE2000A过程控制对象及现场总线PLC控制装置,开展预测控制策略研究,重点研究具有大时滞、强耦合、及非线性特性的对象的预测控制策略及其实现。主要研究内容包括: 1.介绍了预测控制的基本原理,较全面地综述了预测控制的发展概况和在工业领域中的应用。 2.介绍了AE2000A典型过程装置的对象结构、传感器、执行器装置,对基于PROFIBUS的西门子现场总线上位机控制系统的网络结构、基本控制模块进行了介绍,并对上位机的编程软件STEP 7、组态监控软件WINCC的组态环境进行了介绍。 3.针对AE2000A过程控制装置中的纯滞后盘管的大时滞特性,将时滞动态矩阵控制方法应用于该对象,分别进行了设定值跟踪及抗干扰响应实验,并与传统的PID控制进行了对比实验,得到了很好的控制效果。 4.针对AE2000A过程控制装置中的锅炉内胆及强制对流换热器组成的具有时滞和强耦合的复杂对象,将多变量动态矩阵解耦控制应用于该对象,进行了设定值跟踪实验、解耦实验,取得了较好的实验效果。 5.针对电动调节阀这一执行机构具有的死区、粘滞等非线性特性,基于Hammerstein模型非线性预测控制的思想,采用基于电动调更多还原

【Abstract】 Predictive control is a new type of computer algorithm appeared in the late 1970, and it is one of the typical advanced process control algorithms.The paper surveys predictive control of complicated objects with large time-delay, strong coupling, and nonlinear characteristic. The control strategies are achieved through the AE2000A typical process equipment and the PROFIBUS PLC control equipment of the automatic graduate laboratory. The main contents and conclusions are summarized as follows:1. The general principle of predictive control method is introduced systematically, and a survey on the development and application of predictive control method in industry field is presented.2. The object structure, sensor, and the actuator of the AE2000A typical process equipment are introduced, and the network structure and basic control module of the Siemens PROFIBUS host computer control system are discussed. The programming software-STEP 7 and the configuration software-WINCC software are introduced.3. Time-delay Dynamic Matrix Control strategy is used to the pure time-delay plate-tube aimed at its large time-delay characteristic, set-point tracing and anti-disturbance experiments are implemented, and a better control behavior is achieved comparing to the traditional PID control.4. Multivariate Dynamic Matrix Control decoupling strategy is used to the generalized object combined by the electric heating boiler and the更多还原