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Study On Application Of Predictive Control And Variable Frequency Speed-adjusting In Distributed Control System

Posted on:2005-01-19Degree:MasterType:Thesis
Country:ChinaCandidate:Y WangFull Text:PDF
GTID:2168360122996165Subject:Pulp and paper engineering
Abstract/Summary:PDF Full Text Request
By the progress of Model Control theory and many years actual experience, Advanced Control Protocol has been perfected. The Predictive Control strategy has been focus direction in the theories research and application, with its three characteristics of predictive model, receding horizon control construction and feedback correction meeting the industrial process control's needs, especially used to Modern Industry which can't be developed an accuracy math model. The paper study the Dynamic Matrix Control (DMC) among of the Predictive Control based on DCS binding ACP and composition of liquid level control system of multi-capacity object. The main content are as follows:1. The basic concepts and the development of the Advanced Control and the Predictive Control are stated after studying a lot of references.2. The Dynamic Matrix Control (DMC) based on the step response of non-variable model is discussed in detail, its three characteristics of predictive model, receding horizon control construction and feedback correction are stated.3. Composition of liquid level control system of multi-capacity object is designed, the advanced DCS is applied in the control system, and the DMC arithmetic technology is applied in the DCS. The paper develops a program to control actual control objects by SCX language, and the parameters of MPC system model are calculated through observing the actual control performances.4. The flow capacity is controlled by frequency inverter. The inverter control the speed of motors through variety of the load, change the traditional immovable speed running to variable frequency speed-adjusting running. The main merits of the technology are high efficiency, save energy and brainpower automation.The study of the project is remarkable for decreasing prime costs, improving the productive, and also provides a necessary way for students to understand modern control theory and ACP theory.
Keywords/Search Tags:Predictive Control, Dynamic Matrix Control (DMC), Distributed Control System (DCS), composition of liquid level control system of multi-capacity object, variable frequency speed-adjusting
PDF Full Text Request
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