文章基本信息

标题：Optimization and Cascade Robust Temperature Control of a Refrigerated Chamber ⁎
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作者：Guillermo Bejarano ; David Rodríguez ; José A. Alfaya 等
期刊名称：IFAC PapersOnLine
印刷版ISSN：2405-8963
出版年度：2018
卷号：51
期号：25
页码：110-115
DOI：10.1016/j.ifacol.2018.11.090
语种：English
出版社：Elsevier
摘要：AbstractThis paper addresses the temperature control of a refrigerated chamber, using a vapour-compression refrigeration system. A cascade control strategy is proposed, where the outer controller regulates the chamber temperature by generating a reference on the cooling power to be satisfied by the inner controller, which manipulates the actual manipulated variables: the compressor speed and the expansion valve opening. Since two control variables are available to satisfy only a certain cooling demand, energy efficiency is addressed to generate the required cooling power as efficiently as possible. A simple decoupling strategy is applied to reduce the high coupling between both controlled variables, while the PID parameters are calculated applying affine parameterisation and considering a certain condition for robust stability. The performance of the proposed control strategy is evaluated in simulation, concerning reference tracking and disturbance rejection.
关键词：KeywordsVapour-compression refrigerationCascade controlOptimizationUncertain linear systemsDecouplingRobust stability