首页 | 本学科首页   官方微博 | 高级检索  
     


Smith predictor with inverted decoupling for square multivariable time delay systems
Authors:Juan Garrido  Francisco Vázquez  Fernando Morilla  Julio E. Normey-Rico
Affiliation:1. Department of Computer Science and Numerical Analysis, University of Cordoba, Cordoba, Spainjuan.garrido@uco.es;3. Department of Computer Science and Numerical Analysis, University of Cordoba, Cordoba, Spain;4. Department of Computer Science and Automatic Control, UNED, Madrid, Spain;5. Departmento de Automa??o e Sistemas, Universidade Federal de Santa Catarina, Florianópolis, Brazil
Abstract:This paper presents a new methodology to design multivariable Smith predictor for n×n processes with multiple time delays based on the centralised inverted decoupling structure. The controller elements are calculated in order to achieve good reference tracking and decoupling response. Independent of the system size, very simple general expressions for the controller elements are obtained. The realisability conditions are provided and the particular case of processes with all of its elements as first-order plus time delay systems is discussed in more detail. A diagonal filter is added to the proposed control structure in order to improve the disturbance rejection without modifying the nominal set-point response and to obtain a stable output prediction in unstable plants. The effectiveness of the method is illustrated through different simulation examples in comparison with other works.
Keywords:Smith predictor  multivariable time delay systems  decoupling control
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号