Parameter estimation for a dual-rate system with time delay.
作者信息
Chen Lei, Han Lili, Huang Biao, Liu Fei
机构信息
Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education), Institute of Automation, Jiangnan University, Wuxi 214122, PR China; Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Canada AB T6G 2G6.
Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Canada AB T6G 2G6.
出版信息
ISA Trans. 2014 Sep;53(5):1368-76. doi: 10.1016/j.isatra.2014.01.001. Epub 2014 Feb 6.
This paper investigates the parameter estimation problem of the dual-rate system with time delay. The slow-rate model of the dual-rate system with time delay is derived by using the discretization technique. The parameters and states of the system are simultaneously estimated. The states are estimated by using the Kalman filter, and the parameters are estimated based on the stochastic gradient algorithm or the recursive least squares algorithm. When concerning state estimate of the dual-rate system with time delay, the state augmentation method is employed with lower computational load than that of the conventional one. Simulation examples and an experimental study are given to illustrate the proposed algorithm.
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