Time-varying parameter estimation and adaptive Kalman filter in computer aided control application

Authors : Levent ÖZBEK

Pages : 343-350

View : 22 | Download : 8

Publication Date : 2021-11-17

Article Type : Research Paper

Abstract :Estimating the unknown parameter vector of the system model is the most important problems in system identification. Especially in cases where the system`s parameters are time-variable, it is observed that estimations obtained using estimator have deviated from the actual values, and therefore that the estimator must be corrected to some extent. In this paper, some methods for the parameter estimation in cases where a system is modelled with ARX Autoregressive Exogenous Input); are considered. After reviewing the problems, a simulation study has been made on comparing different estimation methods. Corrected insert ignore into journalissuearticles values(Adaptive); Kalman Filter insert ignore into journalissuearticles values(CKF); gives results more accurately than Normal Kalman Filter insert ignore into journalissuearticles values(NKF); for time varying parameter estimation. Moreover, after an introduction to the method of minimum variance feed-back control, using this method and CKF, a heating control is done in computer aided experimental study. CKF ensures that the system is kept under control by correctly estimating the parameter that changes over time.
Keywords : System, Identification, Parameter estimation, Adaptive Kalman filter, Control

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