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A new parameter estimation algorithm for time-varying systems and its application to a cement blending process

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3 Author(s)
Chenghui Zhang ; Control Sci. & Eng. Sch., Shandong Univ., Jinan, China ; Ke Li ; Jihong Wang

A new parameter estimation method for time-varying systems is proposed in this paper. First, by introducing 'a priori' knowledge into the performance index of least square (LS) algorithm, a modified LS algorithm is developed. Then, a number of modifications have been proposed to improve some existing LS algorithms, such as the real-time recursive LS algorithm and the instrumental variable (IV) algorithm. Finally the newly proposed method is applied to a cement blending process. The test results show that the new LS algorithm has remarkably improved the estimation accuracy and the convergent rate of tracking to the true time-varying system parameters.

Published in:

Control, Automation, Robotics and Vision Conference, 2004. ICARCV 2004 8th  (Volume:2 )

Date of Conference:

6-9 Dec. 2004