标题：A new parameter estimation algorithm for time-varying systems and its application to a cement blending process
作者：Zhang, CH; Li, K; Wang, JH
作者机构：[Zhang, CH; Li, K; Wang, JH]Shandong Univ, Control Sci & Engn Sch, Jinan 250061, Peoples R China.
会议名称：8th International Conference on Control, Automation, Robotics and Vision (ICARCV 2004)
会议日期：DEC 06-09, 2004
来源：2004 8TH INTERNATIONAL CONFERENCE ON CONTROL, AUTOMATION, ROBOTICS AND VISION, VOLS 1-3
关键词：parameter estimation; performance index; Least Square; time-varying; systems
摘要：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 existed 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.