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An Online Adaptive Fast Control Approach Based on Local Linearization and Its Application to a Large Inertia System

[+] Author Affiliations
Jia Xie, Shengdun Zhao, Jintao Liang

Xi’an Jiaotong University, Xi’an, Shaanxi, China

Zhenghui Sha

Washington State University, Pullman, WA

Paper No. DSCC2011-5987, pp. 573-580; 8 pages
  • ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control
  • ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control, Volume 1
  • Arlington, Virginia, USA, October 31–November 2, 2011
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 978-0-7918-5475-4
  • Copyright © 2011 by ASME


In this paper, an online adaptive fast control approach (OAFC) based on local linearization is proposed. This engineering approach has two distinctive features: a) it can realize stable steady-state control; and b) it can make the transition control process fast and smooth. It applies a hybrid structure system and uses the local linearization in a small range of the error to solve the control problem caused by the nonlinear, time-varying, and time-delay large inertia system involved in this paper. Firstly, by timely decoupling the transition process and the steady state, the time of the transition process is reduced. Then, OAFC is realized by proposed OAFC algorithm and an online adaptive fast parameters calculation method. Finally, OAFC is applied to a large inertia system — wet raw material mill in a cement plant. The practical application and the control results demonstrate the effectiveness and implementability of the proposed approach.

Copyright © 2011 by ASME



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