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Stability Analysis of Network-Based Control Systems Subject to Jitter of Sampling Rates and Time Delays

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4 Author(s)
Seng Qing ; School of Information Science and Engineering, Central South University, Changsha 410083, P. R. China; School of Basic Education for Officers, National University of Defense Technology, Changsha 410003, P. R. China. E-mai: lshenqing@public.cs.hn.cn ; Gui Weihua ; Yang Chunhua ; Xiong Ying

In the network-based control systems, the insertion of the communication network introduces time varying delays in the control loop, the application of dynamic bandwidth allocation/scheduling techniques may introduce varying sampling rates for each control loop, varying sampling rates and time delays may degrade the stability of control loops. This paper represents these bounded time uncertainty as a discrete-time closed-loop interval matrix, and derives a robust sufficient stability condition based on evaluating the norm of a time invariant matrix. Simulations show that our result is simple and efficacious.

Published in:

2007 Chinese Control Conference

Date of Conference:

July 26 2007-June 31 2007