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The load torque observation issue for permanent magnet synchronous motor(PMSM) is studied in the paper, and a design method for exponential decay H∞ load torque observer is obtained. The disturbance rejection rate and the exponential decay rate of observation error can be specified through the studied designed method. So the required disturbance rejection and dynamic responsibility performance can...
Research within the last decade on network measurement has been shown to exhibit self-similarity property in Ethernet, VBR video. Recent research find wireless network node has also self-similar nature. Appropriate service distribution of these sources may be heavy-tailed service distributions. A difficult with heavy-tailed service distribution queuing model is that they may not have closed-from,...
Active queue management (AQM) policies provide an early indication of incipient congestion to the source. In this paper, in terms of Lyapunov asymptotic stability principle, a robust AQM algorithm based on the gain adaptive Smith predictor and PI controller (GAS-PI algorithm) is designed by using the linearized TCP model with time delays. With the simple structure, good robustness and better performance,...
The alpha-robust stabilization condition including system's characteristic roots information is established by applying novel time-delay system robust analysis and design technique in network congestion control issue. The result is presented in the form of linear matrix inequalities (LMIs) problem so that it is easy to be calculated. By solving the corresponding LMI, one can easy obtain the robust...
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