scholarly journals A unified approach to closed-loop plant identification and direct controller reduction

2001 ◽  
Author(s):  
I. D. Landau ◽  
A. Karimi
Keyword(s):  
Closed Loop ◽  
Unified Approach ◽  
Plant Identification

Adaptive Tuning Functions Tracking Control with Nonlinear Adaptive Observers

2014 ◽  
Vol 11 (2) ◽  
pp. 14-21
Author(s):  
R. Mishkov ◽  
V. Petrov
Keyword(s):  
Tracking Control ◽  
Closed Loop ◽  
Adaptive System ◽  
Permanent Magnet Synchronous Motor ◽  
Unified Approach ◽  
Closed Loop System ◽  
Estimation Errors ◽  
Nonlinear Adaptive Control ◽  
Performance Specifications ◽  
System Time

Abstract The paper is dedicated to the derivation of a unified approach for nonlinear adaptive closed loop system design with nonlinear adaptive state and parameter observers combined with tuning functions-based nonlinear adaptive control for trajectory tracking. The proposed approach guarantees asymptotic stability of the closed loop nonlinear adaptive system with respect to the tracking and state estimation errors and Lyapunov stability of the parameter estimator. The advantages of the approach are the lack of over-parametrization, resulting in a minimal number of estimator equations and the preservation of the overdamped performance specifications of the closed loop nonlinear adaptive system in its whole range of operation. The application of the approach to a permanent magnet synchronous motor driven inverted pendulum concludes with simulation of the closed loop nonlinear adaptive system time responses.

CHAOTIC CONTROL AND CHAOTIFICATION USING FUZZY APPROACH

2008 ◽  
Vol 18 (01) ◽  
pp. 263-274
Author(s):  
KUANG-YOW LIAN ◽  
CHENG-SEA HUANG ◽  
WEN-HSIEN FANG ◽  
CHIEN-HSING SU
Keyword(s):  
State Feedback ◽  
Chaotic Systems ◽  
Closed Loop ◽  
Feasible Solution ◽  
Fuzzy Model ◽  
Stabilization Problem ◽  
Unified Approach ◽  
Closed Loop System ◽  
Chaotic Control ◽  
The Stability

In this paper, we propose a fuzzy model-based methodology to deal with various control objectives for discrete-time chaotic systems from a unified viewpoint. With intent to unify the design process, we introduce a new design concept called virtual-desired-variable synthesis. Then, both the chaotic control and chaotification are eventually treated as a stabilization problem. Consequently, the conditions concerning the stability of the closed-loop system are formulated into LMIs. A feasible solution of the LMI problem guarantees the quadratical stability and gives the state feedback gains as well. The well-known Hénon map is used to demonstrate the unified approach.

Intestinal Bacteriology of Closed Loop, Strangulated Obstruction in Dogs.

1961 ◽  
Vol 41 (3) ◽  
pp. 245-250 ◽  
Author(s):  
George H. Bornside ◽  
Isidore Cohn
Keyword(s):  
Closed Loop
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