سال انتشار: ۱۳۹۱

محل انتشار: بیستمین کنفرانس مهندسی برق ایران

تعداد صفحات: ۶

نویسنده(ها):

S. Mobayen – Intelligent Control Systems Laboratory, School of Electrical and Computer Engineering, Tarbiat Modares
V. Johari Majd –
M.H Asemani – Student Member, IEEE

چکیده:

In this paper, the theory of using algebraic Riccati equation and composite nonlinear feedback technique is considered for robust tracking and model following of linearsystems with time-varying uncertain parameters, multiple timedelays and disturbances. It is guaranteed that with the designed controller, the tracking error decreases asymptotically to zero in the presence of time varying uncertain parameters, delays and disturbances. For performance improvement of the dynamicalsystem, the proposed robust tracking controller consists of linear and nonlinear feedback parts without any switchingelement. The linear feedback law is designed to allow the closed loop system have a small damping ratio and a quick response,while the nonlinear feedback law increases the damping ratio of the system as the system output approaches the output of the reference model. The simulation results illustrate the validity of the developed method