scholarly journals Disturbance Attenuation Via a Reduced-Order Output Feedback Controller for Rigid Robotics Manipulators

1996 ◽  
Vol 29 (1) ◽  
pp. 403-408 ◽  
Author(s):  
Michel Zasadzinski ◽  
M. Faycal Khelfi ◽  
Mohamed Darouach ◽  
Edouard Richard
Keyword(s):  
Output Feedback ◽  
Feedback Controller ◽  
Disturbance Attenuation ◽  
Reduced Order ◽  
Output Feedback Controller

Modal Testing and Suboptimal Vibration Control of Flexible Rotor Bearing System by Using a Magnetic Bearing

1992 ◽  
Vol 114 (2) ◽  
pp. 244-252 ◽  
Author(s):  
Chong-Won Lee ◽  
Jong-Sun Kim
Keyword(s):  
Output Feedback ◽  
Magnetic Bearing ◽  
Feedback Controller ◽  
Reduced Order Model ◽  
Flexible Rotor ◽  
Order Model ◽  
Reduced Order ◽  
Output Feedback Controller ◽  
Rotor Bearing ◽  
Bearing System

A suboptimal output feedback controller is designed based on a reduced order model and applied to a flexible rotor bearing system in order to control the unstable or lightly damped vibrations occurring during operation. The reduced order model is a truncated modal equation of the distributed parameter system obtained through the singular perturbation. The instability problem arising from the spillover effects caused by the uncontrolled high frequency modes is prevented through the constrained optimization by incorporating the spillover term into the performance index. The application of the matrix minimum principle yields a set of matrix equation similar to the unconstrained output feedback controller. The efficiency of the proposed method is demonstrated experimentally with a flexible rotor by using a magnetic bearing.

Robust H2 Output Feedback Controller Design for Damping Power System Oscillations

2017 ◽  
Vol 6 (10) ◽  
pp. 8
Author(s):  
Kho Hie Kwee ◽  
Hardiansyah .
Keyword(s):  
Power System ◽  
Output Feedback ◽  
Controller Design ◽  
Sufficient Conditions ◽  
Feedback Controller ◽  
Linear Matrix ◽  
Parameter Uncertainties ◽  
Worst Case ◽  
Output Feedback Controller ◽  
Power System Oscillations

This paper addresses the design problem of robust H2 output feedback controller design for damping power system oscillations. Sufficient conditions for the existence of output feedback controllers with norm-bounded parameter uncertainties are given in terms of linear matrix inequalities (LMIs). Furthermore, a convex optimization problem with LMI constraints is formulated to design the output feedback controller which minimizes an upper bound on the worst-case H2 norm for a range of admissible plant perturbations. The technique is illustrated with applications to the design of stabilizer for a single-machine infinite-bus (SMIB) power system. The LMI based control ensures adequate damping for widely varying system operating.

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