A Flexible Structure Controller Design Method Using Mode Residualization and Output Feedback

1984 ◽  
Vol 7 (1) ◽  
pp. 125-127 ◽  
Author(s):  
J. A. Bossi ◽  
G. A. Price
Keyword(s):  
Output Feedback ◽  
Controller Design ◽  
Design Method ◽  
Flexible Structure

Bending and Torsional Vibration Control of a Flexible Structure Using H-infinity Based Approach

1997 ◽  
Vol 9 (5) ◽  
pp. 387-392
Author(s):  
Indra N. Kar ◽  
◽  
Kazuto Seto
Keyword(s):  
Torsional Vibration ◽  
Controller Design ◽  
Design Method ◽  
Flexible Structure ◽  
Mass Model ◽  
H Infinity ◽  
Actuator Dynamics ◽  
Lumped Parameter ◽  
Dynamic Output Feedback Controller ◽  
Three Degree Of Freedom

This paper presents a method of controlling the bending and torsional vibration mode of a flexible structure using H-infinity optimal control. A new idea is proposed in order to reduce the unmodeled system uncertainties by placing actuators in the nodes of certain neglected vibration modes. Then, the controller is designed based on the reduced order model and is capable of attenuating vibration without causing spillover instability. For this purpose, a three degree of freedom lumped parameter mass model of a plate structure is considered to control its vibrations using a dynamic output feedback controller. The actuator dynamics and the placement of the actuators are considered for a effective controller design method. The efficacy of the controller is shown through simulations.

LMI-Based Decentralized PID Controller Design With Application to the Shape Control of Magnetic Fluid Deformable Mirrors

2010 ◽  
Author(s):  
Zhizheng Wu ◽  
Azhar Iqbal ◽  
Foued Ben Amara
Keyword(s):  
Adaptive Optics ◽  
Output Feedback ◽  
Pid Controller ◽  
Control Algorithm ◽  
Closed Loop ◽  
Controller Design ◽  
Design Method ◽  
Pid Controller Design ◽  
Static Output ◽  
Adaptive Optics System

In this paper, a decentralized robust PID controller design method is proposed for multi-input multi-output systems. The system model is first decoupled in the low frequency range, and only the diagonal entries in the DC-decoupled plant model are retained. To deal with the resulting unmodeled high frequency dynamics, a decentralized robust PID controller design method is proposed, where the robust stability and transient response performance of the resulting closed loop system are formulated as a multi-objective H∞/H2 static output feedback problem. The desired parameters of the PID controller are determined by solving a static output feedback problem using linear matrix inequalities (LMIs). Finally, the performance of the proposed control algorithm is experimentally evaluated on the adaptive optics system involving a prototype magnetic fluid deformable mirror (MFDM). The experimental results illustrate the effectiveness of the proposed control algorithm for the MFDM surface shape tracking in the closed loop adaptive optics system.

scholarly journals Gain scheduled controller design for thermo-optical plant

2014 ◽  
Vol 24 (3) ◽  
pp. 333-349 ◽  
Author(s):  
Vojtech Veselý ◽  
Jakub Osuský ◽  
Ivan Sekaj
Keyword(s):  
Output Feedback ◽  
Closed Loop ◽  
Controller Design ◽  
Design Method ◽  
Feedback Gain ◽  
Small Gain ◽  
Gain Scheduled Controller ◽  
The Stability ◽  
Gain Scheduled ◽  
Siso Systems

Abstract This paper presents a gain scheduled controller design for MIMO and SISO systems in the frequency domain using the genetic algorithms approach. The proposed method is derived from the M-delta structure of closed loop MIMO (SISO) systems and the small gain theory is exploited to obtain the stability condition. An example of real system illustrates the effectiveness of the proposed output feedback gain scheduled controller design method and also the possibility to improve its performance using the genetic algorithm

Output Feedback Control of NCS with Communication Constraints

2013 ◽  
Vol 341-342 ◽  
pp. 760-766
Author(s):  
Hui Ying Chen ◽  
Zu Xin Li ◽  
Pei Liang Wang
Keyword(s):  
Output Feedback ◽  
Controller Design ◽  
Design Method ◽  
Output Feedback Control ◽  
Switching System ◽  
Communication Constraints ◽  
Short Delay ◽  
Information Scheduling ◽  
And Control ◽  
Asymptotic Stability Condition

Considering the influence of communication constraints and uncertain short delay, this paper models NCS with communication sequence as a discrete periodical switching system with uncertainty, which integrates information scheduling and control. Using the method of piecewise Lyapunov function and the switching system theory, the asymptotic stability condition of the system with periodical information scheduling is derived in the form of matrix inequalities, and a output feedback controller design method is derived.

Robust Η∞ Controller Design for Networked Control Systems with Exponential Convergence

2013 ◽  
Vol 475-476 ◽  
pp. 621-627
Author(s):  
Wen Ying Chen
Keyword(s):  
Control Systems ◽  
Output Feedback ◽  
Controller Design ◽  
Networked Control Systems ◽  
Design Method ◽  
Networked Control ◽  
Packet Dropout ◽  
Closed Loop System ◽  
Sufficient And Necessary Conditions ◽  
Data Dropouts

The output feedback exponential robust control for networked control systems with stochastic network-induced delay and packet dropout is studied. Firstly, a state observer is designed for estimating the state values and compensating data dropouts. Then the closed system is modeled as asynchronous dynamical system constrained by configuration event rate. By using Lyapunov principle, sufficient and necessary conditions for robust stability and exponential stability of the closed loop system is obtained and the output feedback controller design method is presented. Simulation example for the design is done, comparing with the other relative methods, the results shows the validity of the method.

scholarly journals Static Output Feedback Control Design for Descriptor Systems

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
Mohamed Yagoubi
Keyword(s):  
Output Feedback ◽  
Controller Design ◽  
Design Method ◽  
Output Feedback Control ◽  
Descriptor Systems ◽  
Static Output Feedback ◽  
Closed Loop System ◽  
Static Output Feedback Control ◽  
Descriptor Observer ◽  
Static Output

The static output feedback (SOF) synthesis problem for descriptor systems is considered in this paper. LMI-based algorithms are proposed to find potentially structured SOF gains ensuring admissibility and evenH∞performance of the closed-loop system. These algorithms are then used to propose a (descriptor) observer-basedH∞controller design method. An alternative technique for determining such separated estimation/control structure, after the design step, is also proposed. Several numerical examples, throughout the paper, demonstrate the effectiveness of the proposed algorithms.

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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