Concise Robust Control for MIMO System Based on Frequency Domain Analysis

In this paper, a concise nonlinear robust control scheme based on the frequency domain is proposed. Compared with the arbitrary selection of weighting function in classical H∞ mixed sensitivity robust control design procedures, the CGSA methods gives a relatively more straightforward and concise design procedure for MIMO robust control problem. In the simulations, the CGSA is applied to an integrated rudder and fin control loop to indicate that the integrated rudder and fin CGSA control scheme is very feasible for future practical application.

Download Full-text

Frequency domain analysis and robust control design for an ideal flexible beam

Automatica ◽

10.1016/0005-1098(91)90130-t ◽

1991 ◽

Vol 27 (6) ◽

pp. 947-961 ◽

Cited By ~ 37

Author(s):

Kathryn Lenz ◽

Hitay Özbay ◽

Allen Tannenbaum ◽

Janos Turi ◽

Blaise Morton

Keyword(s):

Robust Control ◽

Frequency Domain ◽

Control Design ◽

Domain Analysis ◽

Frequency Domain Analysis ◽

Flexible Beam ◽

Robust Control Design

Download Full-text

Robust Optimal Control of MAV Based on Linear-Time Varying Decoupled Model Dynamics

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.198.571 ◽

2013 ◽

Vol 198 ◽

pp. 571-576 ◽

Cited By ~ 2

Author(s):

Arkadiusz Mystkowski

Keyword(s):

Robust Control ◽

Linear Time ◽

Design Procedure ◽

Serial Connection ◽

Air Vehicle ◽

Model Dynamics ◽

Aerial Vehicle ◽

Robust Control Design ◽

Control Feedback ◽

Nonlinear Robust

This paper discusses a nonlinear robust control design procedure to micro air vehicle that uses the singular value (μ) and μ-synthesis technique. The optimal robust control law that combines a linear parameters varying (LPV) of UAV (unmanned aerial vehicle) are realized by using serial connection of the Kestrel autopilot and the Gumstix microprocessor. Thus, the robust control feedback loops, which handle the uncertainty of aerodynamics derivatives, are used to ensure robustness stability of the UAV local dynamics in longitudinal and lateral control directions.

Download Full-text

A Frequency Domain Approach for Robust Control Design by Fractional Calculus

SICE Journal of Control Measurement and System Integration ◽

10.9746/jcmsi.2.162 ◽

2009 ◽

Vol 2 (3) ◽

pp. 162-167

Author(s):

Fujio IKEDA ◽

Shigehiro TOYAMA

Keyword(s):

Robust Control ◽

Fractional Calculus ◽

Frequency Domain ◽

Control Design ◽

Robust Control Design ◽

Frequency Domain Approach

Download Full-text

Robust control system design in frequency domain

Archives of Control Sciences ◽

10.2478/v10170-011-0042-y ◽

2013 ◽

Vol 23 (1) ◽

pp. 61-78 ◽

Cited By ~ 4

Author(s):

Vojtech Veselý ◽

Jakub Osuský

Keyword(s):

Robust Control ◽

Frequency Domain ◽

Controller Design ◽

Mimo Systems ◽

Additive Model ◽

Water System ◽

Design Procedure ◽

Robust Control System ◽

Small Gain ◽

Tank Water

Abstract In this paper two robust control methods for hybrid system are presented. Both methods are usefull for SISO and MIMO systems. Controller design procedure is developed in frequency domain. Equivalent subsystem method is used for controller design in this paper. Stability condition of proposed methods bases on small gain theory and uses additive and inverse additive model type. Two tank water system is presented in the paper and serves as a numerical example to compare effectiveness of described methods

Download Full-text

A NEW ROBUST CONTROL DESIGN PROCEDURE BASED ON A PE IDENTIFICATION UNCERTAINTY SET

IFAC Proceedings Volumes ◽

10.3182/20020721-6-es-1901.00435 ◽

2002 ◽

Vol 35 (1) ◽

pp. 145-150 ◽

Cited By ~ 3

Author(s):

X. Bombois ◽

G. Scorletti ◽

B.D.O. Anderson ◽

M. Gevers ◽

P. Van den Hof

Keyword(s):

Robust Control ◽

Design Procedure ◽

Control Design ◽

Uncertainty Set ◽

Robust Control Design

Download Full-text

Target feedback loop/loop transfer recovery (TFL/LTR) robust control design procedures

10.1109/cdc.1990.203799 ◽

1990 ◽

Cited By ~ 11

Author(s):

R. Prakash

Keyword(s):

Robust Control ◽

Feedback Loop ◽

Control Design ◽

Design Procedures ◽

Loop Transfer Recovery ◽

Robust Control Design

Download Full-text

From fractional-order to complex-order integrator loop gain: Robust control design and its stability analysis

Transactions of the Institute of Measurement and Control ◽

10.1177/0142331219836473 ◽

2019 ◽

Vol 41 (13) ◽

pp. 3799-3807

Author(s):

Mohammad Reza Rahmani ◽

Ali Akbar Jalali

Keyword(s):

Control System ◽

Stability Analysis ◽

Robust Control ◽

Fractional Order ◽

Design Procedure ◽

Loop Control ◽

Complex Order ◽

Phase Slope ◽

Nyquist Stability ◽

Robust Control Design

Complex-order differintegral (COD) is the extended version of fractional-order one in which the differintegral order can be a complex number rather than a real number. In comparison with fractional-order differintegral (FOD), the distinguishing feature of the COD is that the phase slope of its Bode diagram is a function of imaginary part of the complex order of the COD. In this paper, by the use of this property of the COD, a robust control system is proposed. The design procedure and the realization of the proposed COD-based closed-loop control system are discussed. Since the phase of COD’s frequency response is a nonsymmetric function of frequency, stability analysis of the proposed control system is considered a problematic task. It is proven that for the stability of the control system, it is essential that the COD be applied in a limited frequency band that is derived by the use of the Nyquist stability criterion. Finally, some numerical examples are given to demonstrate the validity and superiority of the proposed complex-order control system.

Download Full-text

Rigid-Flexible Coupled Dynamics and PD-Robust Control Design for the Spacecraft with Rotating Solar Panels

International Journal of Applied Mechanics ◽

10.1142/s175882512150112x ◽

2021 ◽

Author(s):

Yuteng Cao ◽

Dengqing Cao ◽

Guiqin He ◽

Yuxin Hao ◽

Xinsheng Ge

Keyword(s):

Robust Control ◽

Dynamical Equation ◽

Vibration Suppression ◽

Control Method ◽

Ritz Method ◽

Solar Panels ◽

Central Platform ◽

Attitude Maneuver ◽

Control Scheme ◽

Robust Control Design

The dynamical model for the spacecraft with multiple solar panels and the cooperative controller for such spacecraft are studied in this paper. The spacecraft consists of a rigid platform and two groups of flexible solar panels, where solar panels could be driven to rotate by the connecting shaft. The flexible solar panel involves the use of the orthogonal polynomial in two directions to describe its elastic deformation. By using the Rayleigh–Ritz method, the characteristic equation is derived to obtain natural frequencies and modal shapes of the whole spacecraft. Then the discrete rigid-flexible coupled dynamical equation of the spacecraft is obtained by using the Hamiltonian principle. The equation involves the coupling of the attitude maneuver, solar panels’ driving and vibration suppression. These dynamical behaviors are addressed by the rigid-flexible coupled mode for the first time in this paper. Based on the dynamical equation, the cooperative control scheme is designed by combing the proportional-differential and robust control method. Numerical results show the accuracy of the present modelling method and the validation of the control strategy. The modal analysis implies the complex rigid-flexible coupled characteristic between the central platform and flexible solar panels. The proposed control scheme can maintain the attitude stability while solar panels are being driven, as well as the vibration suppression of flexible solar panels.

Download Full-text