Performance-driven adaptive output feedback control system with a PFC designed via FRIT approach

Mizumoto, Ikuro; Takagi, Toshiharu; Fukui, Sota; Yamanaka, Kenshi

doi:10.1504/ijamechs.2012.051576

Cited by 2 publications

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“…Kaufman, Barkana, and Sobel [6] summarized stability results which showed that all signals in the adaptive system were bounded and that the augmented error was asymptotically vanishing if the augmented plant was ASPR. Other results in the design of parallel feedforward compensators which realized an ASPR augmented system were developed by Mizumoto, Fukui, Yamanaka, and Shah [7] using the Fictitious Reference Iterative Tuning (FRIT) method.…”

Section: Introductionmentioning

confidence: 99%

Simple Adaptive Delta Operator Aircraft Flight Control for Accommodation of Loss of Control Effectiveness

Cano¹,

Sobel²

2016

ENG

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A new proof for stability of delta operator simple adaptive control is presented in terms of a set of Linear Matrix Inequalities (LMIs). The paper shows how to design a feedforward gain to satisfy the LMIs over a polytope of loss of control effectiveness failures. The MATLAB Robust Control Toolbox is used to find the feedforward gain with the smallest norm that satisfies the LMIs. Examples are presented of the F/A-18 aircraft and the Innovative Control Effectors (ICE) tailless aircraft that show the design of a feedforward gain for a loss of control effectiveness in any one control effector. The designs use a fixed eigenstructure assignment controller for an inner loop augmented with the simple adaptive controller. Simulations of both aircraft include simultaneous loss of control effectiveness failure and lateral wind gust. Simulation results for the F/A-18 aircraft show that the adaptive controller achieves almost perfect tracking whereas the nonadaptive controller cannot achieve a coordinated turn when an aileron failure occurs. The ICE tailless aircraft uses sideslip, washed-out stability axis yaw rate, and stability axis roll rate feedback for both the inner loop eigenstructure assignment controller and the simple adaptive controller. However, the adaptive controller also uses bank angle feedback. Simulation results for the ICE tailless aircraft show that the adaptive controller achieves almost perfect tracking whereas the nonadaptive controller diverges when an all moving tip failure occurs.

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Section: Introductionmentioning

confidence: 99%

Simple Adaptive Delta Operator Aircraft Flight Control for Accommodation of Loss of Control Effectiveness

Cano¹,

Sobel²

2016

ENG

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Performance-Driven Adaptive Output Feedback Control with Direct Design of PFC

Takagi¹,

Mizumoto²,

Tsunematsu³

2015

J. Robot. Mechatron.

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<div class=""abs_img""> <img src=""[disp_template_path]/JRM/abst-image/00270005/01.jpg"" width=""300"" /> Block diagram of proposed control</div> An adaptive control system is configured simply by output feedback when the controlled system is almost strictly positive real (ASPR). ASPR conditions are, however, very severe restrictions for actual systems. The parallel feedforward compensator (PFC), which is designed for making augmented controlled system ASPR, has been proposed to solve this problem. We propose a performance-driven adaptive output feedback control system with a PFC designed via direct design. Our proposed adaptive control system is to be used for systems whose properties change during operation. Our PFC’s direct design uses the system’s input/output data and readjusts output feedback gain based on a performance index. The effectiveness of the proposed method is confirmed through experiments using liquid level control for the two-tank process system. </span>

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Performance-driven adaptive output feedback control system with a PFC designed via FRIT approach

Cited by 2 publications

References 0 publications

Simple Adaptive Delta Operator Aircraft Flight Control for Accommodation of Loss of Control Effectiveness

Simple Adaptive Delta Operator Aircraft Flight Control for Accommodation of Loss of Control Effectiveness

Performance-Driven Adaptive Output Feedback Control with Direct Design of PFC

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