The "model reference adaptive control (MRAC)" is a popular approach from the early nineties to our days. Its basic idea is the application of proper feedback that makes the behavior of the controlled system ...
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We present an approach for combining standard recursive least squares based regression with proven direct model reference adaptive control using a recursively updated modification term. This approach is applicable to ...
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The paper builds on a standard model reference adaptive control (MRAC). Although existing robust modifications of standard adaptive laws can guarantee stability of the overall system even in the presence of small unce...
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This paper is concerned with the design of a novel model reference adaptive control (MRAC) strategy for the control and identification of bimodal Piecewise Affine (PWA) systems. The control strategy is an extension of...
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This paper addresses the problem of sensor uncertainty compensation for model reference adaptive control (MRAC) of multivariable systems. Two output feedback based MRAC schemes are developed for MIMO plants with known...
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Optimal control modification has been developed to improve robustness to model-referenceadaptivecontrol. For systems with linear matched uncertainty, optimal control modification adaptive law can be shown by a singu...
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ISBN:
(纸本)9781600867439
Optimal control modification has been developed to improve robustness to model-referenceadaptivecontrol. For systems with linear matched uncertainty, optimal control modification adaptive law can be shown by a singular perturbation argument to possess an outer solution that exhibits a linear asymptotic property. Analytical expressions of phase and time delay margins for the outer solution can be obtained that allows a free design parameter of the adaptive law to be selected to satisfy stability margins.
model reference adaptive control laws are derived using an H2 optimization approach. In addition, this leads to H2 forms of well known σ- and e- modification based adaptivecontrol architectures. It is shown that H2 ...
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Aircraft damage causes large uncertain system parametric and structural changes which lead to unknown deviations of the aircraft equilibrium points and unknown coupling of the aircraft dynamics. To deal with such unkn...
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This paper describes the application of model reference adaptive control on a light-weight, low-cost quadrotor UAV platform. An adaptivecontroller was designed to augment an existing linear controller that provides a...
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This paper presents a control methodology that utilizes a robust model reference adaptive control technique to regulate the dynamic behavior of a coned mechanical gas face seal system in a flexibly mounted stator conf...
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This paper presents a control methodology that utilizes a robust model reference adaptive control technique to regulate the dynamic behavior of a coned mechanical gas face seal system in a flexibly mounted stator configuration. Individual adaptivecontrollers are designed for the three stator rigid body degrees of freedom based on the linear portions of their respective equations of motion. The force and moments generated within the gas film are estimated using Kalman filter-based estimators and directly cancelled in the control algorithm using offset control signals. The estimation errors are considered as bounded disturbances to the seal system and are taken into account by the robust adaptivecontrollers. Simulation results show that the controllers effectively stabilize the stator motion and control the stator tilts to synchronously track the rotor runout with near-zero relative misalignment magnitude and phase shift, thus, minimizing gas leakage. [DOI: 10.1115/1.4001708]
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