H2/H∞ Output Tracking Control with a Performance Compensator for Aeroengines

A robust output tracking controller is necessary for the safe and reliable operation of aeroengines. This paper aims at developing an H 2 / H ∞ output tracking approach for aeroengines. In order to improve the tracking performance of the traditional robust tracker, the proposed control structure is designed as a combination of a nominal controller and a compensator. Concretely, an H 2 / H ∞ nominal controller is derived from game algebraic Raccati equation (GARE), which facilitates establishing a compensator for the system. Since the reference is usually unknown in advance for practical application, the proposed compensator is calculated online according to the nominal controller and the current reference. The solvability of the compensator and the stability of the system is guaranteed for both stable and bounded unstable references. Simulation examples for a turbofan engine are provided to demonstrate the effectiveness of the proposed algorithm.

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Stability Analysis andH∞Output Tracking Control for Linear Systems with Time-Varying Delays

Mathematical Problems in Engineering ◽

10.1155/2014/184292 ◽

2014 ◽

Vol 2014 ◽

pp. 1-15 ◽

Cited By ~ 1

Author(s):

K. H. Kim ◽

M. J. Park ◽

O. M. Kwon ◽

E. J. Cha

Keyword(s):

Stability Analysis ◽

Linear Systems ◽

Tracking Control ◽

Linear Matrix ◽

Time Varying ◽

Output Tracking ◽

Output Tracking Control ◽

Tracking Controller ◽

Delay Dependent ◽

Delay Dependent Stability

The problem of stability analysis andH∞output tracking control for linear systems with time-varying delays is studied. First, by construction of a newly augmented Lyapunov-Krasovskii functional, a delay-dependent stability criterion for nominal systems with time-varying delays is established in terms of linear matrix inequalities (LMIs). Second, based on theH∞sense, the proposed method is extended to solve the problem of designing anH∞output tracking controller to track the output of a given reference model. Finally, three examples are included to show the validity and effectiveness of the presented delay-dependent stability and theH∞output tracking controller design.

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Adaptive Output Tracking Control for Nonlinear Systems with Failed Actuators and Aircraft Flight System Applications

Mathematical Problems in Engineering ◽

10.1155/2015/357078 ◽

2015 ◽

Vol 2015 ◽

pp. 1-14

Author(s):

Chuanjing Hou ◽

Lisheng Hu ◽

Yingwei Zhang

Keyword(s):

Nonlinear Systems ◽

Tracking Control ◽

Closed Loop ◽

High Gain ◽

Compensation Scheme ◽

Closed Loop System ◽

Tracking Errors ◽

Output Tracking ◽

Output Tracking Control ◽

The Stability

An adaptive failure compensation scheme using output feedback is proposed for a class of nonlinear systems with nonlinearities depending on the unmeasured states of systems. Adaptive high-gain K-filters are presented to suppress the nonlinearities while the proposed backstepping adaptive high-gain controller guarantees the stability of the closed-loop system and small tracking errors. Simulation results verify that the adaptive failure compensation scheme is effective.

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Output tracking control for TRMS based on time receding optimal observation of disturbances

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/58/5/14867 ◽

2020 ◽

Vol 58 (5) ◽

pp. 623

Author(s):

Đàm Bảo Lộc ◽

Nguyễn Duy Cương ◽

Nguyễn Doãn Phước

Keyword(s):

Tracking Control ◽

Bilinear System ◽

Exact Linearization ◽

Output Tracking ◽

Output Tracking Control ◽

Optimal Observation ◽

Tracking Controller ◽

Output System ◽

Optimal Disturbances ◽

Twin Rotor

The paper presents an approach to design the adaptive output tracking controller for disturbed Twin Rotor Multi-Input Multi-Output System (TRMS) by using a time receding observer of functional disturbances for compensative control purpose, without using conventional methods as a neural network. To do this, first the disturbed Euler-Lagrange model of TRMS is converted to an equivalent bilinear form. And then, secondly an optimal disturbances estimator for this disturbed bilinear system is constructed based on time receding minimizing their effect. The complete output tracking controller for TRMS is created then by combining an exact linearization controller with the proposed disturbances estimation mechanism. Simulation results show that the here suggested controller meet completely the expected output tracking performances.

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