A Bumpless Transfer Control Strategy for Switched Systems and Its Application to an Aero-Engine

Abstract This study concentrates on the problem of $H_\infty $ output tracking bumpless transfer control for a category of switched linear systems (SLSs). The $H_\infty $ output tracking bumpless transfer control problem is to ensure the SLSs to satisfy the bumpless transfer performance and the $H_\infty $ output tracking properties by co-design of a switching rule and a series of controllers. Firstly, a concept of the bumpless transfer performance for a system in this class is presented. Then, via a Lyapunov function scheme, criteria guaranteeing the bumpless transfer performance and the $H_\infty $ output tracking properties are established. The criteria allow the problem of the $H_\infty $ output tracking bumpless transfer control for subsystems is unsolvable. Finally, an example of controlling a turbofan model is offered for the verification on the effectiveness of the presented control strategy.

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Design and Implementation of a Hybrid Control Strategy for an Active Vibration Isolation System

Dynamic Systems and Control ◽

10.1115/imece2002-32081 ◽

2002 ◽

Author(s):

Yisheng Zhang ◽

Andrew G. Alleyne ◽

Danian Zheng

Keyword(s):

Control Strategy ◽

High Performance ◽

Vibration Isolation ◽

Hybrid Control ◽

Transfer Scheme ◽

Isolation System ◽

Plant Variation ◽

Bumpless Transfer ◽

Active Vibration ◽

Active Vibration Isolation

Controller design methodologies based on a single controller are often unable to provide both high performance (i.e., tracking bandwidth) and desired robustness (i.e. retaining stability) in the presence of uncertainty or plant variation. This paper presents a hybrid control strategy to circumvent the basic trade-off between performance and robustness from an individual controller. This hybrid control strategy utilizes a robust controller for guaranteed robustness when the plant model is not well known, and makes an adaptive controller active for high performance after sufficient plant information has been collected on-line. To avoid a degraded transient after controller switching, a bumpless transfer scheme is designed and incorporated into this hybrid control strategy. This bumpless transfer design is a novel extension from a conventional latent tracking bumpless transfer design for a SISO plant with 1 DOF controllers to either a SISO plant with multiple DOF controllers or a MIMO plant. Experimental results implemented on an active vibration isolation testbed demonstrate the effectiveness of the hybrid control strategy including the bumpless transfer design.

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Anti-Disturbance Bumpless Transfer Control for Switched Systems With its Application to Switched Circuit Model

IEEE Transactions on Circuits & Systems II Express Briefs ◽

10.1109/tcsii.2020.2970068 ◽

2020 ◽

Vol 67 (12) ◽

pp. 3177-3181 ◽

Cited By ~ 6

Author(s):

Ying Zhao ◽

Shuanghe Yu ◽

Jie Lian

Keyword(s):

Switched Systems ◽

Circuit Model ◽

Bumpless Transfer

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Reconfiguration for Sensor Failure of Aero-Engine Electronic Control System Based on the MRAC

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.602-605.1367 ◽

2014 ◽

Vol 602-605 ◽

pp. 1367-1371

Author(s):

Zhi Bo Shi ◽

Tao Liu ◽

Dan Sun

Keyword(s):

Adaptive Control ◽

Control System ◽

Control Strategy ◽

Fault Tolerant ◽

Fault Tolerant Control ◽

Mathematic Model ◽

Electronic Control ◽

Sensor Failure ◽

Electronic Control System ◽

Aero Engine

In the paper, the fault-tolerant control strategy for the aero-engine electronic control system is researched based on the Model Reference Adaptive Control method. In the design process, a new reference model design method is proposed with the Raccatti equation, which can guarantee the reconfiguration system have satisfactory performance. According to the sensor failure models, the failure system mathematic model is given. Lyapunov stability theory was applied to obtain the adaptive control law through design a Lyapunov function, which can ensure the strictly positive realness and global asymptotic stability for the reconfiguration control system. For the typical sensor failures, the reconfiguration effect with the control strategy is simulated and verified in the Matlab, which revealed that the aero-engine control system could operate well under the failure with the fault-tolerant control.

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