Impulsive Control of the Rotor-Stator Rub Based on Phase Characteristic

Xu, Jinming; Li, Qunhong; Wang, Shimin

doi:10.1155/2014/495747

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…Their study provided a theoretical reference for vibration control and the optimal design of rotating machinery. Xu et al [24] suggested an impulsive control method to eliminate the rotor-stator rubbing, based on the phase characteristic. It utilized the vibration energy and the phase difference to trigger the control of the rotor-stator rubbing by impulse.…”

Section: Introductionmentioning

confidence: 99%

Study on a Fault Mitigation Scheme for Rub-Impact of an Aero-Engine Based on NiTi Wires

Pan

Liu³

et al. 2022

Sensors

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The aim of this study was to solve the frequently occurring rotor-stator rub-impact fault in aero-engines without causing a significant reduction in efficiency. We proposed a fault mitigation scheme, using shape memory alloy (SMA) wire, whereby the tip clearance between the rotor and the stator is adjusted. In this scheme, an acoustic emission (AE) sensor is utilized to monitor the rub-impact fault. An active control actuator is designed with pre-strained two-way SMA wires, driven by an electric current via an Arduino control board, to mitigate the rub-impact fault once it occurs. In order to investigate the feasibility of the proposed scheme, a series of tests on the material properties of NiTi wires, including heating response rate, ultimate strain, free recovery rate, and restoring force, were carried out. A prototype of the actuator was designed, manufactured, and tested under various conditions. The experimental result verifies that the proposed scheme has the potential to mitigate or eliminate the rotor-stator rub-impact fault in aero-engines.

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Section: Introductionmentioning

confidence: 99%

Study on a Fault Mitigation Scheme for Rub-Impact of an Aero-Engine Based on NiTi Wires

Pan

Liu³

et al. 2022

Sensors

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Generalized super-twisting sliding mode control with a nonlinear sliding surface for robust and energy-efficient controller of a quad-rotor helicopter

Sumantri

Uchiyama

Sano

2016

Proceedings of the Institution of Mechanical Engineers, Part C:

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This paper proposes a time-varying sliding surface for a second-order sliding mode controller to improve the control performance and energy efficiency of a quad-rotor helicopter. The time-varying sliding surface is designed with a nonlinear function to provide varying properties of the closed-loop dynamics in order to reduce energy consumption. It is shown that the second-order sliding mode technique, known as a generalized super twisting algorithm, providing a robust controller and a nonlinear sliding surface is effective in reducing the energy consumption. A Lyapunov stability analysis is described to prove the stability of the proposed method. The effectiveness and reliability of the proposed method are evaluated by performing experiments several times using a quad-rotor helicopter experimental testbed under wind disturbance.

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Impulsive Control of the Rotor-Stator Rub Based on Phase Characteristic

Cited by 2 publications

References 13 publications

Study on a Fault Mitigation Scheme for Rub-Impact of an Aero-Engine Based on NiTi Wires

Study on a Fault Mitigation Scheme for Rub-Impact of an Aero-Engine Based on NiTi Wires

Generalized super-twisting sliding mode control with a nonlinear sliding surface for robust and energy-efficient controller of a quad-rotor helicopter

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