Active Vibration Control on a Smart Composite Structure using Modal-Shaped Sliding Mode Control

2021 ◽  
pp. 1-37
Author(s):  
Jonathan Rodriguez ◽  
Manuel Collet ◽  
Simon Chesne
Keyword(s):  
Vibration Control ◽  
Composite Structure ◽  
Sliding Mode ◽  
Active Vibration Control ◽  
Switching Control ◽  
Piezoelectric Sensors ◽  
Sliding Surface ◽  
Nonlinear Controller ◽  
Active Vibration ◽  
Nonlinear Switching

Abstract This paper proposes an active modal vibration control method based on a modal sliding mode controller applied to a smart material composite structure with integrated piezoelectric transducers as actuators and sensors. First, the electromechanical coupled system is identified using a modal reduced-order model. The sliding surface is based on the modal-filtered states and designed using a general formulation allowing the control of multiple vibration modes with multiple piezoelectric sensors and actuators. The performance and stability of the nonlinear controller are addressed and confirmed with the experimental results on a composite smart spoiler-shaped structure. The nonlinear switching control signal, based on the modal-shaped sliding surface improves the performances of the linear part of the control while maintaining not only stability but also robustness. The attenuation level achieved on the target modes on all piezoelectric sensors starts from -14dB up to -22dB, illustrating the strong potential of nonlinear switching control methods in active vibration control.

scholarly journals Ultra-low frequency active vibration control for cold atom gravimeter based on sliding-mode robust algorithm

2018 ◽  
Vol 67 (2) ◽  
pp. 020702
Author(s):  
Luo Dong-Yun ◽  
Cheng Bing ◽  
Zhou Yin ◽  
Wu Bin ◽  
Wang Xiao-Long ◽  
...  
Keyword(s):  
Vibration Control ◽  
Sliding Mode ◽  
Active Vibration Control ◽  
Low Frequency ◽  
Cold Atom ◽  
Robust Algorithm ◽  
Active Vibration

Investigation of active vibration control system for trailed two-wheeled implements

2011 ◽  
Vol 226 (1) ◽  
pp. 55-65 ◽  
Author(s):  
H-J Kim
Keyword(s):  
Control System ◽  
Vibration Control ◽  
Sliding Mode ◽  
Model Simulation ◽  
Active Vibration Control ◽  
The Body ◽  
Actual Performance ◽  
The Road ◽  
Force Tracking ◽  
Active Vibration

This paper presents an active vibration control (AVC) system for trailed two-wheeled implements (TTWI) equipped with high precision electronic devices. With the aim of isolating disturbance forces to the devices, a hydraulically actuated vibration control system is devised. In order to suppress vibratory motions to the body components, considering the TTWI system characteristics, a vibration control and a force tracking control strategy is adopted. As the vibration controller, the adaptive and skyhook control schemes are applied. From full order and reduced order model for the actuating module, as the tracking controller, the sliding mode control scheme is adopted regarding parameter variations. On the basis of the roll plane TTWI system model, simulation work is performed. Finally, after implementation of the experimental setup with the TTWI system and the road simulating module considering practical requirements, actual performance of the devised AVC system is evaluated in various disturbance conditions.

Quarter-Cycle Switching Control for Switch-Shunted Dampers

2004 ◽  
Vol 126 (2) ◽  
pp. 278-283 ◽  
Author(s):  
Gregg D. Larson ◽  
Kenneth A. Cunefare
Keyword(s):  
Vibration Control ◽  
Piezoelectric Materials ◽  
Active Vibration Control ◽  
Switching Control ◽  
Single Frequency ◽  
Effective Bandwidth ◽  
Control Logic ◽  
Resonant States ◽  
Active Vibration ◽  
Specific Implementation

Significant interest has been generated by the possibilities of active vibration control through the implementation of state switching, with a specific implementation embodied through piezoceramic shunting. A state-switched absorber (SSA) is a vibration absorber that has the unique ability to change its resonant state amongst multiple distinct resonant states while in motion, thereby increasing the effective bandwidth over that of a single frequency device and thereby allowing control of multi-frequency, transient, and time-varying disturbances. In contrast, a switch-shunted damper (SSD) is a variant of an SSA that is used to increase the damping of the structure to which the damper is applied. Active vibration control applications discussed in the literature indicate the potential advantages of SSDs which employ piezoelectric ceramics as switchable springs with control algorithms that require switching states at points of non-zero strain. However, consideration of the constitutive equations for piezoelectric materials indicates a discontinuity in the electrical and mechanical conditions imposed by switching the stiffness at non-zero strains. A prototype SSD has been built and tested to experimentally investigate switching control logic and electrical and mechanical discontinuities at switching points; experimental measurements with this prototype SSD indicate that quarter-cycle switching algorithms which include switching states at a condition of maximum strain yield enhanced damping effectiveness but also leads to the generation of potentially undesirable mechanical transients.

Vibration Control of an Engine Mount for UAV Activated by Piezostack Actuator

2011 ◽  
Vol 52-54 ◽  
pp. 358-364
Author(s):  
Jong Seok Oh ◽  
Seung Bok Choi
Keyword(s):  
Vibration Control ◽  
Sliding Mode ◽  
Active Vibration Control ◽  
Effective Control ◽  
Control Performance ◽  
Vibration Level ◽  
Frequency Domains ◽  
Active Vibration ◽  
Engine Mount ◽  
Active Engine

In this paper, vibration control performance of piezostack active engine mount system for unmanned aero vehicle (UAV) is evaluated via computer simulation. As a first step, the dynamic model of engine mount system which is supported at three points is derived. In the configuration of engine mount system, the inertia type of piezostack based active mount is installed for active vibration control. Then, the vibration level of UAV engine is measured. To attenuate the vibration which is transmitted from engine, a sliding mode controller which is robust to uncertain parameters is designed. Vibration control performances of active engine mount system are evaluated at each mount and center of gravity. Effective Control results are presented in both time and frequency domains.

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