scholarly journals An Efficient Modal Control Strategy for the Active Vibration Control of a Truss Structure

2007 ◽  
Vol 14 (6) ◽  
pp. 393-406 ◽  
Author(s):  
Ricardo Carvalhal ◽  
Vicente Lopes Júnior ◽  
Michael J. Brennan
Keyword(s):  
Vibration Control ◽  
Control Strategy ◽  
Active Vibration Control ◽  
Primary Source ◽  
Weighting Factor ◽  
Truss Structure ◽  
Modal Control ◽  
Control Effort ◽  
Active Vibration ◽  
Minimal Reduction

In this paper an efficient modal control strategy is described for the active vibration control of a truss structure. In this approach, a feedback force is applied to each mode to be controlled according to a weighting factor that is determined by assessing how much each mode is excited by the primary source. The strategy is effective provided that the primary source is at a fixed position on the structure, and that the source is stationary in the statistical sense. To test the effectiveness of the control strategy it is compared with an alternative, established approach namely, Independent Modal Space Control (IMSC). Numerical simulations show that with the new strategy it is possible to significantly reduce the control effort required, with a minimal reduction in control performance.

Realization of Active Vibration Control on Piezoelectric Intelligent Flexible Beam

2011 ◽  
Vol 383-390 ◽  
pp. 5580-5585
Author(s):  
Da Fang Wu ◽  
Liang Huang ◽  
Fei Su ◽  
Cheng Xiang Liu ◽  
Hong Yuan Yang ◽  
...  
Keyword(s):  
Vibration Control ◽  
Cantilever Beam ◽  
Control Strategy ◽  
Vibration Mode ◽  
Vibration Suppression ◽  
Active Vibration Control ◽  
Flexible Beam ◽  
Modal Control ◽  
Structural Damping ◽  
Active Vibration

In this paper, the principle and method of active vibration control of a flexible cantilever beam with PZT actuators was studied. A strategy of active control on the first and second order vibration mode of the flexible cantilever beam are determined and implemented by using the independent modal control. Eexperimental results show that the structural damping of the flexible cantilever beam is improved effectively and excellent effect of vibration suppression is achieved with the control strategy.

Study on Active Vibration Control

2013 ◽  
Vol 744 ◽  
pp. 528-531
Author(s):  
Feng Xing ◽  
Jian Guo Cao ◽  
Jing Wang ◽  
Chang Yong Deng
Keyword(s):  
Vibration Control ◽  
Control Strategy ◽  
Active Vibration Control ◽  
Piezoelectric Element ◽  
Body Structure ◽  
External Energy ◽  
Adaptive Controllers ◽  
Response System ◽  
Active Vibration ◽  
Fuzzy Control Strategy

This paper analyses the active vibration control technology on the piezoelectric ceramics car-body pieces in fuzzy control Strategy. Adaptive controllers, based on fuzzy logics, are synthesized for the control of vibration of body structure. Piezoelectric element, control system and body structure have been combined to be a intelligent response system to external drive and it’s own vibration. This system can effect reducing body structure’s reaction from environmental load with external energy. The availability of the control strategy has been confirmed by experiments.

Study on Active Vibration Control

2013 ◽  
Vol 562-565 ◽  
pp. 1527-1530
Author(s):  
Feng Xing ◽  
Jian Guo Cao ◽  
Jing Wang ◽  
Chang Yong Deng
Keyword(s):  
Vibration Control ◽  
Control Strategy ◽  
Active Vibration Control ◽  
Piezoelectric Element ◽  
Body Structure ◽  
External Energy ◽  
Adaptive Controllers ◽  
Response System ◽  
Active Vibration ◽  
Fuzzy Control Strategy

This paper analyses the active vibration control technology on the piezoelectric ceramics car-body pieces in fuzzy control Strategy. Adaptive controllers, based on fuzzy logics, are synthesized for the control of vibration of body structure. Piezoelectric element, control system and body structure have been combined to be a intelligent response system to external drive and it’s own vibration. This system can effect reducing body structure’s reaction from environmental load with external energy. The availability of the control strategy has been confirmed by experiments.

A Comparative Study and Analysis of Semi-Active Vibration-Control Systems

2002 ◽  
Vol 124 (4) ◽  
pp. 593-605 ◽  
Author(s):  
Nader Jalili
Keyword(s):  
Vibration Control ◽  
Control Systems ◽  
Energy Requirement ◽  
Active Vibration Control ◽  
Parameter Tuning ◽  
Practical Implementation ◽  
Control Effort ◽  
Theoretical Concepts ◽  
Practical Applications ◽  
Active Vibration

Semi-active (SA) vibration-control systems are those which otherwise passively generated damping or spring forces are modulated according to a parameter tuning policy with only a small amount of control effort. SA units, as their name implies, fill the gap between purely passive and fully active vibration-control systems and offer the reliability of passive systems, yet maintain the versatility and adaptability of fully active devices. During recent years there has been considerable interest towards practical implementation of these systems for their low energy requirement and cost. This paper briefly reviews the basic theoretical concepts for SA vibration-control design and implementation, and surveys recent developments and control techniques for these systems. Some related practical applications in vehicle suspensions are also presented.

Active vibration control of a hoop truss structure with piezoelectric bending actuators based on a fuzzy logic algorithm

2018 ◽  
Vol 27 (8) ◽  
pp. 085030 ◽  
Author(s):  
Yajun Luo ◽  
Xue Zhang ◽  
Yahong Zhang ◽  
Yuandong Qu ◽  
Minglong Xu ◽  
...  
Keyword(s):  
Fuzzy Logic ◽  
Vibration Control ◽  
Active Vibration Control ◽  
Truss Structure ◽  
Fuzzy Logic Algorithm ◽  
Active Vibration

scholarly journals Active Vibration Control of the Sting Used in Wind Tunnel: Comparison of Three Control Algorithms

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Xing Shen ◽  
Yuke Dai ◽  
Mingxuan Chen ◽  
Lei Zhang ◽  
Li Yu
Keyword(s):  
Optimal Control ◽  
Wind Tunnel ◽  
Vibration Control ◽  
Control Algorithm ◽  
Active Vibration Control ◽  
Linear Quadratic Regulator ◽  
Real Time Control ◽  
Linear Quadratic ◽  
Control Effort ◽  
Active Vibration

In wind tunnel tests, cantilever stings are often used as model-mount in order to reduce flow interference on experimental data. In this case, however, large-amplitude vibration and low-frequency vibration are easily produced on the system, which indicates the potential hazards of gaining inaccurate data and even damaging the structure. This paper details three algorithms, respectively, Classical PD Algorithm, Artificial Neural Network PID (NNPID), and Linear Quadratic Regulator (LQR) Optimal Control Algorithm, which can realize active vibration control of sting used in wind tunnel. The hardware platform of the first-order vibration damping system based on piezoelectric structure is set up and the real-time control software is designed to verify the feasibility and practicability of the algorithms. While the PD algorithm is the most common method in engineering, the results show that all the algorithms can achieve the purpose of over 80% reduction, and the last two algorithms perform even better. Besides, self-tuning is realized in NNPID, and with the help of the Observer/Kalman Filter Identification (OKID), LQR optimal control algorithm can make the control effort as small as possible. The paper proves the superiority of NNPID and LQR algorithms and can be an available reference for vibration control of wind tunnel system.

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