Rejecting multiple-period disturbances: active vibration control of a two degree-of-freedom piezoelectric flexible structure system

2014 ◽  
Vol 21 (16) ◽  
pp. 3368-3382 ◽  
Author(s):  
Chi-Ying Lin ◽  
Wei-Hsiang Chiu ◽  
Jonqlan Lin
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Degree Of Freedom ◽  
Flexible Structure ◽  
Structure System ◽  
Active Vibration ◽  
Two Degree Of Freedom

scholarly journals Two-Degree-of-Freedom Active Vibration Control of a Prototyped “Smart” Rotor

2011 ◽  
Vol 19 (2) ◽  
pp. 284-296 ◽  
Author(s):  
Jan-Willem van Wingerden ◽  
Anton Hulskamp ◽  
Thanasis Barlas ◽  
Ivo Houtzager ◽  
Harald Bersee ◽  
...  
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Degree Of Freedom ◽  
Active Vibration ◽  
Two Degree Of Freedom

scholarly journals Model Set Identification and Active Vibration Control of Flexible Structure

2001 ◽  
Vol 37 (6) ◽  
pp. 502-509
Author(s):  
Hiroaki FUKUSHIMA ◽  
Yue WU ◽  
Toshiharu SUGIE ◽  
Gi-Hwan BAE ◽  
Yoshiyuki SUZUKI
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Flexible Structure ◽  
Active Vibration ◽  
Model Set ◽  
Set Identification

Transmissibilities of Two-Degree-of-Freedom Systems for Semi-Active Vibration Control

Aerospace ◽  
2006 ◽  
Author(s):  
H. F. Lam ◽  
W. H. Liao
Keyword(s):  
Control Systems ◽  
Active Control ◽  
Transfer Functions ◽  
Active Vibration Control ◽  
Degree Of Freedom ◽  
Reference Systems ◽  
Active Systems ◽  
Active Vibration ◽  
Equivalent Systems ◽  
Two Degree Of Freedom

Transmissibilities for two-degree-of-freedom (2DoF) passive systems have been extensively investigated in the past. However, for semi-active control systems, the transmissibilities are rarely analyzed. The expressions of non-dimensional transmissibilities for the semi-active control systems are not found. There are no closed-form transfer functions for general semi-active control systems. The control algorithms for semi-active systems need to be specified first. Therefore, three reference systems (skyhook, groundhook, and their hybrid) are proposed. These equivalent systems are the references for the semi-active control systems to achieve. In this paper, the 2DoF skyhook, groundhook and hybrid systems for semi-active control are studied. The displacement and acceleration transmissibilities of those three reference systems are formulated and analyzed. Their transmissibilities are also compared with the passive system. Each of reference systems is classified as Ideal and Non-Ideal systems. The differences between the Ideal and Non-Ideal systems are also discussed. The optimal systems and their corresponding parameters are identified.

scholarly journals Identification for Active Vibration Control of Flexible Structure Based on Prony Algorithm

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Xianjun Sheng ◽  
Yuanli Kong ◽  
Fengyun Zhang ◽  
Rui Yang
Keyword(s):  
Vibration Control ◽  
Fiber Composite ◽  
Active Vibration Control ◽  
Flexible Structures ◽  
Response Speed ◽  
Step Response ◽  
Flexible Structure ◽  
Prony Algorithm ◽  
Active Vibration ◽  
Pointing Precision

Flexible structures have been widely used in many fields due to the advantages of light quality, small damping, and strong flexibility. However, flexible structures exhibit the vibration in the process of manipulation, which reduces the pointing precision of the system and causes fatigue of the machine. So, this paper focuses on the identification method for active vibration control of flexible structure. The modal parameters and transfer function of the system are identified from the step response signal based on Prony algorithm, while the vibration is attenuated by using the input shaping technique designed according to the parameters identified from the Prony algorithm. Eventually, the proposed approach is applied to the most common flexible structure, a piezoelectric cantilever beam actuated by Macro Fiber Composite (MFC). The experimental results demonstrate that the Prony algorithm is very effective and accurate on the dynamic modeling of flexible structure and input shaper could significantly reduce the vibration and improve the response speed of system.

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