Torsional Vibration Control by Means of an Active Vibration Absorber

1995 ◽  
Author(s):  
Dinu Taraza ◽  
Horst Wölfel
Keyword(s):  
Vibration Control ◽  
Torsional Vibration ◽  
Vibration Absorber ◽  
Active Vibration

Research on active vibration control of flexible wing based on MFC actuator

2020 ◽  
Vol 64 (1-4) ◽  
pp. 565-571
Author(s):  
Yajun Luo ◽  
Fengfan Yang ◽  
Linwei Ji ◽  
Yahong Zhang ◽  
Minglong Xu ◽  
...  
Keyword(s):  
Control System ◽  
Vibration Control ◽  
Torsional Vibration ◽  
Fiber Composite ◽  
Active Vibration Control ◽  
Current Control ◽  
Control Effect ◽  
Flexible Wing ◽  
Control Scheme ◽  
Active Vibration

An active vibration control scheme was proposed based on Macro Fiber Composite (MFC) actuators for the bending and torsional vibration control of large flexible lightweight wing structures. Firstly, a finite element modeling and modal analysis of a flexible wing are carried out. Further, the number, type, and location distribution of the MFC actuators bonded on the supported beam of the wing are designed. Then, the actuated characteristics of the two kinds of MFC actuators required for bending and torsional vibration controls was theoretically analyzed. The simulation model of the overall vibration control system was also finally obtained. Finally, through ANSYS simulation analysis, the vibration control effect of the current control system on the first two-order low-frequency modal response of the wing structure is given. The simulation results show that the proposed active vibration control scheme has specific feasibility and effectiveness.

scholarly journals Active vibration control for high-rise buildings using a dynamic vibration absorber driven by servomotor.

1991 ◽  
Vol 57 (534) ◽  
pp. 472-477 ◽  
Author(s):  
Kazuo YOSHIDA ◽  
Tarou SHIMOGOU ◽  
Junji HASHIMOTO ◽  
Tetsuo SUZUKI ◽  
Mitsuru KAGEYAMA ◽  
...  
Keyword(s):  
Vibration Control ◽  
Active Vibration Control ◽  
Vibration Absorber ◽  
Dynamic Vibration Absorber ◽  
High Rise ◽  
Dynamic Vibration ◽  
Active Vibration

Efficient Vibration Control with a Semi-Active Vibration Absorber in a Semiconductor Fab

2014 ◽  
Vol 564 ◽  
pp. 143-148 ◽  
Author(s):  
Teng Sheng Su ◽  
Chen Far Hung ◽  
Shu Hua Chang ◽  
Ting Hao Wu ◽  
Luh Maan Chang
Keyword(s):  
Control System ◽  
Vibration Control ◽  
Natural Frequency ◽  
Cantilever Beam ◽  
Active Vibration Control ◽  
Control Process ◽  
Vibration Absorber ◽  
Servo Motor ◽  
Resonant Condition ◽  
Active Vibration

In this paper a new type of semi-active vibration absorber has been developed. The vibration absorber consists of mass block, cantilever beam, magnet lock system, vibration and distance sensors, controller and servo motor. The mass block is fixed on the tip of cantilever beam, and the control process is driven by a servo motor and a transmit gears. Portion of cantilever was cut in form of gear tracks, which can be driven by servo motor through transmit gear to regulate the length of the cantilever beam, and the natural frequency of absorber will also be regulated. After the mass locates in right position (i.e. the natural frequency of absorber is in assigned condition), the magnetic lock will clamp the cantilever beam. The design has the benefit of simplified control system, and extra unknown vibration modes will be averted. A fabrication prototype of the proposed semi-active vibration absorber is constructed and tested to demonstrate the application and modeling of the new cantilever beam damper. By performing the experimental work, the semi-active vibration control system is designed not only for reduce vibration level in resonant condition, but also considered for vibration attenuation in non-resonant conditions.

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