An active vibration absorber of smart panel by using a decomposed parallel fuzzy control structure

2005 ◽  
Vol 18 (8) ◽  
pp. 985-998 ◽  
Author(s):  
J. Lin
Keyword(s):  
Fuzzy Control ◽  
Control Structure ◽  
Vibration Absorber ◽  
Active Vibration ◽  
Smart Panel

scholarly journals Development of Antiresonance Enforced Active Vibration Absorber System

1996 ◽  
Vol 39 (3) ◽  
pp. 464-469 ◽  
Author(s):  
Masashi Yasuda ◽  
Rongrong Gu ◽  
Osamu Nishihara ◽  
Hiroshi Matsuhisa ◽  
Kunio Ukai ◽  
...  
Keyword(s):  
Vibration Absorber ◽  
Active Vibration

On Adaptive-Passive Vibration Suppression Using Distributed-Parameter Absorbers

2000 ◽  
Author(s):  
Nader Jalili
Keyword(s):  
Vibration Suppression ◽  
Excitation Frequency ◽  
Wide Band ◽  
Distributed Parameter ◽  
Vibration Absorber ◽  
Frequency Bandwidth ◽  
Lumped Mass ◽  
Adaptive Capability ◽  
Active Vibration ◽  
Tuning Strategy

Abstract A semi-active vibration absorber with adaptive capability is presented to improve wide band vibration suppression characteristics of harmonically excited structures. The absorber subsection consists of a double-ended cantilever beam carrying an intermediate lumped mass. The adaptive capability is achieved through concurrent adjustment of the position of the moving mass, along the beam, to comply with the desired optimal performance. If such an absorber is attached to a vibrating body, it effectively absorbs vibrations at all frequencies that belong to the absorber frequency bandwidth. Numerical simulations are provided to verify the effectiveness of the proposed absorption scheme. It is shown that the tuning strategy tries to follow and match the absorber natural frequency with the excitation frequency. The optimally tuned absorber provides considerable vibration suppression improvement over the passive and de-tuned absorbers, for wide band excitation disturbances.

Two-Level Control Structure of Magnetic Bearings

1993 ◽  
Vol 5 (5) ◽  
pp. 438-442 ◽  
Author(s):  
Nobuyoshi Taguchi ◽  
◽  
Takakazu Ishimatsu ◽  
Takashi Shimomachi ◽  
◽  
...  
Keyword(s):  
Control System ◽  
Vibration Control ◽  
Control Structure ◽  
Active Vibration Control ◽  
Experimental Results ◽  
Magnetic Bearings ◽  
Active Magnetic Bearings ◽  
Level Control ◽  
Whirling Motion ◽  
Active Vibration

Active magnetic bearings have several advantages over conventional mechanical and fluid bearings. However, when the magnetic bearings are used at high rotational speeds, whirling motions and vibrations synchronized with the rotation of the rotor should be considered. In order to suppress these unfavorable vibrations of rotor which is supported by magnetic bearings, we have developed an active vibration control system with a two-level control structure. Experimental results show that our active bearings system effectively suppresses the whirling motion.

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