scholarly journals Design of Particle/Granules Damper for Vertical Vibration with Approximate Analysis

2013 ◽  
Vol 7 (4) ◽  
pp. 367-377 ◽  
Author(s):  
Masanobu INOUE ◽  
Isao YOKOMICHI ◽  
Koju HIRAKI
Keyword(s):  
Vertical Vibration ◽  
Approximate Analysis

640 Design of Particle Damper for Vertical Vibration with Approximate Analysis

2012 ◽  
Vol 2012 (0) ◽  
pp. _640-1_-_640-8_
Author(s):  
Masanobu INOUE ◽  
Isao YOKOMICHI ◽  
Koju HIRAKI ◽  
Seiya NAKASHIMA ◽  
Makoto MIYAUCHI
Keyword(s):  
Vertical Vibration ◽  
Approximate Analysis

scholarly journals Design of Particle Damper for Vertical Vibration with Approximate Analysis

2013 ◽  
Vol 79 (801) ◽  
pp. 1280-1289
Author(s):  
Masanobu INOUE ◽  
Isao YOKOMICHI ◽  
Koju HIRAKI
Keyword(s):  
Vertical Vibration ◽  
Approximate Analysis

A 3-DOF Inchworm Using Levitation Caused by Vertical Vibration

2014 ◽  
Vol 134 (11) ◽  
pp. 1716-1723 ◽  
Author(s):  
Akihiro Torii ◽  
Mitsuhiro Nishio ◽  
Kae Doki ◽  
Akiteru Ueda
Keyword(s):  
Vertical Vibration

scholarly journals Tilt Active Vibration Isolation Using Vertical Pendulum and Piezoelectric Transducer with Parallel Controller

2021 ◽  
Vol 11 (10) ◽  
pp. 4526
Author(s):  
Lihua Wu ◽  
Yu Huang ◽  
Dequan Li
Keyword(s):  
Piezoelectric Transducer ◽  
Vibration Isolation ◽  
Vertical Vibration ◽  
Open Loop ◽  
Negative Effects ◽  
Voltage Controller ◽  
Hysteresis Nonlinearity ◽  
Passive Vibration Isolation ◽  
Active Vibration ◽  
Active Vibration Isolation

Tilt vibrations inevitably have negative effects on some precise engineering even after applying horizontal and vertical vibration isolations. It is difficult to adopt a traditional passive vibration isolation (PVI) scheme to realize tilt vibration isolation. In this paper, we present and develop a tilt active vibration isolation (AVI) device using a vertical pendulum (VP) tiltmeter and a piezoelectric transducer (PZT). The potential resolution of the VP is dependent on the mechanical thermal noise in the frequency bandwidth of about 0.0265 nrad, which need not be considered because it is far below the ground tilt of the laboratory. The tilt sensitivity of the device in an open-loop mode, investigated experimentally using a voltage controller, is found to be (1.63±0.11)×105 V/rad. To compensate for the hysteresis nonlinearity of the PZT, we experimentally established the multi-loop mathematical model of hysteresis, and designed a parallel controller consisting of both a hysteresis inverse model predictor and a digital proportional–integral–differential (PID) adjuster. Finally, the response of the device working in close-loop mode to the tilt vibration was tested experimentally, and the tilt AVI device showed a good vibration isolation performance, which can remarkably reduce the tilt vibration, for example, from 6.0131 μrad to below 0.0103 μrad.

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