Topic
Active vibration control
About: Active vibration control is a research topic. Over the lifetime, 6770 publications have been published within this topic receiving 76599 citations. The topic is also known as: active vibration damping.
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TL;DR: The experimental measurement results demonstrate that the binocular vision sensors can detect the low-frequency bending and torsional vibration effectively and the designed RBF can suppress the bending vibration more quickly than the designed PD controller owing to the adjustment of the RBF control, especially for the small amplitude residual vibrations.
27 citations
TL;DR: In this paper, a vibration actuator using a magnetic circuit device is described, and a supporting arrangement elastically supports the magnetic circuit devices and a vibrating coil is inserted into the magnetic gap of the device.
Abstract: In a vibration actuator using a magnetic circuit device (14), a supporting arrangement (23) elastically supports the magnetic circuit device. A coil (17) is inserted into a magnetic gap (15) of the magnetic circuit device and is supported by a vibration plate (19). The vibration actuator has a first operation mode in which the magnetic circuit device mainly vibrates to transmit vibration through the vibration plate to the outside, a second vibration mode in which the coil mainly vibrates to produce a buzzer sound through the vibration plate, and a third vibration mode in which the magnetic circuit device and the coil mainly vibrate to produce a sound corresponding to a speech through the vibration plate.
27 citations
Patent•
15 Nov 2006
TL;DR: In this article, a highly rigid vibration substrate is provided with rigid parts 61a, 61b fixedly provided columnarly or/and longitudinally between a display means 29 and a touch panel 24.
Abstract: PROBLEM TO BE SOLVED: To provide a highly rigid vibration substrate, and to secure high reliability as to vibration transferability, irrespective of a using attitude of the vibration substrate. SOLUTION: The vibration substrate is provided with rigid parts 61a, 61b fixedly provided columnarly or/and longitudinally between a display means 29 and a touch panel 24, and piezoelectric actuators 25a, 25b having a vibration action part 8a and central electrodes 3a, 3b and provided in prescribed positions between the display means 29 and the touch panel 24, or in prescribed positions of longitudinal portions of the rigid parts 61a, 61b, and the vibration action part 8a and the central electrodes 3a, 3b are overlapped along a direction to layer an input detecting means and the display means. By this composition, a highly rigid vibration casing is provided with a property capable of restraining a dimensional change at a low level against a bending force and a torsional torque. COPYRIGHT: (C)2008,JPO&INPIT
27 citations
TL;DR: Numerical simulations reveal that the novel control law proposed in (ii) is the most efficient in terms of vibration response and control cost, and two novel control laws inspired by the mechanical models of a viscoelastic semi-solid are proposed.
27 citations
TL;DR: In this paper, a new type of a MR damper is proposed for an integrated isolation mount for an ultraprecision manufacturing system, which can eliminate a dry friction of the damper to remove the tiny vibration as well as can produce enough damping force to attenuate the transient vibration.
Abstract: This article presents a new type of a MR damper designed for an integrated isolation mount for an ultraprecision manufacturing system. The vibration sources of the ultraprecision system can be classified as two: one is environmental vibration from the floor, and the other is transient vibration occurred from the stage movement. The transient vibration occurred from the stage movement has adverse effect to the manufacturing process because the vibration scale is quite larger than other vibrations. It is also known that the moving stage needs to be isolated from tiny vibrations to be occurred from the floor. Therefore, in this research in order to attenuate both the transient and tiny vibrations, a new type of MR damper is proposed and its performance is evaluated. The proposed MR damper can eliminate a dry friction of the damper to remove the tiny vibration as well as can produce enough damping force to attenuate the transient vibration. The MR damper is designed on the basis of Bingham model of a MR fluid...
27 citations