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.
Papers published on a yearly basis
Papers
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TL;DR: With these controllers, it is demonstrated via simulations that vibration suppression, within certain excitation frequency bands, can be improved or be as effective as those in AVC applications without delays.
23 citations
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TL;DR: In this paper, a theoretical model for an active squeeze film damper (ASFD) is introduced as an option in the vibration control field, which is based on the SFD with the controllability characteristics of magnetic bearing, which allows the development of variable force, and a change in fluid film stiffness and damping.
23 citations
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TL;DR: In this article, a four-node Piezo-Elastic field consistent plate element based on Mindlin-Reissner theory is developed and the finite element procedure is implemented in MATLAB platform.
23 citations
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TL;DR: In this article, the relationship between the tool tip vibration and the turret measurement point vibration is obtained through impact tests, and the accuracy of the measurement method is checked by comparing the calculated tool tip vibrations calculated from the vibration of the turret measurements point to the directly measured results, which is measured via an accelerometer installed below the tooltip.
Abstract: The tool tip vibration measurement has a great significance for online surface topography prediction and active vibration control. Many measurement methods have been developed. However, most of these methods are difficult to be applied in actual machining process for the following problems: the chips and cutting fluid will cause damage to the sensor or distort its measurement results and the sensor must be installed again when replacing the cutting tool. In order to overcome the above problems, this paper proposes an indirect measurement method: the vibration of the tool tip is obtained from the vibration of the measurement point on the turret. The relationship between the tool tip vibration and the turret measurement point vibration is obtained through impact tests. The vibration of the measurement point on the turret is measured via an accelerometer, which is easy to install. The measurement point is so far away from the cutting area and chip evacuation zone that the accelerometer and its measurement results will not be affected by the chips and cutting fluid. The accuracy of the measurement method is checked by comparing the calculated tool tip vibration calculated from the vibration of the turret measurement point to the directly measured results, which is measured via an accelerometer installed below the tool tip. The comparison results show that the calculated tool tip vibration at main frequencies as well as low frequencies has a high accuracy. Moreover, the effectiveness of the measurement method is verified through machined surface profile.
23 citations
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TL;DR: In this paper, a thorough analysis of six delayed resonator configurations is performed, considering either lumped or distributed delays, feedback is taken from acceleration, velocity or position measurements, and the force and energy demands from the resonator feedback are studied with respect to the absorber physical parameters.
23 citations