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: In this paper, a vertical quasi-zero stiffness (QZS) vibration isolator with a mechanism for adjusting restoring force is presented, where the restoring force provided by horizontally placed springs can be converted into the vertical restoring force of the isolator.
28 citations
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TL;DR: In this paper, a finite element model based on First-Order Shear Deformation Theory (FSDT) is developed for the static flexural shape and vibration control of a glass fiber/polyester composite plate bonded with piezoelectric actuator and sensor patches.
28 citations
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TL;DR: In this paper, a two mass vibration isolator was proposed for linear reciprocating machines. But the isolator is an elastomer with a damping ratio of at least 0.1 sandwiched between two retainers.
Abstract: A two mass vibration isolator particularly suited to a linear reciprocating machine. Vibration into and out of the machine is attenuated by an isolator placed between the machine and its mounting frame. The isolator is an elastomer with a damping ratio of at least 0.1 sandwiched between two retainers.
28 citations
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TL;DR: The Smart Spring concept as discussed by the authors is a unique approach that is designed to actively control combinations of dynamic impedance characteristics of a structure, such as the stiffness, damping, and effective mass to suppress vibration.
Abstract: Most active vibration suppression approaches have attempted to suppress structural vibrations through the use of active material actuators, such as piezoceramic, that are incorporated into a structure to act directly against vibratory loads. These approaches require the actuators to simultaneously supply significant force and deflection to effectively suppress vibration. Unfortunately, successful implementation of these approaches has been hindered by the electromechanical limitations of piezoceramic actuators due to high power requirements in active vibration control applications. The Smart Spring concept is a unique approach that is designed to actively control combinations of dynamic impedance characteristics of a structure, such as the stiffness, damping, and effective mass to suppress vibration. The Smart Spring does not use actuators to perform work directly against excitation loads, but rather adaptively varies the effective structural impedance properties. Therefore. the piezoceramic actuators in the Smart Spring are not required to simultaneously produce large forces and deflections. Thus, the concept requires considerably less power because it enables active vibration control in an indirect manner. This study demonstrates the ability of the Smart Spring to control dynamic impedance characteristics of a structure through numerical simulations and experimental investigations. In addition, the development of a feedback control system is demonstrated. According to the control strategy, the impedance characteristics of the Smart Spring are continuously changing in order to maximize the extraction of the mechanical energy of the system.
28 citations
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TL;DR: In this paper, the authors describe a control system designed to improve the surface finish during turning by reducing the vibration of the machine tool, which is achieved by sensing the relative vibration between the tool and the workpiece, generating a force which tends to neutralize the excitation.
28 citations