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Active vibration control

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structures by numerous researchers. For effective active vibration control, the structure should be smart enough to sense external disturbances and react accordingly. In order to develop an active structure (also known as smart structure), smart materials must be integrated or embedded with the
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Test bench for active vibration control at the Fraunhofer Institute LBF. A piezo driven active engine mount cancels the vibration resulting from several motors on top of the Mount by inducing countervibrations.
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Qiu, Zhi-cheng; Zhang, Xian-min; Wu, Hong-xin; Zhang, Hong-hua (2007-04-03). "Optimal placement and active vibration control for piezoelectric smart flexible cantilever plate".
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Vasques, C. M. A.; Dias Rodrigues, J. (2006-09-01). "Active vibration control of smart piezoelectric beams: Comparison of classical and optimal feedback control strategies".
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Sharma, Anshul; Kumar, Rajeev; Vaish, Rahul; Chauhan, Vishal S. (2014-09-01). "Lead-free piezoelectric materials' performance in structural active vibration control".
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Sharma, Anshul; Kumar, Rajeev; Vaish, Rahul; Chauhan, Vishal S. (2015-09-15). "Active vibration control of space antenna reflector over wide temperature range".
248:, then the control system may adapt to the ongoing vibration, thereby providing better cancellation than would have been provided simply by reacting to each new 268:
structure. The smart structure involves sensors (strain, acceleration, velocity, force etc.), actuators (force, inertial, strain etc.) and a control algorithm (
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is now also commercially available for reducing vibration in helicopters, offering better comfort with less weight than traditional passive technologies.
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Omidi, Ehsan; Mahmoodi, S. Nima (2015-02-27). "Consensus positive position feedback control for vibration attenuation of smart structures".
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is the active application of force in an equal and opposite fashion to the forces imposed by external
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For very large systems, pneumatic or hydraulic components that provide the high drive power required.
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Active vibration control has been successfully implemented for vibration attenuation of
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In the past, passive techniques were used. These include traditional vibration
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can be used to get better performance than a simple inverting amplifier.
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steps be used in an essentially vibration-free environment or the sub-
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The typical active vibration control system uses several components:
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is being affected by vibration. For example, the production of
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Many precision industrial processes cannot take place if the
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platform suspended by several active drivers (that may use
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Vibration control of active structures: An Introduction
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Journal of Intelligent Material Systems and Structures
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vibration
machinery
semiconductor
wafers
photolithography
micrometre
vibration control
dampers
shock absorbers
base isolation
massive
voice coils
hydraulics
pneumatics
piezo-electric
accelerometers
degrees of freedom
electronic

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