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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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Journal ArticleDOI
TL;DR: In this paper, active vibration control during deployment of the NASA Solar Array Flight Experiment (SAFE) structure is considered and two different control strategies are investigated, one based on the linear regulator theory with a prescribed degree of stability and the other based on a force actuator.

23 citations

Proceedings ArticleDOI
08 May 1995
TL;DR: In this paper, the authors present the theory of operation and test results for one of these technologies called ''Self-Sensing Active Vibration Elimination'' using self-sensing piezo-ceramics.
Abstract: Over the past several years Eastman Kodak Company has been developing technologies in the area of active vibration control for space structures. The basic goal is to keep the structure as still as possible during operation using active and/or passive damping and isolation. Inherent in these space structures are many of the qualities that make a system difficult to actively control. They are lightly damped, modally dense, and are sensitive to weight increases, as well as thermal loads that a powered actuator might apply to the structure. Further, any system must be fully space qualifiable. To overcome these hurdles, Kodak has investigated several schemes to apply in a multitier approach to achieve maximum benefit from an active system. This paper will present the theory of operation and test results for one of these technologies called `Self-Sensing Active Vibration Elimination'. We will elaborate on a collocated active damping technique using self-sensing piezo-ceramics. The term `self-sensing' is used to describe the phenomenon of simultaneous actuation and sensing using the same device, in this case piezo- ceramic wafers. This work is an extension of Dosch et al. (1992). The key differences lie in the geometry in which the self-sensor must operate. We parallel the theoretical development given in Dosch et al., but present the development in more of a tutorial form. Research in this area is plentiful, however, less than desirable results have often been reported on systems more complex than a cantilever beam. A strain-rate self-sensor with > 60 dB dynamic range and nano-strain sensitivity in the 10 to 200 Hz frequency band is detailed below, proving that self-sensing can be made to work on large structures. Closed loop results are presented that show performance improvements of over 30 dB reductions in the structural resonance response. It should be mentioned that the system described below could easily be applied to extremely small systems (such as a disk drive read/write arm). The self-sensor would allow an entire controller to be placed on a single 14-pin DIP chip, and since the actuator is also the sensor, less instrumentation loading will occur.© (1995) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

23 citations

Journal ArticleDOI
TL;DR: In this article, a fractional order PD μ control of lattice grid beam with piezoelectric fiber composite face sheets is proposed, which can reduce the vibration amplitude more significantly and more rapidly.

23 citations

Journal ArticleDOI
TL;DR: In this article, a vibration energy harvester employing the magnet/piezoelectric composite transducer to convert mechanical vibration energy into electrical energy is presented, which can obtain an average power of 0.39 mW for an acceleration of 0.6g at frequency of 38 Hz.
Abstract: In this research, a vibration energy harvester employing the magnet/piezoelectric composite transducer to convert mechanical vibration energy into electrical energy is presented. The electric output performance of a vibration energy harvester has been investigated. Compared to traditional magnetoelectric transducer, the proposed vibration energy harvester has some remarkable characteristic which do not need binder. The experimental results show that the presented vibration energy harvester can obtain an average power of 0.39 mW for an acceleration of 0.6g at frequency of 38 Hz. Remarkably, this power is a very encouraging power figure that gives the prospect of being able to power a widely range of wireless sensors in wireless sensor network.

23 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202363
2022106
2021131
2020118
2019157
2018185