8 May 1995 Vibration control using intelligent Helmholtz resonators
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Abstract
Computer simulations and experiments have show that active and semi-active (adaptive- passive) vibration compensators could be devised modifying the currently available fluidic vibration absorbers. These devices, despite their small size and weight, are currently used to isolate the low frequency high amplitude vibration of relatively massive devices such as engines. They consist of two chambers filled with an inexpensive fluid mixture such as water and anti-freeze which communicate through one or more orifices and an inertia track. The communication through the track is based on the concept of Helmholtz resonance. The lower chamber is separated from the upper chamber by a diaphragm called decoupler. Both semi- active (adaptive-passive) and active control mechanisms, for real-time adjustment of the Helmholtz resonance are discussed in this paper. Real-time manipulation of the inertia track inertance and the position of the decoupler result in semi-active and active control vibration, respectively. We call these novel controllable vibration compensators Intelligent Helmholtz Resonators, IHRs.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Reza Kashani, Reza Kashani, Eric Little, Eric Little, } "Vibration control using intelligent Helmholtz resonators", Proc. SPIE 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, (8 May 1995); doi: 10.1117/12.208322; https://doi.org/10.1117/12.208322
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