Passive-active mount

Spring devices – Fluid – Expansible-contractible chamber device

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188379, 267 6428, 26714014, F16F 904

Patent

active

058878580

ABSTRACT:
The inventively advanced mount accommodates a conventional mount (such as an air mount) so as to include, at the mount's foundation-securing plate, at least one motion sensor and at least one vibratory actuator. Each sensor is correlated with an actuator. For each sensor-actuator pair, the electrical feedback loop includes generation by the sensor of a signal resulting from the local vibration of the foundation-securing plate, generation by a processor/controller of a signal derived from the sensor's signal, and exertion upon the foundation-securing plate by the sensor's paired actuator of a vibratory force commanded by the processor/controller's signal. Many preferred inventive embodiments collocate each sensor with its paired actuator and implement a conventional vibration suppression algorithm involving collocated velocity feedback. The inventive "passive-active" mount uniquely brings to bear, sequentially and complementarily, passive vibration control followed by active vibration control.

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Jen-Houne Hannsen Su, "Robust Passive-Active Mounts for Machinery and Equent," Proceedings of DETC '97, 1997 ASME Design Engineering Technical Conferences, Sep. 14-17, 1997, Sacramento, CA (nine pages).
Su, J. Hannsen et al, "Mechanisms of Localized Vibration Control in Complex Structures," Journal of Vibration and Acoustics, Jan. 96, V. 118, pp. 135-139.

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