초록 ▼

The invention is uniquely "passive-active" in that it brings to bear, sequentially and complementarily, passive vibration control followed by active vibration control. A conventional mount (such as an air mount) is accommodated so as to include, at the mount's foundation-securing plate, at least one

The invention is uniquely "passive-active" in that it brings to bear, sequentially and complementarily, passive vibration control followed by active vibration control. A conventional mount (such as an air mount) is accommodated 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 embodiments of the inventive apparatus, system and method collocate each sensor with its paired actuator and implement a conventional vibration suppression algorithm involving collocated velocity feedback.

대표청구항 ▼

[ What is claimed is:] [1.] A vibration isolation system, said vibration isolation system being for reducing transmission of vibration of a first entity to a second entity, said vibration isolation system comprising:a spring assembly for effectuating global passive vibration control; anda feedback l

[ What is claimed is:] [1.] A vibration isolation system, said vibration isolation system being for reducing transmission of vibration of a first entity to a second entity, said vibration isolation system comprising:a spring assembly for effectuating global passive vibration control; anda feedback loop system for effectuating localized active vibration control, subsequent to said effectuating of said global passive vibration control;said spring assembly including:a first securement member, for securing said spring assembly with respect to said first entity;a second securement member, for securing said spring assembly with respect to said second entity; andan interposed resilient member having the quality to passively reduce transmission of vibration in at least a first frequency bandwidth; andsaid feedback loop system including:a sensor, coupled with said second securement member, which generates a sensor signal which is a function of the vibration in a localized control area of said second securement member;a PID-type controller which generates a control signal which is a function of said sensor signal; andan actuator, coupled with said second securement member, which generates, in said localized control area, a vibratory force which is a function of said control signal, so as to actively reduce transmission of vibration in at least a second frequency bandwith, wherein said second frequency bandwidth differs from said first frequency bandwidth;said sensor and said actuator being collocated whereby said sensor and said actuator are approximately coincident and whereby the sensing of said sensor and the actuation of said actuator are approximately in the same direction.