METHOD AND APPARATUS FOR NON-MODEL BASED DECENTRALIZED ADAPTIVE FEEDFORWARD ACTIVE VIBRATION CONTROL

A method and system/apparatus implementing a non-model based Decentralized Feedforward Adaptive Algorithm (DFAA) for active vibration control of an actively-driven element, such as an Active Vibration Absorber (AVA) (24). The AVA (24) preferably includes an inertial tuning mass (42) and a voice coil...

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Bibliographische Detailangaben
Hauptverfasser:	NORRIS, MARK A, JOLLY, MARK R, ROSSETTI, DINO J
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS SHOCK-ABSORBERS SOUND-PRODUCING DEVICES SPRINGS THERMAL INSULATION IN GENERAL WEAPONS
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Zusammenfassung:	A method and system/apparatus implementing a non-model based Decentralized Feedforward Adaptive Algorithm (DFAA) for active vibration control of an actively-driven element, such as an Active Vibration Absorber (AVA) (24). The AVA (24) preferably includes an inertial tuning mass (42) and a voice coil assembly (46) and is contained in an active vibration control system (20) wherein the method and system/apparatus reduce vibration of a vibrating member (22) at an attachment point (26) by receiving an error signal from an error sensor (28) such as an accelerometer and a reference signal from a tachometer (32) or accelerometer (34), where the reference signal is correlated to, or indicative of the frequency content of, a primary vibration source (36) and calculating an updated output signal via an electronic controller (39) using the non-model based DFAA to dynamically drive the actively-driven element, such as AVA (24). The method and system/apparatus using DFAA is effective for reduction of both tonal and broadband vibration. The method approaches the performance of Filtered-x LMS control, yet is decentralized and does not require information regarding the plant.