Impedance controller

Details Impedance controller Impedance controller

1997-03-25

1998-11-03

Ro, Bentsu

Electricity: motive power systems

Impact, mechanical shock, or vibration-producing motors

318611, 318676, H02K 3300, G05D 1902

Patent

active

058314016

ABSTRACT:
The system disclosed herein controls the vibratory energy radiated from a structure subject to excitation from an outside disturbance by enforcing a preselected mechanical impedance upon at least one point in the structure using an electromechanical transducer connected to the structure at that point. The transducer is energized in response to the output of an adjustable or adaptable filter. Sensors provide signals representing the force applied by the transducer and the resultant velocity. The force and velocity signals are applied as inputs to the adaptable filter through circuit means including a component providing an electrical analog of the preselected mechanical impedance. The adaptable filter is then controlled to reduce the amplitude of the input signal applied to the filter, i.e. the error between the measured mechanical impedance and the desired impedance.

REFERENCES:
patent: 4715559 (1987-12-01), Fuller
patent: 5367612 (1994-11-01), Bozich et al.
patent: 5526292 (1996-06-01), Hodgson et al.

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