Vibration damping system using active negative capacitance shunt

Details Vibration damping system using active negative capacitance shunt Vibration damping system using active negative capacitance shunt

1994-12-02

1996-09-24

Bishop, Steven C.

Cutting by use of rotating axially moving tool

Tool-carrier with vibration-damping means

73 1104, 73579, 73769, 188380, 310316, 310326, 409141, B23B 4700, G01B 716

Patent

active

055584772

ABSTRACT:
Boring bar vibration damping is improved by a novel use of the electromechanical properties of the piezoelectric actuator material. A negative capacitance shunt circuit is provided in which a voltage-controlled voltage-source continuously simulates a negative capacitance that is substantially equal in magnitude but opposite in phase to the capacitance of the piezoelectric material. The negative capacitance is shunted across the piezoelectric device, effectively compensating for the capacitance of the device across a broad frequency band. The voltages generated in the piezoelectric element in response to mechanical deformation induced by broadband vibrations of the structure during damping operations, may then be completely resistively dissipated, thereby enhancing the mechanical damping.

REFERENCES:
patent: 4158787 (1979-06-01), Forward
patent: 5170103 (1992-12-01), Rouch et al.
patent: 5347870 (1994-09-01), Dosch et al.
patent: 5460182 (1995-10-01), Goodman et al.

Affiliated with

Also associated with

Rating

Vibration damping system using active negative capacitance shunt does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vibration damping system using active negative capacitance shunt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vibration damping system using active negative capacitance shunt will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1924637