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Piezoelectric drive circuit

Patent ·
OSTI ID:872491

A piezoelectric motor drive circuit is provided which utilizes the piezoelectric elements as oscillators and a Meacham half-bridge approach to develop feedback from the motor ground circuit to produce a signal to drive amplifiers to power the motor. The circuit automatically compensates for shifts in harmonic frequency of the piezoelectric elements due to pressure and temperature changes.

Research Organization:
Kansas City Plant (KCP), Kansas City, MO (United States)
DOE Contract Number:
AC04-76DP00613
Assignee:
AlliedSignal Inc. (Morris Township, NJ)
Patent Number(s):
US 5945768
Application Number:
08/853,500
OSTI ID:
872491
Country of Publication:
United States
Language:
English

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