Piezoelectric drive circuit

Patent · Tue Aug 31 00:00:00 EDT 1999

OSTI ID:872491

Treu, Jr., Charles A. ^[1]

---

1. (Raymore, MO)

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

Related Subjects

piezoelectric
drive
circuit
motor
provided
utilizes
elements
oscillators
meacham
half-bridge
approach
feedback
ground
produce
signal
amplifiers
power
automatically
compensates
shifts
harmonic
frequency
due
pressure
temperature
changes
piezoelectric element
temperature change
temperature changes
motor drive
electric motor
drive circuit
electric element
piezoelectric elements
harmonic frequency
piezoelectric motor
elements due
piezoelectric drive
electric drive
electric elements
/310/