Patent ID: 7511403

Claim:
A motor driver system comprising: a piezoelectric linear motor having a substantial capacitive load and capable of moving in either of first and second, opposite directions; a first pair of loosely coupled inductors having their output connected to the piezoelectric motor for driving said motor in one direction; a second pair of loosely coupled inductors having their output connected to the piezoelectric motor for driving said motor in the opposite direction; a storage capacitor connected between the pairs of loosely coupled inductors storing energy from the loosely coupled inductors; an output capacitor connected across the piezoelectric motor to apply energy from the loosely coupled inductors to the piezoelectric motor; a first pair of switches connected between the first pair of loosely coupled inductors and the piezoelectric motor and operable for driving the piezoelectric motor in said first direction; a second pair of switches connected between the second pair of loosely coupled inductors and the piezoelectric motor and operable for driving the piezoelectric motor in said second and opposite direction.