High resolution piezoelectric motor
AssigneeNanomotion Ltd.
InventorZe'ev Ganor
Life of this patent
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Abstract
A piezoelectric motor for moving and positioning a load, the motor comprising: a piezoelectric vibrator having a plurality of electrodes and a coupling surface which is pressed to a load; and a power supply selectively operable to electrify at least one vibrator electrode with time varying voltage to generate vibrations in the coupling surface that step the load to a desired position or to electrify at least one vibrator electrode with DC voltage to displace the coupling surface and move thereby the load to a desired position, which DC voltage the power supply maintains to maintain the load at the desired position.
Claims3
A piezoelectric actuator for moving and positioning a load, the actuator comprising:
- a piezoelectric body having a plurality of electrodes and a coupling surface which is pressed to a load to friction couple the body to the load;
- and
- a power supply operable to electrify at least one electrode of the plurality of electrodes with DC voltage to displace the coupling surface and drag thereby the load to a desired position, which DC voltage the power supply maintains to maintain the load at the desired position.
Dependencies are inferred from the claim text.