Patent ID: 6064140
Filing Date: 2000-05-16
Classification: G11B,H01L,H02N

Abstract:
A method for moving a body using a micromotor comprising a rectangular piezoelectric plate having long and short edges and first and second faces and having at least three groups of electrodes each having at least one electrode attached to at least one of the first and second faces, at least one point on a first one of said edges or an extension of the first edge, the method comprising:energizing one or more electrodes with a first electrical excitation, including applying a voltage to at least one electrode of the first group with respect to the third group of electrodes, said first group of electrodes being so positioned and energized to cause a force that is only in a direction perpendicular to said first edge of the plate at the point; andenergizing, with a second electrical excitation, a plurality of electrodes of said second group including applying a second voltage thereto with respect to said third group of electrodes, said second group of electrodes being so positioned and energized as to cause movement of said point with motion having a component parallel to the edge and a component perpendicular to the edge.