Patent ID: 6127767
Filing Date: 2000-10-03
Classification: G01C,H02N

Abstract:
An electrostatic driving apparatus for a comb type microactuator, comprising:a suspended vibration plate having a combed portion at both sides thereof;a first activating vibration plate and a second activating vibration plate each having a combed portion engaged with one and the same side of the combed portion of the suspended vibration plate;a sensing plate having a combed portion engaged with the other side of the combed portion of the suspended vibration plate;a sensing unit for sensing the displacement of the suspended vibration plate by a capacitance between the suspended vibration plate and the sensing plate; anda power unit for applying an electrostatic force to the activating vibration plate to excite the suspended vibration plate,wherein the power unit comprises an inverter and a power source which is directly connected to the first activating vibration plate and connected to the second activating vibration plate via the inverter.