TITLE:
A New Motor of Stick Type with Coupled Mechanical Vibration of Bimorph Beam and Frictional Force
AUTHORS:
Hiroyuki Yaguchi
KEYWORDS:
Frictional Force, Flexible Material, Bimorph Beam, Resonance-Drive, Vibration Mode
JOURNAL NAME:
Engineering,
Vol.7 No.7,
July
21,
2015
ABSTRACT: This paper proposes a new non-magnetic motor with a rotor rotated by using the resonance energy of a bimorph cantilever beam excited by electrostatic force. The use of flexible material enables conversion of translational vibration to rotary movement in one direction. Basic characteristics of a prototype motor with two bimorph cantilever beams, such as rotational speed, output torque, and efficiency were determined experimentally. Results show that a maximum rotational speed of 2800 rpm was obtained without a load torque. It is also observed that this motor produces the output torque of 98 μNm when the rotational speed was 980 rpm. The maximum efficiency was 24% when the input power was 0.065 W.