Title :
Three-phase electrostatic rotary stepper motor for skew angle compensation
Author :
Sarajlic, E. ; Yamahata, C. ; Cordero, M. ; Fujita, H.
Author_Institution :
Inst. of Ind. Sci., Univ. of Tokyo, Tokyo, Japan
Abstract :
We present a three-phase electrostatic rotary stepper micromotor for skew angle compensation of read/write heads in hard disk drives. The motor utilizes the electrical energy stored in the variable capacitances formed between the poles of a rotor and a stator. The rotor is suspended by a flexural suspension to avoid frictional contact during operation. The experimental characterization of a prototype having a diameter of 1.4 mm has demonstrated a rotational range of 26 degrees (±13 degrees) at 75 V and a maximum speed of 1.67 degree/ms.
Keywords :
electrostatic motors; rotors; stators; stepping motors; electrical energy; flexural suspension; frictional contact; hard disk drives; micromotor; rotor; skew angle compensation; stator; three-phase electrostatic rotary stepper motor; Microactuators; Electrostatic rotary stepper micromotor; flexural pivot; skew angle; variable capacitance micromotor;
Conference_Titel :
APMRC, 2010 Digest
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-8103-3
