Inventor
HAYASHIDA HIROSHI
JP14 patents
Patents
14 patentsUS4599561AJul 8, 1986
Device for detecting the relative and absolute position of a moving body
HITACHI LTD73 citations96
US4558265ADec 10, 1985
Method and apparatus for position control of an electric motor
HITACHI LTD93 citations96
US4473786ASep 25, 1984
Method for controlling angular position and apparatus therefor
HITACHI LTD59 citations96
US4983875AJan 8, 1991
Actuator
HITACHI LTD28 citations92
US4418372ANov 29, 1983
Magnetic rotary encoder
HITACHI LTD36 citations92
US4628259ADec 9, 1986
Magneto resistive sensor for detecting movement of a rotating body
HITACHI LTD27 citations91
US4580084AApr 1, 1986
Method and system for controlling speed of electric motor
HITACHI LTD25 citations81
US4983893AJan 8, 1991
Actuator with stepping motion function
HITACHI LTD8 citations74
US4638225AJan 20, 1987
Method and apparatus therefor in motor speed control
HITACHI LTD19 citations74
US4403187ASep 6, 1983
Magnetic head for sensing the position of a moving member
HITACHI LTD15 citations74
US4099108AJul 4, 1978
Variable speed control apparatus for induction motor
HITACHI LTD17 citations74
US4890024ADec 26, 1989
Low-speed high-torque motor
HITACHI LTD18 citations73
US3949283AApr 6, 1976
Control system for brushless motor
HITACHI LTD17 citations73
US4586152AApr 29, 1986
Method and apparatus for counting an infinite length with a counter of finite length
HITACHI LTD2 citations62