Electricity: motive power systems – Limitation of motor load – current – torque or force
Patent
1998-10-26
2000-06-27
Ro, Bentsu
Electricity: motive power systems
Limitation of motor load, current, torque or force
318721, H02P 614
Patent
active
060810874
ABSTRACT:
A motor controller according to the present invention is so configured that time interval measuring means measures the time interval of a rotational position signal indicating the rotational position of a rotor based on said rotational position signal, correction coefficient storage means stores the correction coefficient indicating the inaccuracy of said rotational position signal, estimated rotational angle production means produces an estimated rotational angle providing an estimated value of the rotational angle by extrapolating the rotational angle based on said time interval and said correction coefficient, and command production means produces a current command or a voltage command based on said estimated rotational angle and outputs it to driving means for driving a motor.
REFERENCES:
patent: 5384527 (1995-01-01), Rozman et al.
patent: 5569994 (1996-10-01), Taylor et al.
patent: 5729102 (1998-03-01), Gotou et al.
Igarashi Yoshiaki
Iijima Tomokuni
Kishibe Taro
Maruyama Yukinori
Narazaki Kazushige
Matsushita Electric - Industrial Co., Ltd.
Ro Bentsu
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