Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent
1998-12-03
2000-05-09
Sircus, Brian
Electricity: motor control systems
Closed loop speed control system for dc motor with commutator
Armature control by digital or combined analog and digital...
31856815, H02P 5168
Patent
active
060614986
ABSTRACT:
To provide an electric motor control system capable of reducing torque pulsation resulting from an intermittent control and assuring a smooth acceleration/deceleration. In a speed reference signal converter 9, a deviation between a last time value .omega..sub.r-1 and a this time value .omega..sub.r of the speed reference signal .omega..sub.r of a master control system 1 is computed, the speed reference signal .omega..sub.r from the master control system is converted into a speed reference signal .omega..sub.r * conforming to the computing cycle of the motor control system according to a ratio between the updating cycle of the speed reference signal from the master control system and a computing cycle in a motor control system and said deviation, a motor driving signal is produced according to this converted speed reference signal .omega..sub.r * and a motor 6 is driven.
REFERENCES:
patent: 4837486 (1989-06-01), Geens et al.
patent: 4907109 (1990-03-01), Senio
patent: 4914365 (1990-04-01), Murakami et al.
patent: 5301174 (1994-04-01), Matoba et al.
Hosoda Hiromi
Kato Yoshihito
Duda Rina I.
Kabushiki Kaisha Toshiba
Sircus Brian
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