专利名称：MOTOR SPEED CONTROL SYSTEM发明人：NORIYUKI YOSHIDA,YOSHIMI ASAI申请号：AU8543382申请日：19820629公开号：AU544806B2公开日：19850613
摘要：A motor speed control system comprising a digital control circuit for workingout and storing digital control signals in response to digital speed detection signalsrepresenting detected actual motor speeds and to digital speed command signalsrepresenting commanded nominal motor speeds, and further comprising an analogcontrol circuit for controlling power supply to the motor in accordance with analogcontrol signals corresponding to the digital control signals and with analog speeddetection signals representing the detected actual motor speed. The digital controlcircuit receives the digital speed detection and command signals and produces, in apredetermined cycle, the digital control signal which is prepared based on a differencebetween the detected actual speed and the commanded speed of the motor, withoutbeing affected by ambient conditions of the system and drifts of control elements of thecircuit during service. The analog control circuit regulates the power supply to the motorin quick response to the difference or deviation of the actual motor speed from thedesired nominal speed during the predetermined cycle. The digital and analog controlcircuits cooperate to control the running speed of the motor with high levels of accuracyand response capability.
申请人：BROTHER KOGYO K.K.
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