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    • 98. 发明申请
    • DEVICE FOR DRIVING BRUSHLESS MOTOR
    • 用于驱动无刷电机的装置
    • WO1989005061A1
    • 1989-06-01
    • PCT/JP1988001169
    • 1988-11-18
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.KIMURA, YoshitsuguYASOHARA, MasahiroNAKANO, Hiromitsu
    • MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    • H02P06/02
    • H02P6/06H02P6/182Y02P80/116
    • A device for driving a brushless motor comprising drive coils (1) to (3), drive transistors (10) to (15), a voltage controlled oscillator (40), a current switching circuit (44), a phase error detector (20) having a comparator (27), and an error amplifier (30). The output of the error amplifier (30) is input to the voltage controlled oscillator (40), whereby no filter is required that was so far used, and the number of capacitors of large capacities can be greatly reduced. It is further made possible to prevent spike noises included in the current waveforms supplied to the drive coils, voltage drop due to the current that flows and the impedance of drive coils, variance in the power source voltage and the load, and the drop of efficiency due to the armature reaction.
    • 一种用于驱动无刷电动机的装置,包括驱动线圈(1)至(3),驱动晶体管(10)至(15),压控振荡器(40),电流开关电路(44),相位误差检测器 )具有比较器(27)和误差放大器(30)。 误差放大器(30)的输出被输入到压控振荡器(40),由此不需要使用过滤器,并且可以大大减少大容量的电容器的数量。 进一步可以防止提供给驱动线圈的电流波形中包括的尖峰噪声,由于流过的电流引起的电压降和驱动线圈的阻抗,电源电压和负载的变化以及效率的下降 由于电枢反应。