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    • 10. 发明申请
    • Stepping motor control circuit and analog electronic watch
    • 步进电机控制电路和模拟电子手表
    • US20100254226A1
    • 2010-10-07
    • US12798293
    • 2010-04-01
    • Kenji OgasawaraSaburo ManakaAkira TakakuraKeishi HonmuraTakanori HasegawaKosuke YamamotoKazumi SakamotoKazuo Kato
    • Kenji OgasawaraSaburo ManakaAkira TakakuraKeishi HonmuraTakanori HasegawaKosuke YamamotoKazumi SakamotoKazuo Kato
    • G04B19/04H02P8/38
    • G04C3/143H02P8/02H02P8/38
    • A stepping motor control circuit includes a rotation detecting means for detecting an induced signal generated by rotation of a rotor of a stepping motor, and detecting a rotation state of the stepping motor according to whether the induced signal exceeds a predetermined reference threshold voltage in a predetermined detection section, and a control means for controlling driving of the stepping motor by using any one of a plurality of main driving pulses having energy different from each other or a correction driving pulse having energy higher than energy of each main driving pulse according to a detection result of the rotation detecting means. The detection section is divided into a first section immediately after driving with the main driving pulse, a second section after the first section, a third section after the second section, and a fourth section after the third section, and the control means lengthens the third section subsequent to the second section when the rotation detecting means has detected an induced signal exceeding the reference threshold voltage in the second section, and controls the driving of the stepping motor by selecting a driving pulse based on a pattern of an induced signal in the first to fourth sections.
    • 步进电动机控制电路包括旋转检测装置,用于检测由步进电动机的转子旋转产生的感应信号,并根据感应信号是否超过预定的参考阈值电压来检测步进电动机的旋转状态 检测部分和控制装置,用于通过使用具有彼此能量不同的能量的多个主驱动脉冲中的任何一个来控制步进电机的驱动,或者根据检测来控制具有高于每个主驱动脉冲的能量的能量的校正驱动脉冲 旋转检测装置的结果。 检测部分被分为紧接在主驱动脉冲驱动之后的第一部分,第一部分之后的第二部分,第二部分之后的第三部分,以及第三部分之后的第四部分,并且控制装置延长第三部分 当旋转检测装置已经检测到超过第二部分中的参考阈值电压的感应信号时,在第二部分之后的部分,并且通过基于第一部分中的感应信号的模式选择驱动脉冲来控制步进电动机的驱动 到第四部分。