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1.发明授权公开(公告)号：US09190941B2
公开(公告)日：2015-11-17
申请号：US14013146
申请日：2013-08-29
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Saburo Manaka , Kenji Ogasawara , Kazumi Sakumoto , Keishi Honmura , Kosuke Yamamoto , Satoshi Sakai
Abstract: A rotation detection circuit detects an induced current flowing through a drive coil of a stepping motor in a detection section divided into a plurality of sections, and detects a rotation state of the stepping motor on the basis of a pattern indicating whether or not the induced current exceeds a predetermined reference value in each of the sections. A control unit selects a drive pulse corresponding to the rotation state detected by the rotation detection unit, and supplies a drive current to a drive coil to rotatably drive the stepping motor. The rotation detection unit carries out detection by selecting a detection direction of the induced current in the sections after the first section on the basis of whether or not the induced current exceeding each of a plurality of reference values is detected plural times in the first section.
Abstract translation: 旋转检测电路检测在划分为多个部分的检测部中流过步进电动机的驱动线圈的感应电流，并且基于表示感应电流的图案来检测步进电动机的旋转状态 在每个部分中超过预定的参考值。 控制单元选择与由旋转检测单元检测到的旋转状态对应的驱动脉冲，并向驱动线圈提供驱动电流以可旋转地驱动步进电机。 旋转检测单元基于在第一部分中是否检测到多个参考值中的每一个以上的感应电流被多次检测，在第一部分之后的部分中选择感应电流的检测方向来进行检测。
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2.发明授权公开(公告)号：US09182746B2
公开(公告)日：2015-11-10
申请号：US14013120
申请日：2013-08-29
Applicant: SEIKO INSTRUMENTS INC.
Inventor： Kosuke Yamamoto , Saburo Manaka , Kazumi Sakumoto , Kenji Ogasawara , Keishi Honmura , Satoshi Sakai
Abstract: A stepping motor control circuit includes: a rotation detection unit that detects a induced signal exceeding a predetermined reference threshold voltage which is generated by a stepping motor in a detection section divided into at least three sections, and detects a rotation state on the basis of a pattern indicating whether the induced signal exceeding a reference threshold voltage is detected in each of the sections; and a control unit that selects a main drive pulse depending on the rotation state detected by the rotation detection unit from a plurality of main drive pulses which are different from each other in energy, and drives the stepping motor. When the induced signal exceeding a reference threshold voltage is not detected in an initial section, the rotation detection unit detects the induced signal by shifting an end position of at least one section other than the initial section to a rear side by a predetermined amount.
Abstract translation: 步进电机控制电路包括：旋转检测单元，其检测超过由划分为至少三个部分的检测部中由步进电机产生的预定参考阈值电压的感应信号，并基于 指示在每个部分中是否检测到超过参考阈值电压的感应信号的模式; 以及控制单元，其根据由旋转检测单元检测的旋转状态，从能量彼此不同的多个主驱动脉冲中选择主驱动脉冲，并驱动步进电机。 当在初始部分中没有检测到超过参考阈值电压的感应信号时，旋转检测单元通过将除了初始部分之外的至少一个部分的结束位置向后侧移动预定量来检测感应信号。
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3.发明授权公开(公告)号：US09086685B2
公开(公告)日：2015-07-21
申请号：US13737032
申请日：2013-01-09
Applicant: Seiko Instruments Inc.
Inventor： Kosuke Yamamoto , Akira Takakura , Kenji Ogasawara , Saburo Manaka , Kazumi Sakumoto , Keishi Honmura
Abstract: A control circuit selects a drive pulse group corresponding to the detected voltage of a power cell from among plural drive pulse groups each including plural types of main drive pulses, and selects a drive pulse according to the detected condition of rotation of a stepping motor from among main drive pulses included in the selected drive pulse group or a correction drive pulse having larger energy than the main drive pulses. When the control circuit selects a main drive pulse initially by selecting the drive pulse group, the control circuit selects the main drive pulse having the largest energy in the selected drive pulse group. A drive pulse group selection circuit drives the stepping motor by the main drive pulse in the drive pulse group selected by the control circuit or the correction drive pulse via a main drive pulse output circuit and a correction drive pulse output circuit.
Abstract translation: 控制电路从包括多种主驱动脉冲的多个驱动脉冲组中选择对应于功率单元的检测电压的驱动脉冲组，并根据检测到的步进电机的旋转条件从 包括在所选择的驱动脉冲组中的主驱动脉冲或具有比主驱动脉冲更大的能量的校正驱动脉冲。 当控制电路首先通过选择驱动脉冲组选择主驱动脉冲时，控制电路选择所选择的驱动脉冲组中具有最大能量的主驱动脉冲。 驱动脉冲组选择电路通过主驱动脉冲输出电路和校正驱动脉冲输出电路，通过由控制电路选择的驱动脉冲群中的主驱动脉冲或校正驱动脉冲来驱动步进电机。
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4.发明授权公开(公告)号：US08721170B2
公开(公告)日：2014-05-13
申请号：US13713060
申请日：2012-12-13
Applicant: Seiko Instruments Inc.
Inventor： Saburo Manaka , Kenji Ogasawara , Kazumi Sakumoto , Keishi Honmura , Kosuke Yamamoto
IPC: G04B18/00
Abstract: A rotation detection unit configured to detect the condition of rotation of a stepping motor on the basis of an induced signal generated in a drive coil of the stepping motor in a detection period in which the condition of rotation of the stepping motor is detected and a control unit configured to rotationally drive the stepping motor by supplying a drive signal to the drive coil of the stepping motor within the driving period in which the stepping motor is rotationally driven are provided. The driving period and part of the detection period are configured to overlap with each other in a first time interval, and the control unit stops supply of the drive signal to the drive coil of the stepping motor in the first time interval.
Abstract translation: 一种旋转检测单元，被配置为在检测步进电动机的旋转条件的检测时段中，基于在步进电动机的驱动线圈中产生的感应信号来检测步进电动机的旋转状态， 通过在步进电动机旋转驱动的驱动期间内设置驱动步进电动机的驱动信号的单元，该驱动信号被提供给步进电动机的驱动线圈。 驱动期间和检测期间的一部分被配置为在第一时间间隔内彼此重叠，并且控制单元在第一时间间隔内停止向步进电机的驱动线圈供应驱动信号。
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