公开(公告)号：EP3089352A1

公开(公告)日：2016-11-02

申请号：EP14873448.6

申请日：2014-10-23

申请人： Mitsubishi Electric Corporation

发明人： FURUKI, Ichiro ,  YAMAMOTO, Yoshifumi ,  EGAWA, Tatsuya ,  ODA, Kosuke

IPC分类号： H02P8/18 ,  B41J11/00

CPC分类号： B41J2/35 ,  B41J3/4075 ,  H02P8/18 ,  H02P8/32

摘要： Speed fluctuations are decreased with a simple method even when a stepping motor (100) having comparatively large torque fluctuations is used. A drive pulse modulating unit (112) which modulates the frequency of a drive pulse to be inputted to the stepping motor (100) is provided. The drive pulse modulating unit (112) modulates the constant frequency of the drive pulse such that the frequency of the drive pulse within excitation-phase one cycle of the stepping motor (100) is: low for a period that is, by 1/8 cycle of the excitation-phase one cycle, before an excitation phase where the vibration of the stepping motor is the maximum; and high in an excitation phase that is by 1/2 cycle subsequent to the excitation phase where the drive pulse frequency is low.

摘要翻译： 即使使用具有较大转矩波动的步进电动机（100），也能够通过简单的方法降低速度波动。 提供了调制要输入到步进电动机（100）的驱动脉冲的频率的驱动脉冲调制单元（112）。 驱动脉冲调制单元（112）对驱动脉冲的恒定频率进行调制，使得步进电动机（100）的励磁相位一个周期内的驱动脉冲的频率为：低于1/8 在步进电机的振动最大的励磁阶段之前的励磁相位一周期的循环; 并且在驱动脉冲频率低的激励阶段之后的激励相位为高的1/2周期。