-
公开(公告)号：US08269440B2
公开(公告)日：2012-09-18
申请号：US12480161
申请日：2009-06-08
IPC分类号： H02P23/12
摘要： A motor control system includes a power control module and a detection module. The power control module controls power applied to first and second stator coils of a motor to rotate a rotor. The rotor induces voltages in the first and second stator coils when the rotor is rotating. The detection module determines a first time when a first voltage is induced in the first stator coil and determines a second time when a second voltage is induced in the second stator coil after the first voltage is induced. The detection module determines a speed of the rotor based on a difference between the first and second time. The power control module applies current through the second stator coil a predetermined period after the second time. The power control module determines the predetermined period based on the speed of the rotor.
摘要翻译： 电机控制系统包括电源控制模块和检测模块。 功率控制模块控制施加到电动机的第一和第二定子线圈的电力以使转子旋转。 当转子旋转时，转子在第一和第二定子线圈中感应电压。 检测模块确定在第一定子线圈中感应出第一电压的第一次，并且在第一电压被感应之后确定在第二定子线圈中感应到第二电压的第二时间。 检测模块基于第一次和第二次之间的差异来确定转子的速度。 功率控制模块在第二时间之后的预定时间段内通过第二定子线圈施加电流。 功率控制模块基于转子的速度来确定预定周期。
-
公开(公告)号：US20100134055A1
公开(公告)日：2010-06-03
申请号：US12480161
申请日：2009-06-08
摘要： A motor control system includes a power control module and a detection module. The power control module controls power applied to first and second stator coils of a motor to rotate a rotor. The rotor induces voltages in the first and second stator coils when the rotor is rotating. The detection module determines a first time when a first voltage is induced in the first stator coil and determines a second time when a second voltage is induced in the second stator coil after the first voltage is induced. The detection module determines a speed of the rotor based on a difference between the first and second time. The power control module applies current through the second stator coil a predetermined period after the second time. The power control module determines the predetermined period based on the speed of the rotor.
摘要翻译： 电机控制系统包括电源控制模块和检测模块。 功率控制模块控制施加到电动机的第一和第二定子线圈的电力以使转子旋转。 当转子旋转时，转子在第一和第二定子线圈中感应电压。 检测模块确定在第一定子线圈中感应出第一电压的第一次，并且在第一电压被感应之后确定在第二定子线圈中感应到第二电压的第二时间。 检测模块基于第一次和第二次之间的差异来确定转子的速度。 功率控制模块在第二时间之后的预定时间段内通过第二定子线圈施加电流。 功率控制模块基于转子的速度来确定预定周期。
-
公开(公告)号：US07924526B1
公开(公告)日：2011-04-12
申请号：US12620902
申请日：2009-11-18
申请人： Siew Yong Chui , Edy Susanto , Jye Sheng Hong
发明人： Siew Yong Chui , Edy Susanto , Jye Sheng Hong
IPC分类号： G11B21/02
CPC分类号： G11B21/12 , G11B19/2063
摘要： A method and apparatus for controlling the parking of a transducer head in a disk drive. A drive current is provided to a motor which controls movement of the head in a direction to move the head to a parking position. The arrival of the head at the parking position is detected. Upon this detection, a drive stop sequence is initiated to stop providing the drive current a short time after the head reaches the parking position. In one embodiment, it is determined whether the head has reached the parking position by monitoring the back emf (bemf) of the motor controlling the head, typically a voice coil motor (VCM). The detection of a sharp decline in the bemf indicates the head has stopped.
摘要翻译： 一种用于控制在磁盘驱动器中驻波的方法和装置。 驱动电流被提供给电动机，该电动机控制磁头沿使磁头移动到停车位置的方向上的运动。 检测到头部到达停车位置。 在该检测时，启动驱动停止序列，以在头部到达停车位置之后的短时间内停止提供驱动电流。 在一个实施例中，通过监视通常是音圈电机（VCM）的头部的电动机的反电动势（bemf）来确定磁头是否已经到达停车位置。 检测到bemf急剧下降表明头部已停止。
-
公开(公告)号：US07636220B1
公开(公告)日：2009-12-22
申请号：US11595697
申请日：2006-11-10
申请人： Siew Yong Chui , Edy Susanto , Jye Sheng Hong
发明人： Siew Yong Chui , Edy Susanto , Jye Sheng Hong
IPC分类号： G11B21/02
CPC分类号： G11B21/12 , G11B19/2063
摘要： A method and apparatus for controlling the parking of a transducer head in a disk drive. A drive current is provided to a motor which controls movement of the head in a direction to move the head to a parking position. The arrival of the head at the parking position is detected. Upon this detection, a drive stop sequence is initiated to stop providing the drive current a short time after the head reaches the parking position. In one embodiment, it is determined whether the head has reached the parking position by monitoring the back emf (bemf) of the motor controlling the head, typically a voice coil motor (VCM). The detection of a sharp decline in the bemf indicates the head has stopped.
摘要翻译： 一种用于控制在磁盘驱动器中驻波的方法和装置。 驱动电流被提供给电动机，该电动机控制磁头沿使磁头移动到停车位置的方向上的运动。 检测到头部到达停车位置。 在该检测时，启动驱动停止序列，以在头部到达停车位置之后的短时间内停止提供驱动电流。 在一个实施例中，通过监视通常是音圈电机（VCM）的头部的电动机的反电动势（bemf）来确定磁头是否已经到达停车位置。 检测到bemf急剧下降表明头部已停止。
-
-
-
搜索结果
24 条记录 (耗时 0.02 秒)
