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公开(公告)号：US5847521A
公开(公告)日：1998-12-08
申请号：US684343
申请日：1996-07-19
申请人： Masatoshi Morikawa , Kunio Seki , Yasuhiko Kokami
发明人： Masatoshi Morikawa , Kunio Seki , Yasuhiko Kokami
摘要： A motor drive method and apparatus for reducing noise of a motor. The motor drive apparatus includes first, second and third half bridge circuits. Each of the first, second and third half bridge circuits includes a first transistor which is adapted to form a current path between a first operational potential and an output terminal thereof and a second transistor which is adapted to form a current path between a second operational potential and the output terminal thereof. Each of the output terminals are connected to the corresponding drive coil of a motor. Each of the first and second transistors includes a control terminal to which a control signal is supplied. The motor drive apparatus detects a counter-induced voltage of the drive coil corresponding to the second half bridge circuit by supplying control signals to the first and second transistors thereof for making each current path therein a non-conducting state, and for forming current paths in the first transistor of the first half bridge circuit and in the second transistor of the third half bridge circuit respectively. Further the motor drive apparatus cuts off the current path of the first transistor in the first half bridge circuit, forms it and cuts it off again by supplying a control signal thereto after start of supplying a control signal for forming the current path of the first transistor in the second half bridge circuit. A control signal for forming the current path is supplied to the control terminal of the second transistor in the third half bridge circuit.
摘要翻译： 一种用于降低电动机噪声的电动机驱动方法和装置。 电机驱动装置包括第一，第二和第三半桥电路。 第一，第二和第三半桥电路中的每一个包括第一晶体管，其适于在第一操作电位和其输出端之间形成电流路径，以及第二晶体管，其适于在第二操作电位之间形成电流路径 及其输出端。 每个输出端子连接到电动机的相应的驱动线圈。 第一和第二晶体管中的每一个包括控制端子，控制端子被提供给控制端子。 马达驱动装置通过向其第一和第二晶体管提供控制信号来检测与第二半桥电路相对应的驱动线圈的反感应电压，以使其中的每个电流路径处于非导通状态，并且用于形成电流路径 第一半桥电路的第一晶体管和第三半桥电路的第二晶体管。 此外，马达驱动装置切断第一半桥电路中的第一晶体管的电流路径，并且在开始提供用于形成第一晶体管的电流路径的控制信号之后，通过向其提供控制信号来形成它并再次切断 在后半桥电路中。 用于形成电流路径的控制信号被提供给第三半桥电路中的第二晶体管的控制端。
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公开(公告)号：US06344721B2
公开(公告)日：2002-02-05
申请号：US09818511
申请日：2001-03-28
IPC分类号： H02P540
CPC分类号： H02P6/22
摘要： A pulse current having such a short duration as the rotor does not react is passed through field coils of respective phases of a brushless motor in first and second, mutually opposite, directions sequentially, voltages induced, by the pulse currents in two directions at each of the field coils of the non-conducting phase are combined, the polarity of a combined voltage is detected, and a field coil pair where a current is to be passed to start the motor is determined based on the result of detection for each of field coil of the non-conducting phase.
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公开(公告)号：US06340873B2
公开(公告)日：2002-01-22
申请号：US09893549
申请日：2001-06-29
IPC分类号： H02P540
CPC分类号： H02P6/22
摘要： A pulse current having such a short duration as the rotor does not react is passed through field coils of respective phases of a brushless motor in first and second, mutually opposite, directions sequentially, voltages induced, by the pulse currents in two directions at each of the field coils of the non-conducting phase are combined, the polarity of a combined voltage is detected, and a field coil pair where a current is to be passed to start the motor is determined based on the result of detection for each of field coil of the non-conducting phase.
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公开(公告)号：US06563286B2
公开(公告)日：2003-05-13
申请号：US10025545
申请日：2001-12-26
IPC分类号： H02P700
CPC分类号： H02P6/22
摘要： A pulse current having such a short duration as the rotor does not react is passed through field coils of respective phases of a brushless motor in first and second, mutually opposite, directions sequentially, voltages induced, by the pulse currents in two directions at each of the field coils of the non-conducting phase are combined, the polarity of a combined voltage is detected, and a field coil pair where a current is to be passed to start the motor is determined based on the result of detection for each of field coil of the non-conducting phase.
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公开(公告)号：US20080061726A1
公开(公告)日：2008-03-13
申请号：US11895406
申请日：2007-08-23
IPC分类号： H02P6/08
摘要： A control technology for a synchronous motor for suppressing rotational pulsation caused by variation in individuals without making a control algorithm complex is provided. In a motor drive system which is a control device for a synchronous motor, in order to suppress the pulsation component of N times as high as the AC frequency for driving the synchronous motor, a controller in which the phase property of the disturbance response of the controller with respect to the pulsation frequency is within ±45° is arranged. Therefore, the torque pulsation component generated from distortion in induction voltage or variation between phases is suppressed.
摘要翻译： 提供了一种用于抑制由个体变化引起的旋转脉动的同步电机的控制技术，而不使控制算法复杂化。 在作为同步电动机的控制装置的电动机驱动系统中，为了抑制用于驱动同步电动机的交流频率的N倍的脉动分量，控制器将其中的干扰响应的相位特性 相对于脉动频率的控制器设置在±45°以内。 因此，抑制了感应电压的变形或相位的变化而产生的转矩脉动成分。
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6.发明授权Motor drive semiconductor integrated circuit and magnetic disk storage apparatus 有权电机驱动半导体集成电路和磁盘存储装置公开(公告)号：US07280308B2
公开(公告)日：2007-10-09
申请号：US11098644
申请日：2005-04-05
申请人： Yasuhiko Kokami
发明人： Yasuhiko Kokami
IPC分类号： G11B5/596
CPC分类号： G11B33/121 , G05B11/28 , G11B5/5547 , G11B25/043
摘要： The Invention provides a motor drive semiconductor integrated circuit for driving and controlling a voice coil motor that can conduct a seek operation, a track follow operation and a settling operation through PWM control, has desired control accuracy and can be produced by a CMOS process. In a voice coil motor drive circuit (200) for executing positioning control of a magnetic head by feedback-controlling a driving current of a voice coil motor (108) for moving a magnetic head (106) over a magnetic disk for reading information from a storage track on the magnetic disk driven for rotation while a read state of the magnetic head is being monitored, head movement control such as a seek operation, a track follow operation etc, of the magnetic head is executed by PWM driving on the basis of a command value from a controller.
摘要翻译： 本发明提供了一种用于驱动和控制音圈电动机的电机驱动半导体集成电路，其可以通过PWM控制进行寻道操作，轨道跟随操作和稳定操作，具有期望的控制精度并且可以通过CMOS工艺产生。 在用于通过反馈控制音圈电动机（108）的驱动电流来执行磁头的定位控制的音圈电动机驱动电路（200）中，用于使磁头（106）移动到磁盘上，用于从 在磁头的读取状态被监视的同时驱动磁盘上的磁盘上的存储轨道，通过PWM驱动来执行磁头的诸如寻道操作，磁道跟随操作等的磁头移动控制，基于 来自控制器的命令值。
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7.发明申请Motor drive semiconductor integrated circuit and magnetic disk storage apparatus 审中-公开电机驱动半导体集成电路和磁盘存储装置公开(公告)号：US20070195451A1
公开(公告)日：2007-08-23
申请号：US11790520
申请日：2007-04-26
申请人： Yasuhiko Kokami
发明人： Yasuhiko Kokami
IPC分类号： G11B5/596
CPC分类号： G11B33/121 , G05B11/28 , G11B5/5547 , G11B25/043
摘要： The invention provides a motor drive semiconductor integrated circuit for driving and controlling a voice coil motor that can conduct a seek operation, a track follow operation and a settling operation through PWM control, has desired control accuracy and can be produced by a CMOS process. In a voice coil motor drive circuit for executing positioning control of a magnetic head by feedback-controlling a driving current of a voice coil motor for moving a magnetic head over a magnetic disk for reading information from a storage track on the magnetic disk driven for rotation while a read state of the magnetic head is being monitored, head movement control such as a seek operation, a track follow operation etc, of the magnetic head is executed by PWM driving on the basis of a command value from a controller.
摘要翻译： 本发明提供了一种用于驱动和控制音圈电动机的电动机驱动半导体集成电路，其可以通过PWM控制进行寻道操作，跟踪跟踪操作和稳定操作，具有期望的控制精度并且可以通过CMOS工艺产生。 在用于通过反馈控制音圈电动机的驱动电流的音圈电动机驱动电路中，用于使磁头在磁盘上移动，用于从驱动旋转的磁盘上的存储轨道读取信息 在监视磁头的读取状态的同时，通过基于来自控制器的命令值的PWM驱动来执行磁头的诸如寻道操作，磁道跟随操作等的磁头移动控制。
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公开(公告)号：US06903894B2
公开(公告)日：2005-06-07
申请号：US10012401
申请日：2001-12-12
CPC分类号： G11B5/5547 , G11B5/012 , G11B23/0007
摘要： A magnetic disc storage apparatus including a magnetic head for reading information from a storage track on a magnetic storage disc driven to spin, a voice coil motor for moving the magnetic head above the disc, and a magnetic head drive system for executing a position control of the magnetic head by controlling driving current of the voice coil motor by a feedback control while monitoring a state of reading the magnetic head in which the magnetic head drive system includes multi-mode driving means for executing a linear drive mode for controlling, as an analog amount, the driving current of the voice coil motor when an amount of driving to move the magnetic head is small and executing a pulse drive mode for controlling, as a digital amount, the driving current of the voice coil motor when the amount of driving to move the magnetic head is large.By the invention, both of high accuracy formation of position control of the magnetic head in tracking and high speed formation of access by shortening seek time are enabled while effectively reducing heating or EMI inducing read/write error.
摘要翻译： 一种磁盘存储装置，包括用于从驱动旋转的磁盘上的存储轨道读取信息的磁头，用于使磁头移动到盘上方的音圈电机，以及用于执行位置控制的磁头驱动系统 通过控制音圈电动机的驱动电流，同时监视读取磁头的状态，其中磁头驱动系统包括多模驱动装置，用于执行用于控制的线性驱动模式，作为模拟 当驱动磁头的驱动量小时，音圈电动机的驱动电流很小，并且执行脉冲驱动模式，用于当驾驶到驾驶员的数量为数字量时控制音圈电动机的驱动电流 移动磁头大。 通过本发明，可以实现高精度地形成磁头在跟踪中的位置控制和通过缩短查找时间的高速形成访问，同时有效地减少加热或EMI引起的读/写错误。
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公开(公告)号：US20050036228A1
公开(公告)日：2005-02-17
申请号：US10948220
申请日：2004-09-24
CPC分类号： G11B19/20 , G11B19/247 , H02P6/08 , H02P6/28
摘要： Currents of sine waveforms can be fed through coils by a relatively small-sized circuit, and thereby, highly dense magnetic storage can be realized with less rotation variations and a driving control circuit of a motor rotating at a low noise level can be provided. A coil of one phase of a three-phase brushless motor is driven with full amplitude at which an applied voltage becomes equal to a source voltage, and a coil of one of other phases is driven with gradually changing voltages so that a current of sine waveform is delivered, and a coil of the remaining phase is driven by feedback control so that a total current flowing through all coils becomes a predetermined current value.
摘要翻译： 正弦波形的电流可以通过相对较小尺寸的电路通过线圈馈送，从而可以以较小的旋转变化实现高度密集的磁存储，并且可以提供以低噪声水平旋转的电动机的驱动控制电路。 三相无刷电动机的一相线圈以全幅度驱动，施加的电压等于源电压，并且其中一相的线圈以逐渐变化的电压驱动，使得正弦波形的电流 并且通过反馈控制驱动剩余相的线圈，使得流过所有线圈的总电流成为预定电流值。
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公开(公告)号：US20110074324A1
公开(公告)日：2011-03-31
申请号：US12963392
申请日：2010-12-08
IPC分类号： H02P6/10
摘要： A control technology for a synchronous motor for suppressing rotational pulsation caused by variation in individuals without making a control algorithm complex is provided. In a motor drive system which is a control device for a synchronous motor, in order to suppress the pulsation component of N times as high as the AC frequency for driving the synchronous motor, a controller in which the phase property of the disturbance response of the controller with respect to the pulsation frequency is within ±45° is arranged. Therefore, the torque pulsation component generated from distortion in induction voltage or variation between phases is suppressed.
摘要翻译： 提供了一种用于抑制由个体变化引起的旋转脉动的同步电机的控制技术，而不使控制算法复杂化。 在作为同步电动机的控制装置的电动机驱动系统中，为了抑制用于驱动同步电动机的交流频率的N倍的脉动分量，控制器将其中的干扰响应的相位特性 相对于脉动频率的控制器设置在±45°以内。 因此，抑制了感应电压的变形或相位的变化而产生的转矩脉动成分。
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