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1. 发明申请

US20030178956A1 Rotation detective circuit of a dc brushless motor using a fixed bias voltage 失效
标题翻译：使用固定偏置电压的直流无刷电机的旋转检测电路
公开(公告)号：US20030178956A1
公开(公告)日：2003-09-25
申请号：US10101709
申请日：2002-03-21
申请人： Sunonwealth Electric Machine Industry Co., Ltd.
发明人： Alex Horng , Ying-Ya Lu , Ming-Sheng Wang
IPC分类号： H02P001/18 , H02P003/08 , H02P005/06 , H02P007/06 , H02K023/00
CPC分类号： H02P6/16 , H02P6/08 , H02P6/26
摘要： A rotation detective circuit of a dc brushless motor using a fixed bias voltage includes a transistor, and a signal adjuster. The signal adjuster is connected in series between the transistor and a driver circuit of the dc brushless motor, for adjusting signal output a fixed bias voltage from the driver circuit to the transistor. The signal adjuster can be selectively applied a fixed bias voltage manner or connected in series with a zener diode. The signal adjuster can be adjusted according to the feature of the motor driver IC, thereby enhancing the design of the rotation detective circuit.
摘要翻译：使用固定偏置电压的直流无刷电动机的旋转检测电路包括晶体管和信号调节器。信号调节器串联在晶体管和直流无刷电机的驱动电路之间，用于调节信号输出从驱动电路到晶体管的固定偏置电压。信号调节器可以选择性地施加固定偏置电压或与齐纳二极管串联连接。信号调节器可以根据电机驱动器IC的特点进行调整，从而提高旋转检测电路的设计。

2. 发明申请

US20020167287A1 Closed loop spindle motor acceleration control in a disc drive 有权
标题翻译：闭环主轴电机在磁盘驱动器中的加速控制
公开(公告)号：US20020167287A1
公开(公告)日：2002-11-14
申请号：US09966673
申请日：2001-09-28
申请人： SEAGATE TECHNOLOGY LLC
发明人： Jeffrey A. Heydt , David R. Street
IPC分类号： H02P001/18 , H02P003/08 , H02P005/06 , H02P007/06 , H02K023/00
CPC分类号： G11B19/20
摘要： Method and apparatus for accelerating a disc drive spindle motor from rest to a final operational velocity. During a low gear mode, the spindle motor is accelerated from rest to a first velocity through application of fixed duration drive pulses to the spindle motor. A high gear mode is next employed to accelerate the spindle motor from a first velocity to an intermediate velocity. Variable duration drive pulses are applied to the spindle motor each having a duration selected as a percentage of the duration of the most recently detected commutation period of the spindle motor. Once the spindle motor reaches the medium speed, commutation circuitry and back electromotive force (bemf) detection circuitry use detected bemf from the spindle motor to electronically commutate the motor to accelerate to the final operational speed.
摘要翻译：用于将盘驱动主轴电机从静止加速到最终操作速度的方法和装置。在低档模式下，通过对主轴电机施加固定持续时间的驱动脉冲，主轴电机从静止状态加速到第一速度。接下来采用高档模式来将主轴电机从第一速度加速到中间速度。可变持续时间驱动脉冲被施加到主轴电动机，每个主轴电动机的持续时间选择为最近检测到的主轴电动机的换向周期的持续时间的百分比。一旦主轴电机达到中等速度，换向电路和反电动势（bemf）检测电路使用来自主轴电机的检测到的电流来电动换向电机加速到最终的运行速度。

3. 发明申请

US20020130631A1 Device for disconnecting a neutral point of a motor 失效
标题翻译：用于断开电机中性点的装置
公开(公告)号：US20020130631A1
公开(公告)日：2002-09-19
申请号：US09811935
申请日：2001-03-19
申请人： DELPHI TECHNOLOGIES, INC.
发明人： Tomy Sebastian
IPC分类号： H02P001/18 , H02P003/08 , H02P005/06 , H02P007/06 , H02K023/00
CPC分类号： B62D5/046 , H02P6/34 , Y10S388/903
摘要： A circuit for disconnecting a neutral point of an electric machine includes an inductance connected to a lead of the electric machine; a three-terminal solid-state switch that has a first terminal connected to the inductance, a second terminal connected to the neutral point, and a third terminal for controlling a flow of current between the first and second terminals; a controlling circuit coupled to the three-terminal solid-state switch that includes a first loop that has a power source, a resistance, and a voltage regulator to maintain a first voltage upon the third terminal, and a second loop that has a power source, a resistance, and a trigger switch being controllably switched on to thereby close the first loop whereby a second voltage is applied to the three-terminal solid-state switch to thereby substantially electrically disconnect the first terminal from the second terminal.
摘要翻译：用于断开电机的中性点的电路包括连接到电机的引线的电感器; 具有连接到电感的第一端子，连接到中性点的第二端子和用于控制第一和第二端子之间的电流的第三端子的三端子固态开关; 耦合到所述三端固态开关的控制电路，所述控制电路包括具有电源，电阻和电压调节器的第一回路以维持所述第三端子上的第一电压，以及具有电源的第二回路，电阻和触发开关被可控地接通，从而闭合第一回路，由此第二电压被施加到三端固态开关，从而使第一端子与第二端子基本上电断开。

4. 发明申请

US20020084758A1 ADAPTIVE SYSTEM AND METHOD FOR SPINNING A POLYPHASE DISK DRIVE MOTOR FROM A STATIONARY POSITION 有权
标题翻译：用于从静止位置旋转多相驱动电机的自适应系统和方法
公开(公告)号：US20020084758A1
公开(公告)日：2002-07-04
申请号：US09751412
申请日：2000-12-29
发明人： Ender T. Eroglu , Paolo Menegoli , Whitney H. Li
IPC分类号： H02P001/18 , H02P003/08 , H02P005/06 , H02P007/06 , H02K023/00
CPC分类号： G11B19/28
摘要： A method and system are disclosed for spinning the spindle motor of a disk drive from a stationary state to an operable state that is suitable for performing a memory access operation. The method and system include energizing the polyphase motor in a first predetermined commutation phase; detecting whether a zero crossing of a back electromotive force (bemf) signal corresponding to the first predetermined commutation phase occurs; sensing whether the polyphase motor advanced to a next successive commutation phase relative to the first predetermined commutation phase; and performing an acceleration procedure to accelerate the speed of the polyphase motor towards a desired speed based upon a detected zero crossing of the bemf signal and an affirmative determination that the polyphase motor advanced to a next successive commutation phase relative to the first predetermined commutation phase.
摘要翻译：公开了一种用于将盘驱动器的主轴电机从静止状态旋转到适于执行存储器访问操作的可操作状态的方法和系统。所述方法和系统包括在第一预定换向阶段激励所述多相电动机; 检测是否发生与第一预定换相相对应的反电动势（bemf）信号的过零点; 感测所述多相电动机相对于所述第一预定换向相位是否前进到下一个连续的换相阶段; 以及基于检测到的所述bemf信号的过零点和所述多相电动机相对于所述第一预定换相阶段前进到下一个连续换向相位的肯定确定，执行加速过程以将所述多相电动机的速度加速到期望速度。

5. 发明申请

US20020027423A1 Method and circuit for driving a brushless dc motor to reduce low acoustic noise 审中-公开
标题翻译：用于驱动无刷直流电动机以减少低声噪声的方法和电路
公开(公告)号：US20020027423A1
公开(公告)日：2002-03-07
申请号：US09957369
申请日：2001-09-20
申请人： Texas Instruments, Inc.
发明人： Bertram J. White
IPC分类号： H02P001/18 , H02P003/08 , H02P005/06 , H02P007/06 , H02K023/00
CPC分类号： H02P6/182 , H02P6/08 , H02P6/10
摘要： A method and circuit (16) for driving a polyphase dc motor (14) of the type used in a mass data storage device (10) includes a commutator (55) for commutating drive voltages among windings (44-46) of the dc motor (14). In each commutation cycle, drive voltages are applied to two windings and a current summed from currents induced by the drive voltages is sunk from a third winding. A circuit (76) is provided for pulse width modulating the drive voltages during successive phase commutation cycles in respective pulse width modulated (PWM) cycles, and a circuit (66) is provided for measuring an amount of energy delivered to the motor from a beginning of each PWM cycle. A circuit (78-80, 70-72) terminates the drive voltages in a PWM cycle when the circuit (66) for measuring measures a predetermined amount of energy that has been delivered to the motor during the PWM cycle.
摘要翻译：一种用于驱动在大容量数据存储装置（10）中使用的类型的多相直流电动机（14）的方法和电路（16）包括一个换向器（55），用于在直流电动机的绕组（44-46）之间换向驱动电压（14）。在每个换向循环中，将驱动电压施加到两个绕组，并且从由驱动电压引起的电流相加的电流从第三绕组沉没。提供了一个电路（76），用于在相应的脉冲宽度调制（PWM）周期期间的连续相位换向循环期间对驱动电压进行脉冲宽度调制，并且提供一个电路（66），用于测量一开始就传送到电动机的能量的每个PWM周期。当用于测量的电路（66）在PWM周期期间测量已经传送到电动机的预定量的能量时，电路（78-80,70-72）以PWM周期终止驱动电压。

6. 发明申请

US20010048279A1 Methods and apparatus for selecting an electronically commutated motor speed 有权
标题翻译：选择电子换向马达速度的方法和装置
公开(公告)号：US20010048279A1
公开(公告)日：2001-12-06
申请号：US09747868
申请日：2000-12-22
发明人： Brian L. Beifus , Louis Sulfstede , Kamron M. Wright , Glen C. Young
IPC分类号： H02P001/18 , H02P003/08 , H02P005/06 , H02P007/06 , H02K023/00
CPC分类号： H02P6/08
摘要： An electronically commutated motor assembly permits a user to select discrete operating speed options to operate an electronically commutated motor. The assembly includes a motor, an input/output unit electrically connected to the motor, a connector and board and a microprocessor. The connector and board includes an electrically erasable programmable read-only memory (EEPROM), a plurality of low voltage signal connections for programming the EEPROM, and a plurality of speed signal connections for selecting an operating speed for the electronically commutated motor. The low voltage signal connections permit the EEPROM to be programmed with speed tables containing schedules of operating speeds.
摘要翻译：电子换向马达组件允许用户选择离散运行速度选项来操作电子换向马达。组件包括电动机，电连接到电动机的输入/输出单元，连接器和板以及微处理器。连接器和板包括电可擦除可编程只读存储器（EEPROM），用于编程EEPROM的多个低电压信号连接以及用于选择电子换向电动机的操作速度的多个速度信号连接。低电压信号连接允许将EEPROM编程为包含运行速度计划的速度表。

7. 发明申请

US20010040438A1 CONTROL OF A BRUSHLESS MOTOR 有权
标题翻译：无刷电机的控制
公开(公告)号：US20010040438A1
公开(公告)日：2001-11-15
申请号：US09246398
申请日：1999-02-09
发明人： BRUNO MAURICE , JEAN-MARIE CHARRETON
IPC分类号： H02P001/18 , H02P003/08
CPC分类号： H02P6/15
摘要： A method and apparatus for controlling a brushless motor having a plurality of windings switched through a sequence of steps includes determining a transition time from one step to the next. The transition time is determined by detecting a zero crossing of a back emf in one of the plurality of windings. A delayed time to be added to the transition time is determined wherein the delayed time is selected according to the step in the sequence of steps being executed and is dependent on the duration of one of a preceding interval between zero crossings. A delay time proportional to a duration of a last shortest interval is supplied to follow a longest interval. A delay time proportional to a duration of a last longest interval is supplied to follow a shortest interval and a delay time proportional to a duration of a medium interval is supplied to follow a medium interval. The method may be used, for example, with a star or delta connected motor having any number of windings.
摘要翻译：一种用于控制具有通过一系列步骤切换的多个绕组的无刷电动机的方法和装置包括确定从一步到下一步的转变时间。通过检测多个绕组中的一个绕组中的反电动势的过零点来确定转换时间。确定要添加到转换时间的延迟时间，其中根据执行的步骤序列中的步骤选择延迟时间，并且取决于过零之间的先前间隔之一的持续时间。与最后一个最短间隔的持续时间成比例的延迟时间被提供以跟随最长的间隔。提供与最后最长间隔的持续时间成比例的延迟时间以跟随最短间隔，并且提供与中间间隔的持续时间成比例的延迟时间以跟随介质间隔。该方法可以例如使用具有任何数量的绕组的星形或三角形连接的电动机。

8. 发明申请

US20040256926A1 Brushless motor and disk drive including the same 审中-公开
公开(公告)号：US20040256926A1
公开(公告)日：2004-12-23
申请号：US10893690
申请日：2004-07-16
申请人： Nidec Corporation
发明人： Eiji Miyamoto
IPC分类号： H02K007/00 , H02K011/00 , H02P001/18 , H02P003/08
CPC分类号： H02K29/08 , Y10S310/06
摘要： A brushless motor includes a rotor position detecting device disposed between stator teeth, rather than directly below a rotor magnet, so that the distance between a lower end of a rotor magnet and a stationary frame is minimized. This results in a thinner brushless motor than conventional designs. In the preferred embodiment of the present invention, the rotor position detecting device is a Hall device.

9. 发明申请

US20030102830A1 Driving circuit for brushless DC motor 审中-公开
标题翻译：无刷直流电机驱动电路
公开(公告)号：US20030102830A1
公开(公告)日：2003-06-05
申请号：US10286858
申请日：2002-11-04
发明人： Eiji Kubozuka , Koji Mizukami
IPC分类号： H02P001/18 , H02P003/08
CPC分类号： H02P6/16 , H02P6/28
摘要： The driving circuit comprises a current control signal generator means and a current switching circuit. The current control signal generator means comprises a current mode switching circuit and a current mode switching time setting means that counts reference clock pulses and outputs a counter signal until the number of pulses counted reaches a predetermined value. The current mode switching circuit chooses a three-phase current mode or a two-phase current mode according to the counter signal being transmitted or not and transmits the current mode chosen to the current switching circuit as current control signals.
摘要翻译：驱动电路包括电流控制信号发生器装置和电流切换电路。电流控制信号发生器装置包括电流模式切换电路和电流模式切换时间设置装置，其对参考时钟脉冲进行计数并输出计数器信号，直到所计数的脉冲数达到预定值。电流模式切换电路根据正在发送的计数器信号选择三相电流模式或二相电流模式，并将所选择的当前模式作为电流控制信号发送到当前开关电路。

10. 发明申请

US20020180388A1 Single board motor controller 有权
标题翻译：单板电机控制器
公开(公告)号：US20020180388A1
公开(公告)日：2002-12-05
申请号：US09874502
申请日：2001-06-05
发明人： Mitchell S. Fletcher
IPC分类号： H02P001/18 , H02P003/08 , H02P005/06 , H02P007/06 , H02K023/00
CPC分类号： H02P6/34 , B64G1/283 , B64G1/286
摘要： A digital motor controller circuit including a an energy storage device, a bus protection circuit, an input signal selector, a combiner, a calibration device for altering parameters for different applications, a compensator, a motor driver circuit, and feedback circuitry for controlling a motor with a minimum of cost and space requirements.
摘要翻译：一种数字电动机控制器电路，包括能量存储装置，总线保护电路，输入信号选择器，组合器，用于改变不同应用的参数的校准装置，补偿器，电动机驱动器电路和用于控制电动机的反馈电路具有最低的成本和空间要求。

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