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1. 发明授权

US06459220B1 Spindle-motor control method, spindle-motor control device, spindle-motor drive circuit and disk device 失效
标题翻译：主轴电机控制方式，主轴电机控制装置，主轴电机驱动电路和磁盘装置
公开(公告)号：US06459220B1
公开(公告)日：2002-10-01
申请号：US09546916
申请日：2000-04-11
申请人： Hideshi Mochizuki , Hiroshi Kumita , Shigenori Yanagi , Tomoki Yokoyama
发明人： Hideshi Mochizuki , Hiroshi Kumita , Shigenori Yanagi , Tomoki Yokoyama
IPC分类号： H02P602
CPC分类号： G11B19/20 , H02P23/186
摘要： This invention relates to a control method, control device, and drive circuit for controlling the rpm of a spindle motor in order to reduce the rise time of the spindle motor. There is a discharge circuit (91-2) in the charge pump (91) of a spindle-motor driver (38). A control circuit (12) detects when the rpm of the spindle motor reaches near a target rpm, and discharges the charge pump (91). In this way, the rotation error near the target rpm is discharged, so it is possible to control and suppress overshoot. This makes it possible to reduce the rise time.
摘要翻译：本发明涉及一种用于控制主轴电机的转速的控制方法，控制装置和驱动电路，以减少主轴电动机的上升时间。在主轴 - 电动机驱动器（38）的电荷泵（91）中具有放电电路（91-2）。控制电路（12）检测主轴电动机的转速何时达到目标转速附近，并且对电荷泵（91）进行放电。以这种方式，目标转速附近的旋转误差被放电，因此可以控制和抑制过冲。这使得可以减少上升时间。

2. 发明授权

US06404153B2 Motor and disk drive apparatus 失效
公开(公告)号：US06404153B2
公开(公告)日：2002-06-11
申请号：US09731196
申请日：2000-12-06
申请人： Makoto Gotou
发明人： Makoto Gotou
IPC分类号： H02P602
CPC分类号： H02P6/085
摘要： In a motor and a disk drive apparatus using the motor, a switching control part produces a PWM pulse signal in response to the comparison result between a current detected signal and a command signal. An activate control part determines the active periods of power transistors in response to the holding state of the state holding part, and performs high-frequency switching operation to turn ON/OFF the power transistors in response to the PWM pulse signal of the switching control part. Furthermore, a voltage detecting part stops the detection of terminal voltages for a predetermined time in response to the PWM operation by the switching control part. After the stop, the voltage detecting part resumes the detection of the terminal voltages. This prevents improper detection caused by PWM noise.

3. 发明授权

US06437525B1 Method and apparatus for spinning a multiphase motor for a disk drive system from an inactive state 有权
标题翻译：用于从不活动状态旋转用于磁盘驱动系统的多相电动机的方法和装置
公开(公告)号：US06437525B1
公开(公告)日：2002-08-20
申请号：US09643218
申请日：2000-08-18
申请人： Paolo Menegoli
发明人： Paolo Menegoli
IPC分类号： H02P602
CPC分类号： G11B19/20
摘要： A method and apparatus are disclosed for controlling the operation of a multiphase motor, and particular to spinning the motor from an inactive state to an operable state. The method and apparatus include initially sensing an electrical characteristic of one or more phase windings, such as performing an inductive sense operation. Having sensed values of the electrical characteristic, a determination is made as to whether or not the motor's rotor is spinning. Upon a determination that the rotor is not spinning, a spin-up operation is performed to bring the spin of the rotor to operable spin speeds. On the other hand, upon a determination that the rotor is spinning, a resynchronization operation is performed to synchronize the application of drive signals for the phase windings of the motor to the dynamic position of the rotor.
摘要翻译：公开了一种用于控制多相电动机的操作的方法和装置，特别是将电动机从非活动状态旋转到可操作状态。该方法和装置包括初始地感测一个或多个相绕组的电特性，例如执行电感检测操作。检测到电特性的值后，确定电机的转子是否旋转。在确定转子不旋转的情况下，执行旋转操作以使转子的旋转达到可操作的旋转速度。另一方面，在确定转子正在旋转的情况下，执行再同步操作以使电动机的相绕组的驱动信号的施加与转子的动态位置同步。

4. 发明授权

US06404152B1 Motor control device 失效
标题翻译：电机控制装置
公开(公告)号：US06404152B1
公开(公告)日：2002-06-11
申请号：US09463654
申请日：2000-01-28
申请人： Takashi Kobayashi , Fumio Tajima , Shoichi Kawamata , Yutaka Matsunobu , Ryoso Masaki , Suetaro Shibukawa , Osamu Koizumi
发明人： Takashi Kobayashi , Fumio Tajima , Shoichi Kawamata , Yutaka Matsunobu , Ryoso Masaki , Suetaro Shibukawa , Osamu Koizumi
IPC分类号： H02P602
CPC分类号： H02P6/10 , H02P6/00
摘要： In order to reduce undesired sound caused by circular ring oscillation in the diametric direction of the stator by an electromagnetic force, electromagnetic force drift memory stores a drift information of the electromagnetic force causing the circular ring oscillation of the stator. This electromagnetic force drift information is read out according to the position information &thgr; and is supplied to a correction coefficient generating circuitry. Correction coefficient generating circuitry corrects the amplitude component of the activation current wave from by forming correction coefficient &bgr; (t) of the activation current so as to cancel the electromagnetic force harmonic component in the diametric direction which component is the component of the circular ring oscillation of the stator.
摘要翻译：电磁力漂移存储器为了通过电磁力减少定子的直径方向的圆环振动引起的不希望的声音，存储导致定子的圆环振荡的电磁力的漂移信息。根据位置信息θ读出该电磁力漂移信息，并将其提供给校正系数生成电路。校正系数产生电路通过形成激活电流的校正系数β（t）来校正激活电流波的振幅分量，以抵消直径方向上的电磁力谐波分量，该分量是圆环振荡的分量定子。

5. 发明授权

US06534936B2 Disk drive employing method of spinning up spindle motor including detecting BEMF polarity change for selecting initial commutation state 有权
标题翻译：采用旋转主轴电机的磁盘驱动器，包括检测BEMF极性变化，以选择初始换向状态
公开(公告)号：US06534936B2
公开(公告)日：2003-03-18
申请号：US09560918
申请日：2000-04-28
申请人： Carl R. Messenger , Russ A. Quisenberry
发明人： Carl R. Messenger , Russ A. Quisenberry
IPC分类号： H02P602
CPC分类号： G11B19/20
摘要： A disk drive is connectable to a power supply voltage and includes a spindle motor, a spindle motor driver, a spindle motor controller, and a detector. The spindle motor has windings and a rotatable rotor. The spindle motor driver is connected to the windings and connectable to the voltage. The spindle motor controller commands the spindle motor driver to apply the voltage across at least one of the windings to cause the rotor to rotate, which induces a BEMF having a polarity across each of the windings. The spindle motor controller subsequently commands the spindle motor driver to remove the applied voltage across the windings, and the detector monitors the BEMF in each of the windings to detect the polarity of the BEMF in each of the windings to generate a previous multi-bit sequence representing a previous phase position ({circumflex over (&thgr;)}n) of the rotor and subsequently detect a change in the polarity of the BEMF in one of the windings to generate a present multi-bit sequence representing a present position (&thgr;n) of the rotor. The spindle motor controller is responsive to the previous phase position ({circumflex over (&thgr;)}n) and the present phase position (&thgr;n) of the rotor for selecting an initial commutation state for commanding the spindle motor driver to initiate a spin-up commutation sequence starting from the selected initial commutation state such that the voltage is sequentially applied across a selected combination of the windings in order to spin-up the spindle motor to an operating spin-rate.
摘要翻译：磁盘驱动器可连接到电源电压，包括主轴电机，主轴电机驱动器，主轴电机控制器和检测器。主轴电机具有绕组和可转动的转子。主轴电机驱动器连接到绕组并连接到电压。主轴电动机控制器命令主轴电动机驱动器将电压施加到至少一个绕组上，以使转子旋转，这引起一个绕每个绕组具有极性的BEMF。主轴电动机控制器随后命令主轴电动机驱动器去除绕组上施加的电压，并且检测器监测每个绕组中的BEMF以检测每个绕组中的BEMF的极性，以产生先前的多位序列代表转子的先前相位位置（thetan），随后检测绕组中的一个绕组中的BEMF的极性的变化，以产生表示转子的当前位置（thetan）的当前多位序列。主轴电动机控制器响应于转子的先前相位位置（thetan）和当前相位位置（thetan），用于选择初始换向状态，用于指令主轴电动机驱动器从所选择的初始位置开始启动升压换向序列换向状态，使得电压顺序地施加在选定的绕组组合上，以便将主轴电机旋转到操作旋转速率。

6. 发明授权

US06342770B1 Method for starting brushless DC motors 失效
标题翻译：启动无刷直流电机的方法
公开(公告)号：US06342770B1
公开(公告)日：2002-01-29
申请号：US09634913
申请日：2000-08-09
申请人： Waldemar Stephan , Steffen Katzer
发明人： Waldemar Stephan , Steffen Katzer
IPC分类号： H02P602
CPC分类号： H02P6/21
摘要： Disclosed is a method of starting an electronically commutated DC motor including a stator having at least one winding and a rotor. The winding is excited with at least one initial start pulse having a voltage and a repetition frequency which are sufficient to ensure rotation of the rotor under a maximum load in normal operation. Back EMF generated in the winding by the rotation of the rotor is detected. If the back EMF is detected, the rotation of the motor is controlled based on the detected back EMF. If the back EMF is not detected, the voltage of the at least one initial start pulse is increased until any of (i) the back EMF is detected, (ii) a current generated in the winding by said at least one initial start pulse reaches a maximum acceptable current level, and (iii) the voltage of said at least one initial start pulse reaches a maximum acceptable voltage level. In the latest instance, supply of the at least one initial start pulse to the winding is discontinued.
摘要翻译：公开了一种启动电子换向直流电动机的方法，该电动机包括具有至少一个绕组和转子的定子。绕组被激励，其中至少一个具有电压和重复频率的初始起始脉冲足以在正常操作中在最大负载下确保转子旋转。检测绕组中由转子旋转产生的反电动势。如果检测到反电动势，则基于检测到的反电动势来控制电动机的旋转。如果没有检测到反电动势，则至少一个初始起始脉冲的电压增加直到检测到（i）反电动势中的任一个，（ii）由所述至少一个初始起始脉冲在绕组中产生的电流达到最大可接受的电流电平，和（iii）所述至少一个初始起始脉冲的电压达到最大可接受的电压电平。在最近的情况下，停止向绕组提供至少一个初始起始脉冲。

7. 发明授权

US06597140B2 Sensorless motor starting system 失效
公开(公告)号：US06597140B2
公开(公告)日：2003-07-22
申请号：US09901272
申请日：2001-07-09
申请人： Seiryu Takayama , Takao Maruyama
发明人： Seiryu Takayama , Takao Maruyama
IPC分类号： H02P602
CPC分类号： H02P6/20 , G11B19/20
摘要： A sensorless motor starting system of a simplified structure is capable of starting a sensorless spindle motor under optimal target starting conditions with low power consumption in accordance with the motor type and the kind of an optical disc to be driven, by executing manual fine adjustment of start parameters in response to any abnormal rotation caused at the start time. In this system, a rotation frequency signal is outputted from an edge detector on the basis of position signals in a start acceleration mode, and then is compared with a reference frequency signal by a comparator. And if the result of the decision therefrom signifies abnormal rotation, a switch is turned to its another terminal to select a manual setting mode. An operator performs manual fine adjustments of a phase switching time, a phase switching number and a drive voltage in order while monitoring phase switching control signals and position signals to thereby normalize the start state of the sensorless spindle motor. Consequently, the spindle motor can be started under the target conditions in compliance with any characteristic change of the motor and the characteristic of the driver.

8. 发明授权

US06424106B1 Motor 有权
公开(公告)号：US06424106B1
公开(公告)日：2002-07-23
申请号：US09820450
申请日：2001-03-29
申请人： Makoto Gotou , Masaaki Ochi , Hideaki Mori , Hideki Nishino
发明人： Makoto Gotou , Masaaki Ochi , Hideaki Mori , Hideki Nishino
IPC分类号： H02P602
摘要： FET power transistors of a power supplying part execute high-frequency switching operation and form current paths to three-phase windings. A voltage detecting part compares terminal voltages of the three-phase windings and produces a detected pulse signal in response to a comparison result. A state shifting part and an activation control part control active periods of the FET power transistors in response to the detected pulse signal. A commanding part produces a command signal in response to an output pulse signal of the voltage detecting means. A switching operation block produces a switching pulse signal in response to a comparison result of a current-detection signal with the command signal, and causes at least an FET power transistor of the power supplying part to perform high-frequency switching in response to the switching pulse signal. The state shifting part produces a timing signal after an adjust time from the detection of the detected pulse signal and shift-holds a holding state in response to the timing signal. The state shifting part changes the adjust time smaller in case that the command signal is larger than a predetermined value, thereby making the product value of the adjust time and the rotational speed smaller in the case.

9. 发明授权

US06331757B1 Staggered pulse width modulation apparatus and method for EMI minimization in motor 失效
标题翻译：电动机EMI最小化的交错脉宽调制装置及方法
公开(公告)号：US06331757B1
公开(公告)日：2001-12-18
申请号：US09100000
申请日：1998-06-19
申请人： John Edward Makaran
发明人： John Edward Makaran
IPC分类号： H02P602
CPC分类号： H02P6/08 , H02P6/34
摘要： An apparatus and method for minimizing electromagnetic interference in a unipolar phase motor having a supply current is provided. The motor further has a plurality of motor phases energizable with pulse width modulation (PWM). The method includes calculating the current harmonics on a right edge aligned PWM, calculating the current harmonics on a left edge aligned PWM pulse, determining the supply current by summing the current harmonics for the right edge aligned PWM pulse and the current harmonics for the left edge aligned PWM pulse, energizing a first motor phase with PWM, and staggering the PWM pulses for each successive motor phase by varying the energizing of any two adjacent energized phases based on the amount of supply current in the motor, the staggering of the PWM pulses minimizing electromagnetic interference and current harmonic generation due to an increase in the supply current.
摘要翻译：提供一种用于使具有电源电流的单相电动机中的电磁干扰最小化的装置和方法。电动机还具有能够通过脉宽调制（PWM）激励的多个电动机相。该方法包括计算右边缘对准PWM上的电流谐波，计算左边缘对准PWM脉冲上的电流谐波，通过将右边缘对齐PWM脉冲的电流谐波和左边缘的电流谐波求和来确定电源电流对准PWM脉冲，通过PWM激励第一电动机相位，并且通过基于电动机中的电源电流的变化来改变任何两个相邻通电相的通电来交错每个连续的电动机相位的PWM脉冲，PWM脉冲的交错最小化由于电源电流的增加，电磁干扰和电流谐波产生。

10. 发明授权

US06208160B1 Detection of a perturbation in the synchronization of the driving in a tripolar mode of a brushless, sensorless DC motor for minimizing torque ripple 有权
标题翻译：检测无刷，无传感器直流电机在三极模式下的驱动同步中的扰动，用于最小化转矩脉动
公开(公告)号：US06208160B1
公开(公告)日：2001-03-27
申请号：US09134398
申请日：1998-08-14
申请人： Michele Boscolo , Marco Viti
发明人： Michele Boscolo , Marco Viti
IPC分类号： H02P602
CPC分类号： H02P6/18 , H02P6/08 , H02P6/20
摘要： A method of detecting the relative position of the rotor of a sensorless DC brushless motor driven in a tripolar mode includes the step of monitoring the voltage difference between the drive voltage that is applied to at least one winding of the motor and the voltage drop on a resistive portion of the drive current path through the same winding. The voltage drop may be detected between the two current terminals of an MOS power device of the driving bridge of the winding. The monitoring of the voltage difference is used to signal a perturbation from a pre-existing condition of correct synchronization of the phase switchings during a driving phase in a tripolar mode of the motor. Such information may be used by the driving system to switch to one of a bipolar mode, a unipolar mode or a tripolar mode with momentary drive interruptions, until restoring a correct synchronization condition and/or attain a correct rotating speed.
摘要翻译：检测以三极模式驱动的无传感器DC无刷电动机的转子的相对位置的方法包括监视施加到电动机的至少一个绕组的驱动电压与电动机的电压降之间的电压差的步骤通过相同绕组的驱动电流通路的电阻部分。可以在绕组的驱动桥的MOS功率器件的两个电流端子之间检测电压降。电压差的监视用于在电动机的三极模式中的驱动阶段期间从相位切换的正确同步的预先存在的状态发出扰动信号。驱动系统可以使用这样的信息来切换到具有瞬时驱动中断的双极模式，单极模式或三极模式之一，直到恢复正确的同步状态和/或获得正确的转速。

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