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1.发明申请DATA STORAGE DEVICE OPTIMIZING SPINDLE MOTOR POWER WHEN TRANSITIONING INTO A POWER FAILURE MODE 有权数据存储设备当电源故障模式转换时优化主轴电机功率公开(公告)号：US20160180877A1
公开(公告)日：2016-06-23
申请号：US14987581
申请日：2016-01-04
发明人： Michael T. Nicholls
IPC分类号： G11B19/20
CPC分类号： G11B19/20 , G11B19/2081 , G11B21/12
摘要： A data storage device is disclosed comprising a spindle motor configured to rotate a disk, wherein the spindle motor comprises a plurality of windings. The windings are commutated based on a commutation sequence while applying a driving voltage to each winding, wherein the driving voltage comprises an operating amplitude during normal operation. When a supply voltage falls below a threshold, the spindle motor is configured into a power generator by at least reducing the amplitude of the driving voltage to substantially zero and then incrementally increasing the amplitude of the driving voltage by at least two steps toward the operating amplitude.
摘要翻译： 公开了一种数据存储装置，其包括被配置为旋转盘的主轴马达，其中所述主轴马达包括多个绕组。 绕组根据换向顺序进行换向，同时向每个绕组施加驱动电压，其中驱动电压包括在正常工作期间的工作幅度。 当电源电压低于阈值时，主轴电动机通过至少将驱动电压的幅度降至基本为零，然后将驱动电压的振幅逐渐增加至操作振幅的两个步长，将其配置成发电机 。
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2.发明授权公开(公告)号：US09761266B2
公开(公告)日：2017-09-12
申请号：US14987581
申请日：2016-01-04
发明人： Michael T. Nicholls
CPC分类号： G11B19/20 , G11B19/2081 , G11B21/12
摘要： A data storage device is disclosed comprising a head actuated over a disk, and a spindle motor configured to rotate the disk, wherein the spindle motor comprises a plurality of windings. The windings of the spindle motor are commutated based on a commutation sequence while applying a driving voltage to each winding, wherein the driving voltage comprises an operating polarity during normal operation. When a supply voltage falls below a threshold while the spindle motor is rotating the disk, the spindle motor is configured into a power generator by at least reversing the polarity of the driving voltage for an interval and then reversing the polarity of the driving voltage back to the operating polarity.
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3.发明授权公开(公告)号：US09141177B1
公开(公告)日：2015-09-22
申请号：US14289413
申请日：2014-05-28
CPC分类号： G06F1/3268 , G06F1/3296 , G11B19/047 , G11C5/147 , G11C5/148 , G11C29/021 , G11C29/44
摘要： A data storage device is disclosed comprising a non-volatile memory powered by a supply voltage. The supply voltage is compared to a power loss threshold, and when the supply voltage falls below the power loss threshold, a power loss event is detected and an emergency operation is executed. The power loss threshold is decreased, and after an interval the power loss threshold is increased.
摘要翻译： 公开了一种数据存储设备，其包括由供电电压供电的非易失性存储器。 将电源电压与功率损耗阈值进行比较，并且当电源电压下降到功率损耗阈值以下时，检测到功率损失事件并执行紧急操作。 功率损耗阈值降低，间隔后功率损耗阈值增加。
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4.发明授权Data storage device adjusting a power loss threshold based on samples of supply voltage 有权数据存储装置根据电源电压的样本调整功率损耗阈值公开(公告)号：US09047932B1
公开(公告)日：2015-06-02
申请号：US14260426
申请日：2014-04-24
CPC分类号： G11B19/047 , G11C5/147 , G11C29/021 , G11C29/44
摘要： A data storage device is disclosed comprising a non-volatile memory. A supply voltage for powering the non-volatile memory is sampled to generate supply voltage samples. A power loss threshold is adjusted based on the supply voltage samples, and a power loss event is detected based on the power loss threshold and the supply voltage, wherein an emergency operation is executed when the power loss event is detected.
摘要翻译： 公开了一种包括非易失性存储器的数据存储设备。 对非易失性存储器供电的电源电压进行采样以产生电源电压采样。 基于电源电压采样来调整功率损失阈值，并且基于功率损耗阈值和电源电压来检测功率损失事件，其中在检测到电力损失事件时执行紧急操作。
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5.发明授权Data storage device optimizing spindle motor power when transitioning into a power failure mode 有权数据存储设备在转换到停电模式时优化主轴电机功率公开(公告)号：US09230593B1
公开(公告)日：2016-01-05
申请号：US14582068
申请日：2014-12-23
发明人： Michael T. Nicholls
CPC分类号： G11B19/20 , G11B19/2081 , G11B21/12
摘要： A data storage device is disclosed comprising a spindle motor configured to rotate a disk, wherein the spindle motor comprises a plurality of windings. The windings are commutated based on a commutation sequence while applying a driving voltage to each winding, wherein the driving voltage comprises an operating amplitude during normal operation. When a supply voltage falls below a threshold, the spindle motor is configured into a power generator by at least reducing the amplitude of the driving voltage to substantially zero and then incrementally increasing the amplitude of the driving voltage by at least two steps toward the operating amplitude.
摘要翻译： 公开了一种数据存储装置，其包括被配置为旋转盘的主轴马达，其中所述主轴马达包括多个绕组。 绕组根据换向顺序进行换向，同时向每个绕组施加驱动电压，其中驱动电压包括在正常工作期间的工作幅度。 当电源电压低于阈值时，主轴电动机通过至少将驱动电压的幅度降至基本为零，然后将驱动电压的振幅逐渐增加至操作振幅的两个步长，将其配置成发电机 。
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公开(公告)号：US09171567B1
公开(公告)日：2015-10-27
申请号：US14287511
申请日：2014-05-27
摘要： A data storage device is disclosed comprising a head actuated over a disk, and a spindle motor configured to rotate the disk. A speed of the spindle motor is sampled, and an error signal is generated based on a difference between the sampled speed and a target speed. A sliding mode control signal for controlling a speed of the spindle motor is generated based on a first non-zero gain when the error signal is greater than zero and less than a first positive threshold, and a second non-zero gain when the error signal is greater than the first positive threshold.
摘要翻译： 公开了一种数据存储装置，其包括在盘上驱动的头部，以及配置成使盘旋转的主轴马达。 主轴电动机的速度被采样，并且基于采样速度和目标速度之间的差异产生误差信号。 当误差信号大于零且小于第一正阈值时，基于第一非零增益产生用于控制主轴电动机的速度的滑动模式控制信号，当误差信号 大于第一个正阈值。
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7.发明授权Data storage device compensating for repeatable disturbance when commutating a spindle motor 有权数据存储设备补偿主轴电机换向时可重复的干扰公开(公告)号：US08982501B1
公开(公告)日：2015-03-17
申请号：US14492318
申请日：2014-09-22
CPC分类号： G11B19/28
摘要： A data storage device is disclosed comprising a head actuated over a disk, and a spindle motor configured to rotate the disk, wherein the spindle motor comprises a plurality of windings. A commutation controller is configured to commutate the windings based on a commutation sequence. Compensation values are generated based on: A1 sin ω1t+B1 cos ωlt where A1 and B1 are adaptable coefficients and ω1 represents a first frequency based on a first mechanical parameter of the spindle motor. The compensation values are used to drive the commutation sequence of the commutation controller.
摘要翻译： 公开了一种数据存储装置，包括在盘上驱动的磁头和被配置为旋转磁盘的主轴电动机，其中主轴电动机包括多个绕组。 换向控制器被配置为基于换向序列对绕组进行换向。 补偿值基于：A1sinω1t+ B1cosωlt，其中A1和B1是适应系数，ω1表示基于主轴电动机的第一机械参数的第一频率。 补偿值用于驱动换向控制器的换向序列。
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8.发明授权Data storage device periodically re-initializing spindle motor commutation sequence based on timing data 有权数据存储设备根据定时数据定期重新初始化主轴电机换向序列公开(公告)号：US09171568B1
公开(公告)日：2015-10-27
申请号：US14315143
申请日：2014-06-25
摘要： A data storage device is disclosed comprising a disk comprising timing data, a spindle motor configured to rotate the disk, wherein the spindle motor comprises a plurality of windings, and a head actuated over the disk. A phase of a commutation controller is initialized based on the timing data on the disk, and a commutation sequence of the commutation controller is driven based on the timing data on the disk, wherein the commutation controller is configured to commutate the windings based on the commutation sequence. The phase of the commutation controller is re-initialized based on the timing data on the disk, thereby compensating for a cumulative phase error when driving the commutation sequence based on the timing data on the disk.
摘要翻译： 公开了一种数据存储装置，包括包括定时数据的盘，被配置为旋转盘的主轴马达，其中主轴马达包括多个绕组，以及在盘上致动的头。 基于盘上的定时数据来初始化换向控制器的相位，并且基于盘上的定时数据驱动换向控制器的换向序列，其中换向控制器被配置为基于换向来换向绕组 序列。 基于磁盘上的定时数据重新初始化换向控制器的相位，从而基于盘上的定时数据来驱动换向序列时的累积相位误差的补偿。
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9.发明授权Data storage device commutating a spindle motor using closed-loop rotation phase alignment 有权数据存储设备使用闭环旋转相位对准来转换主轴电机公开(公告)号：US09099147B1
公开(公告)日：2015-08-04
申请号：US14492357
申请日：2014-09-22
CPC分类号： G11B19/28 , G11B15/026 , G11B15/48 , G11B19/06 , G11B19/20 , G11B19/2054 , G11B19/2063
摘要： A data storage device is disclosed comprising a head actuated over a disk, and a spindle motor configured to rotate the disk, wherein the spindle motor comprises a plurality of windings. A commutation controller is configured to commutate the windings based on a commutation sequence driven by an oscillator. A rotation phase of the spindle motor is measured, and a phase error is generated based on the measured rotation phase of the spindle motor and a phase of the commutation sequence, wherein a frequency of the oscillator is adjusted based on the phase error.
摘要翻译： 公开了一种数据存储装置，包括在盘上驱动的磁头和被配置为旋转磁盘的主轴电动机，其中主轴电动机包括多个绕组。 换向控制器被配置为基于由振荡器驱动的换向序列来换向绕组。 测量主轴电动机的旋转相位，并且基于主轴电动机的测量的旋转相位和换向序列的相位产生相位误差，其中基于相位误差来调整振荡器的频率。
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公开(公告)号：US08885285B1
公开(公告)日：2014-11-11
申请号：US14033136
申请日：2013-09-20
发明人： Michael T. Nicholls , Hien T. Chu
CPC分类号： G11B19/043 , G11B19/042
摘要： Detecting an impact of an electronic device, such as a data storage device (DSD). An acceleration input is received indicating an acceleration of the electronic device and it is determined whether an acceleration change value based on the acceleration input is greater than an absolute threshold. If so, an acceleration change ratio is calculated using the acceleration change value and an average of acceleration change values. The acceleration change ratio is compared to a relative threshold and it is determined that an impact of the electronic device has been detected if the acceleration change ratio is greater than the relative threshold.
摘要翻译： 检测诸如数据存储设备（DSD）的电子设备的影响。 接收到指示电子装置的加速度的加速度输入，并且确定基于加速度输入的加速度变化值是否大于绝对阈值。 如果是，则使用加速度变化值和加速度变化值的平均值来计算加速变化率。 将加速度变化率与相对阈值进行比较，并且如果加速度变化率大于相对阈值，则确定已经检测到电子设备的影响。
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