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1. 发明授权

US07589484B2 Closed loop acceleration control for a data storage device motor 有权
标题翻译：数据存储设备电机的闭环加速控制
公开(公告)号：US07589484B2
公开(公告)日：2009-09-15
申请号：US10455134
申请日：2003-06-05
申请人： Raye Abdoulie Sosseh , James Wilford DuLaney , Ryan Todd Lyle
发明人： Raye Abdoulie Sosseh , James Wilford DuLaney , Ryan Todd Lyle
IPC分类号： H02P1/00
CPC分类号： H02P6/182 , G11B19/28 , H02P6/20
摘要： Method and apparatus for accelerating a multi-phase motor having a rotatable rotor are disclosed. A first commutation state in which the rotor resides is identified, after which a Proportional, Integral and Derivative (PID) control routine is executed for closed loop control of an acceleration of the rotor from a stopped position to an intermediate velocity, after which back electromotive force (Bemf) commutation is used to control the motor. The PID control routine utilizes a loop gain value optimized through voltage feedback indicative of a response of windings of the rotor to an application of a drive current across the windings. Based on the voltage feedback a controller programmed with the PID control routine provides an updated commanded current for each successive commutation state of the motor for use by a motor driver circuitry, which drives the motor through each commutation state until attainment of the intermediate velocity.
摘要翻译：公开了一种用于加速具有可旋转转子的多相电动机的方法和装置。识别转子所在的第一换向状态，之后执行比例积分和微分（PID）控制程序，用于闭环控制转子从停止位置到中间速度的加速度，之后反电动势力（Bemf）换向用于控制电机。 PID控制程序利用通过电压反馈优化的环路增益值，该电压反馈指示转子绕组对跨绕组施加驱动电流的响应。基于电压反馈，用PID控制程序编程的控制器为马达的每个连续换向状态提供更新的指令电流，以供马达驱动器电路使用，马达驱动器电路通过每个换向状态驱动马达直到达到中间速度。

2. 发明授权

US07031100B2 Motor torque constant variation compensation 失效
标题翻译：电机转矩恒定变化补偿
公开(公告)号：US07031100B2
公开(公告)日：2006-04-18
申请号：US10323130
申请日：2002-12-18
申请人： Jeffrey D. Andress , Philip R. Woods , Ryan Todd Lyle
发明人： Jeffrey D. Andress , Philip R. Woods , Ryan Todd Lyle
IPC分类号： G11B5/596
CPC分类号： G11B5/5521
摘要： Method and apparatus for compensating for a decrease in the torque constant of an actuator motor in a data storage device. An actuator supports the head adjacent a data recording surface on which a plurality of tracks are defined. A servo circuit outputs current to the actuator motor to carry out a seek to move the head from an initial track to a destination track in accordance with a velocity profile having a nominal deceleration trajectory along which the head is decelerated to reach the destination track. The servo circuit operates to adjust an initial value of gain to a second value in response to a selected parameter, and scales the nominal deceleration trajectory to a derated deceleration trajectory in relation to the second value of the gain. The derated deceleration trajectory is preferably selected in relation to the difference between the second value of gain and a predetermined threshold.
摘要翻译：用于补偿数据存储装置中的致动器电动机的转矩常数降低的方法和装置。执行器支持与其上定义多个轨道的数据记录表面相邻的头部。伺服电路将电流输出到致动器电动机，以根据具有标称减速轨迹的速度分布，将磁头从初始轨道移动到目标磁道，以使磁头减速到达目标磁道。伺服电路用于响应于所选择的参数来将增益的初始值调整到第二值，并将标称减速轨迹相对于增益的第二值进行缩放减速轨迹。优选地，相对于增益的第二值与预定阈值之间的差异来选择降额减速轨迹。

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