CONTROL SYSTEM FOR TAPE DRIVE TO COMPENSATE FOR SYSTEM DISTURBANCES WITHOUT USE OF FEED-FORWARD SENSOR
    1.
    发明申请
    CONTROL SYSTEM FOR TAPE DRIVE TO COMPENSATE FOR SYSTEM DISTURBANCES WITHOUT USE OF FEED-FORWARD SENSOR 有权
    用于传送系统的控制系统,用于在不使用前馈传感器的情况下补偿系统干扰

    公开(公告)号:US20130050868A1

    公开(公告)日:2013-02-28

    申请号:US13220391

    申请日:2011-08-29

    IPC分类号: G11B21/02

    CPC分类号: G11B5/584

    摘要: A tape drive (232) that receives a tape cartridge (42) having a tape (256) comprises a tape head (280) and a control system (270). The tape head (280) transfers data between the tape drive (232) and the tape (256). The control system (270) utilizes linear parameterization to control the position of the tape head (280) relative to the tape (256). The control system (270) can include a compensator (J) and a filter (Q). The compensator (J) is a combination of the information contained in a nominal control system (370A) and the information contained in a model of the servo system (370B). The model of the servo system (370B) estimates system disturbances that affect the tracking ability of the control system (270). The filter (Q) filters the estimated system disturbances to generate a filtered system disturbance signal. The filtered system disturbance signal is then used to adjust the output of the compensator (J). Additionally, the control system (270) can utilize Youla-Kucera parameterization to control the position of the tape head (280) relative to the tape (256). Further, the control system (270) controls the position of the tape head (280) relative to the tape (256) without the use of a feed-forward sensor.

    摘要翻译: 接收具有带(256)的带盒(42)的磁带驱动器(232)包括磁带头(280)和控制系统(270)。 带头(280)在磁带驱动器(232)和磁带(256)之间传送数据。 控制系统(270)利用线性参数化来控制带头(280)相对于带(256)的位置。 控制系统(270)可以包括补偿器(J)和过滤器(Q)。 补偿器(J)是包含在标称控制系统(370A)中的信息与包含在伺服系统(370B)的模型中的信息的组合。 伺服系统(370B)的模型估计了影响控制系统的跟踪能力的系统扰动(270)。 滤波器(Q)对所估计的系统干扰进行滤波以产生经滤波的系统干扰信号。 滤波后的系统干扰信号用于调整补偿器(J)的输出。 另外,控制系统(270)可以利用Youla-Kucera参数化来控制磁带头(280)相对于磁带(256)的位置。 此外,控制系统(270)不使用前馈传感器来控制带头(280)相对于带(256)的位置。

    Control system for tape drive to compensate for system disturbances without use of feed-forward sensor
    2.
    发明授权
    Control system for tape drive to compensate for system disturbances without use of feed-forward sensor 有权
    用于磁带机的控制系统,以补偿系统干扰而不使用前馈传感器

    公开(公告)号:US08699174B2

    公开(公告)日:2014-04-15

    申请号:US13220391

    申请日:2011-08-29

    IPC分类号: G11B5/584

    CPC分类号: G11B5/584

    摘要: A tape drive (232) that receives a tape cartridge (42) having a tape (256) comprises a tape head (280) and a control system (270). The tape head (280) transfers data between the tape drive (232) and the tape (256). The control system (270) utilizes linear parameterization to control the position of the tape head (280) relative to the tape (256). The control system (270) can include a compensator (J) and a filter (Q). The compensator (J) is a combination of the information contained in a nominal control system (370A) and the information contained in a model of the servo system (370B). The model of the servo system (370B) estimates system disturbances that affect the tracking ability of the control system (270). The filter (Q) filters the estimated system disturbances to generate a filtered system disturbance signal. The filtered system disturbance signal is then used to adjust the output of the compensator (J). Additionally, the control system (270) can utilize Youla-Kucera parameterization to control the position of the tape head (280) relative to the tape (256). Further, the control system (270) controls the position of the tape head (280) relative to the tape (256) without the use of a feed-forward sensor.

    摘要翻译: 接收具有带(256)的带盒(42)的磁带驱动器(232)包括磁带头(280)和控制系统(270)。 带头(280)在磁带驱动器(232)和磁带(256)之间传送数据。 控制系统(270)利用线性参数化来控制带头(280)相对于带(256)的位置。 控制系统(270)可以包括补偿器(J)和过滤器(Q)。 补偿器(J)是包含在标称控制系统(370A)中的信息与包含在伺服系统(370B)的模型中的信息的组合。 伺服系统(370B)的模型估计了影响控制系统的跟踪能力的系统扰动(270)。 滤波器(Q)对所估计的系统干扰进行滤波以产生经滤波的系统干扰信号。 滤波后的系统干扰信号用于调整补偿器(J)的输出。 另外,控制系统(270)可以利用Youla-Kucera参数化来控制磁带头(280)相对于磁带(256)的位置。 此外,控制系统(270)不使用前馈传感器来控制带头(280)相对于带(256)的位置。

    ASSURING STABILITY OF THE SPEED OF A COOLING FAN IN A COMPUTER SYSTEM
    3.
    发明申请
    ASSURING STABILITY OF THE SPEED OF A COOLING FAN IN A COMPUTER SYSTEM 审中-公开
    确保计算机系统中冷却风扇速度的稳定性

    公开(公告)号:US20090271049A1

    公开(公告)日:2009-10-29

    申请号:US12109561

    申请日:2008-04-25

    IPC分类号: G05D23/19 G06F1/20 G06N5/02

    CPC分类号: G06F1/206 G05D23/1917

    摘要: Some embodiments of the present invention provide a system that assures stability of the speed of a cooling fan in a computer system. During operation, a temperature of the computer system, an ambient temperature, and a current fan speed for the cooling fan are monitored. Next, a validated ambient temperature based on parameters including the temperature of the computer system, the ambient temperature, and the current fan speed is computed. Then, a control signal is generated in response to the validated ambient temperature, and the control signal is sent to the cooling fan to assure stability of the fan speed of the cooling fan.

    摘要翻译: 本发明的一些实施例提供一种确保计算机系统中的冷却风扇的速度的稳定性的系统。 在运行期间,监视计算机系统的温度,环境温度和冷却风扇的当前风扇速度。 接下来,计算基于包括计算机系统的温度,环境温度和当前风扇速度的参数的验证的环境温度。 然后,响应于经验证的环境温度产生控制信号,并且将控制信号发送到冷却风扇,以确保冷却风扇的风扇速度的稳定性。

    METHOD AND APPARATUS FOR ATTENUATING FAN NOISE THROUGH TURBULENCE MITIGATION
    5.
    发明申请
    METHOD AND APPARATUS FOR ATTENUATING FAN NOISE THROUGH TURBULENCE MITIGATION 有权
    通过湍流减轻来衰减风扇噪声的方法和装置

    公开(公告)号:US20090180635A1

    公开(公告)日:2009-07-16

    申请号:US11972043

    申请日:2008-01-10

    IPC分类号: G10K11/178 H05K7/20

    摘要: Some embodiments of the present invention provide a system that attenuates noise from a fan exhaust of a computer system. During operation, the system monitors the noise from the fan exhaust and calculates a frequency spectrum of the noise from the monitored noise. Next, the system generates an antiphase spectrum from the frequency spectrum and generates a flow of air which exhibits a property of the antiphase spectrum. Finally, the system directs the flow of air into the fan exhaust so that the noise is attenuated by a reduction of turbulence in the fan exhaust by the flow of air.

    摘要翻译: 本发明的一些实施例提供一种衰减来自计算机系统的风扇排气的噪声的系统。 在运行过程中,系统监视风扇排气噪声,并根据监测到的噪声计算噪声的频谱。 接下来,系统从频谱产生反相光谱,并产生具有反相光谱性质的空气流。 最后,系统将空气流引导到风扇排气中,以便通过空气流动减少风扇排气中的湍流,使噪音减弱。

    Method and apparatus for attenuating fan noise through turbulence mitigation
    6.
    发明授权
    Method and apparatus for attenuating fan noise through turbulence mitigation 有权
    通过湍流减轻来衰减风扇噪声的方法和装置

    公开(公告)号:US08155332B2

    公开(公告)日:2012-04-10

    申请号:US11972043

    申请日:2008-01-10

    IPC分类号: G10K11/16 F01N1/06 F01N1/00

    摘要: Some embodiments of the present invention provide a system that attenuates noise from a fan exhaust of a computer system. During operation, the system monitors the noise from the fan exhaust and calculates a frequency spectrum of the noise from the monitored noise. Next, the system generates an antiphase spectrum from the frequency spectrum and generates a flow of air which exhibits a property of the antiphase spectrum. Finally, the system directs the flow of air into the fan exhaust so that the noise is attenuated by a reduction of turbulence in the fan exhaust by the flow of air.

    摘要翻译: 本发明的一些实施例提供一种衰减来自计算机系统的风扇排气的噪声的系统。 在运行过程中,系统监视风扇排气噪声,并根据监测到的噪声计算噪声的频谱。 接下来,系统从频谱产生反相光谱,并产生具有反相光谱性质的空气流。 最后,系统将空气流引导到风扇排气中,以便通过空气流动减少风扇排气中的湍流,使噪音减弱。

    SURFACE SHAPE METRIC AND METHOD TO QUANTIFY THE SURFACE SHAPE OF ELECTRONIC PACKAGES
    7.
    发明申请
    SURFACE SHAPE METRIC AND METHOD TO QUANTIFY THE SURFACE SHAPE OF ELECTRONIC PACKAGES 有权
    表面形状公制和电子包装表面形状定量方法

    公开(公告)号:US20090228237A1

    公开(公告)日:2009-09-10

    申请号:US12045418

    申请日:2008-03-10

    IPC分类号: G01B5/06

    CPC分类号: G01B21/30

    摘要: A method for quantifying a shape of a surface comprising: measuring an elevation (z) of the surface at a plurality of locations in an x-y plane of the surface comprising measurement data; performing a fit of the measurement data to a series expansion in terms of one or more base functions comprising a series expansion fit; calculating a vector of shape coefficients from the series expansion fit; and outputting the vector of shape coefficients.

    摘要翻译: 一种用于量化表面形状的方法,包括:测量包括测量数据的表面的x-y平面中的多个位置处的表面的高度(z); 根据包括串联扩展配合的一个或多个基本功能,对测量数据进行串联扩展的拟合; 从系列扩展拟合计算形状系数的向量; 并输出形状系数的矢量。