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    • 12. 发明授权
    • Data storage device, motor control device, and motor control method
    • 数据存储装置,电机控制装置和电机控制方法
    • US07253581B2
    • 2007-08-07
    • US11031746
    • 2005-01-06
    • Nobuhisa KoideYukiko HayashiShougo ShimadaGaku Ikedo
    • Nobuhisa KoideYukiko HayashiShougo ShimadaGaku Ikedo
    • G05F1/10
    • G11B19/20G11B19/2054H02P6/182
    • Embodiments of the invention provide a way to accurately detect the position of a spindle motor. In a spindle motor startup process according to one embodiment, a parameter setup section acquires from a parameter table a sense time value corresponding to an input voltage that is acquired from an ADC. The parameter setup section sets the sense time value in a register. A position determination section, which is within an SPM driver, performs an induced voltage detection process for rotor position detection purposes during the time corresponding to the sense time value that is set in the register. Even when the input voltage is decreased, rotor position detection can be properly achieved by changing the sense time value in accordance with a change in the input voltage.
    • 本发明的实施例提供了一种精确检测主轴电动机的位置的方法。 在根据一个实施例的主轴电机启动过程中,参数设置部分从参数表中获取与从ADC获取的输入电压相对应的感测时间值。 参数设置部分设置寄存器中的检测时间值。 位于SPM驱动器内的位置确定部,在对应于在寄存器中设定的感测时间值的时间内,对转子位置检测目的进行感应电压检测处理。 即使当输入电压降低时,也可以根据输入电压的变化改变感测时间值来适当地实现转子位置检测。
    • 16. 发明授权
    • Sheet-like electric heater and a sheet-like thermal sensing element
using carbon fiber mixed paper
    • 片状电加热器和使用碳纤维混合纸的片状热敏元件
    • US5582757A
    • 1996-12-10
    • US210400
    • 1994-03-18
    • Koichiro KioYukiko Hayashi
    • Koichiro KioYukiko Hayashi
    • G01K7/16H01C7/04H05B3/00H05B3/14H05B3/20H05B3/36H05B3/10
    • H05B3/36H05B1/0227H05B3/145H05B2203/011H05B2203/017H05B2203/035
    • A sheet-like thermal sensing element includes a carbon fiber mixed paper and resin layers laminated on both surfaces of the carbon fiber mixed paper. Electrodes are provided along opposite two sides of the carbon fiber mixed paper. A temperature change can be detected by detecting the change of resistance value of the carbon fiber mixed paper. A sheet-like heater is also disclosed, the heater including a pair of carbon fiber mixed papers separated by an insulating sheet and surrounded by resin. Each of the carbon fiber mixed papers include electrodes thereon. The sheet like heater can both generate heat and detect temperature change for precise heating control. Also disclosed is a method of making both the sheet-like heater and sheet-like thermal sensing element involving producing the carbon fiber mixed paper, electrode formation, laminating the mixed papers together and resin encapsulation.
    • 片状热敏元件包括碳纤维混合纸和层压在碳纤维混合纸的两个表面上的树脂层。 电极沿着碳纤维混合纸的相对两侧设置。 可以通过检测碳纤维混合纸的电阻值的变化来检测温度变化。 还公开了一种片状加热器,加热器包括由绝缘片分隔并被树脂包围的一对碳纤维混合纸。 每个碳纤维混合纸包括电极。 片状加热器可以产生热量并检测温度变化,以进行精确的加热控制。 还公开了制造片状加热器和片状热敏元件的方法,包括制造碳纤维混合纸,电极形成,将混合纸层压在一起并进行树脂封装。