Digital PLL filter and VCO for use in controlling a spindle motor of a mass data storage device

发明授权

US06380703B1 Digital PLL filter and VCO for use in controlling a spindle motor of a mass data storage device 有权

标题翻译：数字PLL滤波器和VCO，用于控制大容量数据存储设备的主轴电机

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专利标题： Digital PLL filter and VCO for use in controlling a spindle motor of a mass data storage device
专利标题（中）： 数字PLL滤波器和VCO，用于控制大容量数据存储设备的主轴电机
申请号： US09681308

申请日： 2001-03-15
公开(公告)号： US06380703B1

公开(公告)日： 2002-04-30
发明人: Bertram J. White
申请人： Bertram J. White
主分类号： H02P118
IPC分类号： H02P118

Digital PLL filter and VCO for use in controlling a spindle motor of a mass data storage device

摘要：

A circuit for providing commutation control signals to a commutator for a polyphase brushless dc motor in a mass data storage device includes an accumulator (48) to accumulate a digital count that is proportional or related to a phase difference between the commutation control signals and a motor bemf. A digital variable frequency oscillator (52) generates an oscillator output signal of frequency proportional to the digital count to reset the accumulator (68) after a predetermined time determined by the frequency. The circuit may also include a digital filter (50) between the digital accumulator (48) and the digital variable frequency oscillator (52) to generate a magnitude signal (DRC) of magnitude proportional to the accumulated count for delivery to the variable frequency oscillator (52) to control the frequency thereof.

摘要（中）：

用于向大容量数据存储装置中的多相无刷直流电动机的换向器提供换向控制信号的电路包括累加器（48），用于累积与换向控制信号和电动机之间的相位差成比例或相关的数字计数 bemf。数字可变频率振荡器（52）产生与数字计数成比例的频率的振荡器输出信号，以在由频率确定的预定时间之后复位累加器（68）。电路还可以包括在数字累加器（48）和数字可变频率振荡器（52）之间的数字滤波器（50），以产生与用于传送到可变频率振荡器的累积计数成比例的幅度信号（DRC） 52）来控制其频率。

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