公开(公告)号：US20020001153A1

公开(公告)日：2002-01-03

申请号：US09812715

申请日：2001-03-20

Applicant: STMicroelectronics S.r.I.

Inventor： Giuseppe Maiocchi

IPC: G11B015/46

CPC classification number: G11B19/20 ,  G11B19/28 ,  G11B21/02

Abstract: The device is for driving and controlling a rotation motor and a voice coil motor for a hard disk drive system that includes a disk and an arm carrying a read/write head to be positioned with respect thereto. A duty-cycle control loop including a current sensing circuit is connected to the voice coil motor, and an arm position control loop including a speed detection circuit is also connected to the voice coil motor. The duty-cycle control loop and the arm position control loop are digitally implemented by a DSP as a function of digital data representing a first analog signal generated by the current sensing circuit representative of current conducting in a winding of the voice coil motor, and a second analog signal generated by the speed detection circuit representative of an instant speed of the voice coil motor.

Abstract translation: 该装置用于驱动和控制用于硬盘驱动系统的旋转电动机和音圈电动机，该系统包括盘和携带读/写头相对于其定位的臂。 包括电流感测电路的占空比控制回路连接到音圈电动机，并且包括速度检测电路的臂位置控制回路也连接到音圈电动机。 占空比控制回路和臂位置控制回路由DSP作为数字数据数字地实现，该数字数据表示由代表在线圈电动机的绕组中的电流传导的电流感测电路产生的第一模拟信号，以及 由速度检测电路产生的代表音圈电机瞬时速度的第二模拟信号。