公开(公告)号：US20040036999A1

公开(公告)日：2004-02-26

申请号：US10464435

申请日：2003-06-16

Applicant: STMicroelectronics S.r.I.

Inventor： Francesco Chrappan Soldavini ,  Roberto Oboe ,  Paolo Capretta

IPC: G11B005/596 ,  G11B021/02

CPC classification number: H02P25/034

Abstract: A method of driving an electrical load having a complex electrical impedance, such as a voice-coil motor controlling the position of a read/write head in a data storage disk drive system, comprises providing a voltage-mode driver generating drive signals for the electrical load in response to drive commands. Compensated commands for the voltage-mode driver are generated filtering the drive commands, compensating for a phase shift between electrical quantities delivered to the electrical load. The voltage-mode drive thus emulates a conventional, but more expensive, current-mode drive. In a preferred embodiment, the method comprises estimating characteristic parameters of the electrical load during the operation, and adapting the filtering to the estimated characteristic parameters. The estimation comprises implementing a Kalman filtering algorithm, particularly an extended Kalman filtering.

Abstract translation: 驱动具有复电阻抗的电负载的方法，例如控制数据存储盘驱动系统中读/写头位置的音圈电机，包括提供电压模式驱动器，产生用于电 响应驱动命令加载。 产生用于电压模式驱动器的补偿命令，对驱动命令进行滤波，补偿传送到电负载的电量之间的相移。 因此，电压模式驱动器模拟常规但是更昂贵的电流模式驱动器。 在优选实施例中，该方法包括估计操作期间的电负载的特征参数，以及使滤波适应估计的特征参数。 估计包括实现卡尔曼滤波算法，特别是扩展卡尔曼滤波。

公开(公告)号：US20030058024A1

公开(公告)日：2003-03-27

申请号：US10216562

申请日：2002-08-09

Applicant: STMicroelectronics S.r.I.

Inventor： Maurizio Zuffada ,  Giorgio Betti ,  Francesco Chrappan Soldavini ,  Martin Aureliano Hassner

IPC: G06F001/00

CPC classification number: H03H11/481

Abstract: An integrated electronic circuit includes a plurality of active circuits connected together in cascade. A feedback loop is between an output of a last active circuit and an input of a first active circuit so that the plurality of active devices function as a non-linear device, such as a capacitor. The integrated electronic circuit may be integrated or used in association with a circuit network including other non-linear devices.

Abstract translation: 集成电子电路包括级联连接在一起的多个有源电路。 反馈回路在最后一个有效电路的输出和第一有源电路的输入之间，使得多个有源器件用作诸如电容器之类的非线性器件。 集成电子电路可以与包括其他非线性装置的电路网络相关联地集成或使用。