公开(公告)号：US09933769B2

公开(公告)日：2018-04-03

申请号：US14797674

申请日：2015-07-13

Applicant: Seagate Technology LLC

Inventor： Zhiqiang Xing ,  Lou Supino

IPC: G01M1/38 ,  G05B13/00 ,  G05B15/00 ,  G05D23/00 ,  G05B19/042

CPC classification number: G05B19/042 ,  G05B2219/37435

Abstract: Apparatus and method for controlling the position of a control object using a multi-stage actuator. A multi-stage actuator is provided with first and second actuation stages adapted to position a control object. A control circuit includes a multi-tap lattice structure and parallel first and second multiple regression filters coupled to respective taps of the multi-tap lattice structure. The control circuit concurrently generates and applies first and second disturbance rejection signals to the respective first and second actuation stages to compensate a disturbance signal component in a position error signal (PES) indicative of position error of the control object.

公开(公告)号：US20170017216A1

公开(公告)日：2017-01-19

申请号：US14797674

申请日：2015-07-13

Applicant: Seagate Technology LLC

Inventor： Zhiqiang Xing ,  Lou Supino

IPC: G05B19/042

CPC classification number: G05B19/042 ,  G05B2219/37435

Abstract: Apparatus and method for controlling the position of a control object using a multi-stage actuator. In some embodiments, a multi-stage actuator is provided with first and second actuation stages adapted to position a control object. A control circuit includes a multi-tap lattice structure and parallel first and second multiple regression filters coupled to respective taps of the multi-tap lattice structure. The control circuit concurrently generates and applies first and second disturbance rejection signals to the respective first and second actuation stages to compensate a disturbance signal component in a position error signal (PES) indicative of position error of the control object.

Abstract translation: 使用多级致动器控制控制对象的位置的装置和方法。 在一些实施例中，多级致动器设置有适于定位控制对象的第一和第二致动级。 控制电路包括多抽头晶格结构以及耦合到多抽头晶格结构的相应抽头的并行的第一和第二多元回归滤波器。 控制电路同时产生并施加第一和第二干扰抑制信号到相应的第一和第二致动级，以补偿指示控制对象的位置误差的位置误差信号（PES）中的干扰信号分量。