公开(公告)号：US09251824B1

公开(公告)日：2016-02-02

申请号：US14607671

申请日：2015-01-28

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Vijay Kumar ,  Narayanan Ramakrishnan

IPC: G11B21/02 ,  G11B5/55

CPC classification number: G11B20/10268 ,  G11B5/4826 ,  G11B5/483 ,  G11B5/5552 ,  G11B5/5573

Abstract: An apparatus and associated method employing a bridge circuit having first and second microactuators attached to the apparatus. An excitation source is configured to independently drive each of the microactuators. A computation module is connected to the bridge circuit and is configured to independently measure an electrical output of each microactuator. The computation module uses the electrical outputs to characterize a bimodal modulation of the apparatus.

Abstract translation: 一种使用桥接电路的装置和相关方法，该桥接电路具有连接到该装置的第一和第二微致动器。 激励源被配置为独立地驱动每个微致动器。 计算模块连接到桥式电路，并被配置为独立地测量每个微型致动器的电输出。 计算模块使用电气输出来表征装置的双模式调制。