公开(公告)号：US10601355B2

公开(公告)日：2020-03-24

申请号：US16147434

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Hari Vasudevan ,  Eileen A. Mazzochette ,  Arman Hajati ,  Shingo Yoneoka

IPC: H02K33/00 ,  H02P25/034 ,  H02P23/12 ,  H02P23/14 ,  G06F3/01 ,  H02K29/12 ,  H02K33/18 ,  H02K29/08 ,  H02P29/60

Abstract: A system for providing closed-loop control of a linear resonant actuator using Back Electromotive Force (EMF) and inertial compensation is disclosed. In an embodiment, one or more inertial sensors are used to estimate low frequency motion of a haptic engine moving mass and compensate for the motion using a feedforward model, thus providing a more robust closed-loop control system for controlling the moving mass when subjected to low frequency disturbances by a user, for example, shaking or swinging the device.

公开(公告)号：US20190103829A1

公开(公告)日：2019-04-04

申请号：US16147434

申请日：2018-09-28

Applicant: Apple Inc.

Inventor： Hari Vasudevan ,  Eileen A. Mazzochette ,  Arman Hajati ,  Shingo Yoneoka

IPC: H02P25/034 ,  H02P23/12 ,  H02P23/14 ,  H02K29/08 ,  H02K29/12 ,  H02K33/18 ,  G06F3/01

Abstract: A system for providing closed-loop control of a linear resonant actuator using Back Electromotive Force (EMF) and inertial compensation is disclosed. In an embodiment, one or more inertial sensors are used to estimate low frequency motion of a haptic engine moving mass and compensate for the motion using a feedforward model, thus providing a more robust closed-loop control system for controlling the moving mass when subjected to low frequency disturbances by a user, for example, shaking or swinging the device.