公开(公告)号：US20200044542A1

公开(公告)日：2020-02-06

申请号：US16491664

申请日：2017-04-10

Applicant: Goertek, Inc.

Inventor： Guoyuan Wang ,  Hui Zhang ,  Youwei Tang ,  Yuanjiang Liu ,  Pengbo Feng

IPC: H02K33/18 ,  H02K33/12

Abstract: A linear vibration motor and an electronic device are provided. The motor comprises: a magnetic conductive body; a vibrator comprising a permanent magnet; and a linear movement support, wherein the vibrator is mounted on the linear movement support to move along a linear movement path delimited by the linear movement support, wherein the magnetic conductive body is provided in a direction of the linear movement path near the vibrator for interacting with the permanent magnet, such that the vibrator tends towards a balanced position in the linear movement path in a non-activated state, and wherein the magnetic conductive body is made of soft magnetic material.

公开(公告)号：US20230402949A1

公开(公告)日：2023-12-14

申请号：US18449141

申请日：2023-08-14

Applicant: GOERTEK INC.

Inventor： Yifan ZHANG ,  Pengbo Feng ,  Xueqiang Wang ,  Tao Han

IPC: H02P25/034 ,  H02P7/025

CPC classification number: H02P25/034 ,  H02P7/025

Abstract: Disclosed are a voice coil motor, a method and a device for controlling the voice coil motor. The voice coil motor includes an outer coil module and an inner coil module inside the outer coil module, an air gap for the inner coil module to move is formed between the inner coil module and the outer coil module. The method includes: driving the outer coil module to generate an outer coil electromagnetic force; determining an inner coil current instruction according to an expectation force instruction and force feedback information sent by an executing mechanism of the voice coil motor; driving the inner coil module of the voice coil motor to generate an inner coil electromagnetic force according to the inner coil current instruction; and enabling the executing mechanism to generate a motor acting force according to the outer coil electromagnetic force and the inner coil electromagnetic force.