- 专利标题： Haptic actuator having a double-wound driving coil for temperature-independent velocity sensing
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申请号： US16900591申请日： 2020-06-12
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公开(公告)号： US11496034B2公开(公告)日： 2022-11-08
- 发明人: Riccardo Tarelli , Yumeng Liu
- 申请人： Apple Inc.
- 申请人地址： US CA Cupertino
- 专利权人： Apple Inc.
- 当前专利权人： Apple Inc.
- 当前专利权人地址： US CA Cupertino
- 代理机构： Fish & Richardson P.C.
- 主分类号： H02K33/12
- IPC分类号： H02K33/12 ; H02P7/02 ; H02P23/14 ; H02P25/032 ; H02P25/22 ; B06B1/04
摘要：
A haptic engine includes a linear resonant actuator having a double-wound driving coil which is used for sensing a back electromotive force (EMF) voltage independently of the coil resistance, thus minimizing the back EMF voltage's sensitivity to temperature.