- 专利标题： Low-latency impedance estimation for controlling a reluctance motor
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申请号： US17033578申请日： 2020-09-25
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公开(公告)号： US11522483B2公开(公告)日： 2022-12-06
- 发明人: Denis G. Chen , Juil Lee , Hari Vasudevan , Riccardo Tarelli , Darya Amin-Shahidi
- 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： H02P25/092
- IPC分类号： H02P25/092 ; H02P25/086 ; G06F3/01
摘要：
A haptic system includes a haptic engine in which a reluctance motor is driven by a driver controller operated in conjunction with an impedance-estimator that uses amplitude-modulated calibration signals. An enveloped-calibration signal is superimposed on a haptic-drive signal to quickly, and accurately, estimate the driving coil's impedance, while minimizing power penalty.
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