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ACTUATOR DRIVER CIRCUIT WITH SELF-RESONANCE TRACKING
ACTUATOR DRIVER CIRCUIT WITH SELF-RESONANCE TRACKING
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机译:具有自谐振跟踪的执行器驱动器电路
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摘要
Certain aspects of the present disclosure generally relate to methods and apparatus for driving haptic actuators. An example actuator driver circuit generally includes a driver and calibration circuitry. The driver has at least one output for coupling to at least one input of an actuator. The calibration circuitry is configured to: detect a phase of a voltage signal at the at least one output of the driver, detect a phase of a current signal at the at least one output of the driver, determine a phase difference between the phase of the voltage signal and the phase of the current signal, and adjust a frequency of an oscillating signal for the driver, based at least in part on the phase difference.
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