Linear resonant motor driving device and method

A linear resonant actuator driving apparatus, comprising:

• a detection module, an electromotive force calculation module, a phase calculation module, a signal processing module, an amplitude calculation module, and a drive circuit;
• wherein
• an input end of the electromotive force calculation module is connected to the detection module, an output end of the electromotive force calculation module is connected to an input end of the phase calculation module, an input end of the signal processing module is connected to an output end of the phase calculation module, an input end of the amplitude calculation module is connected to the output end of the electromotive force calculation module, an output end of the amplitude calculation module is connected to the input end of the signal processing module, an input end of the drive circuit is connected to an output end of the signal processing module, and an output end of the drive circuit is connected to an actuator;
• wherein
• the electromotive force calculation module is configured to calculate a back electromotive force of the actuator based on a detection result from the detection module, the signal processing module is configured to adjust a drive signal of the actuator based on output results from the amplitude calculation module and the phase calculation module, and the drive circuit is configured to drive the actuator based on an adjusted actuator drive signal.