HAPTIC ACTUATOR INCLUDING MOVABLE COIL AND CIRCUITRY FOR GENERATING DRIVE WAVEFORMS BASED UPON A BEAT FREQUENCY AND RELATED METHODS

摘要

A haptic actuator may include a housing, at least one permanent magnet carried by the housing, and a field member movable within the housing and comprising at least one coil cooperating with the at least one permanent magnet. The housing, at least one coil, and field member may define a resonant frequency. The haptic actuator may also include drive circuitry coupled to the at least one coil and being capable of generating first and second drive waveforms having respective different frequencies spaced about the resonant frequency to drive the field member at a beat frequency lower than the resonant frequency.

主权项

1. A haptic actuator comprising:
a housing; at least one permanent magnet carried by the housing; a field member movable within the housing and comprising at least one coil cooperating with the at least one permanent magnet; the housing, at least one coil, and field member defining a resonant frequency; and drive circuitry coupled to the at least one coil and being capable of generating first and second drive waveforms having respective different frequencies spaced about the resonant frequency to drive the field member at a beat frequency lower than the resonant frequency.