Abstract
Mobile haptic devices that employ vibration have been studied extensively because they have great potential for use as information transfer devices. Some studies have reported a method for haptic feedback using asymmetric oscillation made by slider-crank mechanism. Authors have proposed a small two-degree-of-freedom (2-DOF) oscillatory actuator for a mobile haptic device. However, the continuous operating time was estimated to be only few hours because its power consumption is large. To solve this problem, this paper proposes a power-saving method of the 2-DOF oscillatory actuator using mechanical resonance. As a result, the proposed method improved by more than 99% in the power consumption.
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