Haptic communication system using cutaneous actuators for simulation of continuous human touch
摘要
說明書
The auxiliary actuators 904A, 904B generates counter-vibrations to localize the vibrations of the main cutaneous actuator 902. The counter-vibrations has an opposite phase (i.e., 180 degrees out of phase at the locations of the auxiliary actuator 904A and 904B) relative to the vibrations generated by main cutaneous actuator 902. Curves 910A, 910B illustrate the propagation of the counter-vibrations along x-direction. The auxiliary actuators 904A, 904B may be smaller than the main cutaneous actuator 902.
When the vibrations of the main cutaneous actuator 902 and the counter-vibrations of interact, destructive interference occurs between the vibrations and the counter-vibrations. The combined vibrations as a result of the interference, as shown by curve 914 in zone 2, has decreased range of vibrations and a peak amplitude relative to main vibrations (shown as curve 908). Although the counter-vibrations as shown by curves 912A, 912B tend to propagate along a further distance in zones 1 and 3 due to constructive interference with the vibrations of the main cutaneous actuator 902, the amplitude of the counter-vibrations may at a lower than a sensory threshold of the receiving user. Therefore, the counter-vibrations from the auxiliary actuators 904A, 904B localize the main vibrations of the main cutaneous actuator 902, and increase the spatial resolution of haptic communication. Moreover, other mechanisms such as providing damper or making the substrate 906 thicker in areas beyond zone 2 may be used in conjunction to reduce the propagation of the counter-vibrations.
