Thin haptic actuator operates at up to 200Hz
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By
Rich Pell
PiezoHapt has a unimorph design consisting of a multilayer piezo element bonded to one side of a vibration plate. Much thinner than conventional eccentric rotary motors and linear resonant actuators, the device can be driven with low voltages under 24V and can produce a wide variety of vibration patterns, depending on the amplitude and frequency of the voltage applied.
The PHUA8060-35A-33-000 type has a footprint of 80x60mm (vibration plate). At a frequency of 200Hz (sine-wave) and a voltage of 24V peak, the component offers a typical displacement of 55µm. PiezoHapt is suitable for providing haptic feedback to user actions in the displays of smartphones and tablets.
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