Piezoelectric actuator for a force-feedback application: Preliminary evaluation

As a solution to the lack of compactness and simplicity often encountered in haptic interfaces, we propose a device based on friction coefficient control principle. This device includes polarised piezoceramics well adjusted and glued to a 64x38x3 mm copper-beryllium plate supported by four legs. Then, properly energised around a resonant frequency, with legs at antinodes, a stationary wave is created in the plate. Variable friction forces between the legs and the plane substrate are created by the control of the wave amplitude, according to electro-active lubrication. So the user obtains force feedback by holding the plate, and moving it on a plane substrate, as he could do with a mouse interface. Preliminary psychophysical evaluation trends to assess the validity of the device as a force feedback interface.

[1]  J. Edward Colgate,et al.  T-PaD: Tactile Pattern Display through Variable Friction Reduction , 2007, Second Joint EuroHaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems (WHC'07).

[2]  Toshio Watanabe,et al.  A method for controlling tactile sensation of surface roughness using ultrasonic vibration , 1995, Proceedings of 1995 IEEE International Conference on Robotics and Automation.

[3]  Manabu Aoyagi,et al.  Hybrid Ultrasonic Actuator for Force-Feedback Interface , 2008 .

[4]  Fei Wang,et al.  Generic and systematic evaluation of haptic interfaces based on testbeds , 2007, 2007 IEEE/RSJ International Conference on Intelligent Robots and Systems.

[5]  C. Desai,et al.  Cyclic Testing and Modeling of Interfaces , 1985 .

[6]  Frédéric Giraud,et al.  Modelling and identification of a planar standing wave ultrasonic motor: Identification of a planar actuator , 2006 .

[7]  Vincent Hayward,et al.  Force can overcome object geometry in the perception of shape through active touch , 2001, Nature.

[9]  Susumu Tachi,et al.  Surface Acoustic Wave Tactile Display , 2001, IEEE Computer Graphics and Applications.

[10]  Frédéric Giraud,et al.  Discrimination of Virtual Square Gratings by Dynamic Touch on Friction Based Tactile Displays , 2008, 2008 Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems.

[11]  Patrice Le Moal,et al.  Mechanical energy transductions in standing wave ultrasonic motors: Analytical modelling and experimental investigations , 2000 .