Control and evaluation of a 2 D multimodal controlled friction display
The multimodal control of a 2D controlled Friction Device is presented. We use the Vector control method because the phase and amplitude of two vibration modes at a same frequency can be precisely set. The closed loop response time of 10 ms is achieved. The device is then associated with a finger position sensor. The algorithm of the multimodal approach is then tested. In spite of the inevitable limitations of the system saturation of amplifiers, low sampling frequency of the sensor low friction could be imposed under a finger while a high friction was imposed on a pre determined position. This confirms the validity of the modal approach to create multi touch interactions.
2017 IEEE World Haptics Conference (WHC)