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International Conference on Mechanical Engineering and Technology (ICMET-London 2011)

Garry Lee
Garry Lee
Information Engineering Research Institute
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ASME Press
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In this study, a structure of a thin and flexible tactile sensor using pressure conductive rubber is presented. The sensor can cover specific three-dimensional surface, has a total of 36 elements and can measure the pressure in the range 0-600 kPa, approximately. In order to compare the performance of the voltage feedback methods and the zero potential method, which presented in the literature are applied to weaken the crosstalk effect in a resistive array, some simple circuits are structured based on these methods, respectively. Then the effect of some circuit parameters on measurement errors of each circuit is simulated and analyzed and the performance of the circuits to weaken the crosstalk effect is compared. According to the simulation results, the performance of the circuit based on the voltage feedback non-scanned-sampling-electrode method is the best than any others. Therefore, a tactile signal acquiring and processing circuit based on this method is design. At last, experimental results that the crosstalk affects the measurement errors of this circuit are given.

Deign of The Tactile Sensor
Scanning Method
Tactile Signal Acquiring Circuit
Experimental Results and Discussion
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