Owing to the limit of test principle, sense element noise, dimension coupling interference, and acquiring circuit noise, there exits serious noise in the robot tactile sensor signal, which causes the rough binary realization of the tactile sensor signal. In this paper, stochastic resonance phenomenon exits in nonlinear system is firstly used for optimizing the process of binary realization of the robot tactile sensor signal, in order to reduce the noise level of binary tactile signal. At last, the experimen...