The theory of support vector regression(SVR)is introduced
a sensor predictor based on SVR is proposed.The SVR is trained out of line and used on line.The trained SVR model is use to simulate the dynamic characteristic of coal mine gas sensor system.The implementation procedures of gas sensor fault detection and signal recovery are expounded.The simulation results show that the SVR predictor can predict and follow the output of gas sensor accurately
fault message of sensor is diagnosed in time
and sensor signal is recoved.The method is verified by the experiment to be correct and valid.