Sensor information fusion method

The invention discloses a sensor information fusion method which comprises the following steps of: acquiring differential signals outputted by a first plate type displacement sensor and a second plate type displacement sensor, taking the differential signals as input signals of a differential amplifier to obtain first linear displacement signals, acquiring the first linear displacement signals by using an analog-to-digital conversion circuit, obtaining a first linear displacement sensor digital signal; using a resolver decoding chip for analyzing a resolver signal outputted by a resolver to obtain a motor rotating speed digital signal, and using an integrator for integrating the motor rotating speed digital signal to obtain a motor rotating speed integral signal; and obtaining a second linear displacement digital signal according to the motor rotating speed integral signal and the first linear displacement sensor digital signal. According to the method, the power supply mode of a dual-redundancy linear displa