Automatic calibration method of zero value of MEMS gyroscope

The invention discloses an automatic calibration method of a zero value of an MEMS gyroscope, comprising the following steps: S1, storing the zero value of the MEMS gyroscope collected when the gyroscope is determined to be in a stationary state into a nonvolatile memory before delivery; and S2, after delivery of the MEMS gyroscope, collecting the output voltage of the gyroscope multiple times when the gyroscope is started for operation, judging whether the MEMS gyroscope is in the stationary state: if the MEMS gyroscope is in the stationary state, taking the arithmetical mean value of all the output voltage as the zero value of the gyroscope and storing the zero value into the nonvolatile memory; and if not, calling data in the nonvolatile memory as the zero value of the gyroscope. The automatic calibration method can collect the output voltage of the MEMS gyroscope in real time, and reflect the influences of power supply voltage and environment temperature in the zero value in real time, thereby improving t