Volume 4 Issue 6
Dec.  2011
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LIN Min-xu, WANG Yong-yang, DAI Ming, QIAO Yan-feng. Application of linear accelerometer to Kalman filter for piezoelectric gyro[J]. Chinese Optics, 2011, 4(6): 600-605.
Citation: LIN Min-xu, WANG Yong-yang, DAI Ming, QIAO Yan-feng. Application of linear accelerometer to Kalman filter for piezoelectric gyro[J]. Chinese Optics, 2011, 4(6): 600-605.

Application of linear accelerometer to Kalman filter for piezoelectric gyro

  • Received Date: 15 Sep 2011
  • Rev Recd Date: 23 Nov 2011
  • Publish Date: 25 Dec 2011
  • As for the larger random walk noise of a piezoelectric gyro in the stabilized platform, the Kalman filtering technology based on a linear accelerometer is proposed to perform the signal filtering. Based on Kalman filtering theory, the observation equation of an angle rate for the piezoelectric gyro is established, and the linear accelerometer is used to measure the inertial angle accelaration of the platform. Then, the signal filtering of piezoelectric gyro is achieved. Experimental results show that the random walk noise level is reduced from 0.005()s-1/ Hz to 0.001 25()s-1/ Hz by using linear accelerometers and without affecting the bandwidth of piezoelectric gyro, which improves the stability precision of the optoelectronic platform.

     

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