Abstract
In this research, a small six-axis seismic sensor equipped with a MEMS acceleration & gyro sensor is developed and an estimation method for the maximum interlaminar deformation angle of a structure is studied. The attitude angle can be estimated by integrating the angular velocity measured by the gyro sensor. However, in general the estimated attitude fluctuates due to the bias error. In this paper, the method which estimates the attitude as correcting the bias error of the angular velocity by using the Kalman filter is studied. In this method, the bias error is estimated to fit the attitude with the output of the acceleration sensor. To verify the precision of this method, a single-axis vibration test is conducted. And, the precision of attitude angle is investigated in case that the acceleration data is contaminated by seismic motions.
