Design of Angular Estimator of Inertial Sensor Using the Least Square Method

Since MEMS gyro sensors measure not angle of rotation but angular rate, an estimator is designed to estimate the angles in many applications. Gyro and accelerometer are used to improve estimating accuracy of the angle. This paper presents a method of finding filter coefficients of the well-known estimator which is to get rotation angles from gyro and accelerometer data. In order to verify the performance of our method, the estimated angle is compared with the encoder output in a rotary pendulum system.

• Ji Hoon Kim
• Hyung Gi Min
• Jae Dong Cho
• Jae Hoon Jang
• Sung-Ha Kwon
• Eun Tae Jeung

• gyro
• accelerometer
• estimator
• least square.

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