Attitude Estimation Based on Modified Two-stage EKF
Peinan Wang, Zhiqiang Wang, Qing Zhu
Available Online March 2017.
- https://doi.org/10.2991/msam-17.2017.30How to use a DOI?
- extended kalman filter; motion capture; attitude estimation
- In this paper, an attitude estimation algorithm based on modified two-stage Extended Kalman Filter (EKF) is presented to improve the accuracy of attitude estimation based on Micro Electro-Mechanical System (MEMS) motion capture technology. Firstly, a two-stage EKF is presented to replace the conventional EKF, to reduce the computational complexity and computing time. Secondly, the normalized quaternion model is applied instead of Euler Angle model to reduce the calculation error of attitude estimation. Finally, the automatic error compensation realized through constructing the acceleration error covariance operator to adjust error covariance matrix according to the measurement values of the acceleration. The experiment result shows that the proposed method can significantly reduce the computational complexity and the size of universal joint deadlocks and linear acceleration effect on the attitude estimation.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Peinan Wang AU - Zhiqiang Wang AU - Qing Zhu PY - 2017/03 DA - 2017/03 TI - Attitude Estimation Based on Modified Two-stage EKF BT - 2017 2nd International Conference on Modelling, Simulation and Applied Mathematics (MSAM2017) PB - Atlantis Press SP - 134 EP - 138 SN - 1951-6851 UR - https://doi.org/10.2991/msam-17.2017.30 DO - https://doi.org/10.2991/msam-17.2017.30 ID - Wang2017/03 ER -