Visual-inertial-actuator odometry for multirotor UAVs with rotor drag and external disturbance
International Journal of Dynamics and Control(2024)
摘要
urate knowledge of an unmanned aerial vehicle’s (UAV) state and external forces is crucial for motion control. One method to obtain this information is Visual-Inertial-Actuator Odometry (VIAO) which combines commonly available vision and inertial sensors with actuation data which consists of a model of the vehicle dynamics and input measurements. In this paper, we propose VIAO system based on the existing VIMO (Visual Inertial Model-Based Odometry) method. Our approach includes a dynamical model for a multirotor UAV with rotor drag. In addition, a disturbance observer is added for constant force estimation. The observer is integrated to the optimization-based method by adding a residual term to the cost functional. The proposed system can differentiate between the constant or slowly time-varying component of the external force and accelerometer bias. We evaluate the performance using a benchmark dataset and show an average of 21% improvement in position estimation accuracy.
更多查看译文
关键词
Force estimation,UAV,Rotor drag,Sliding-window optimization,Visual-inertial odometry
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要