Partial Lyapunov Strictification: Dual Quaternion based Observer for 6-DOF Tracking Control

Abstract : Based on the dual-quaternion description, a smooth six-degree-of-freedom observer is proposed to estimate the incorporating linear and angular velocity, called the dual angular velocity, for a rigid body. To establish the observer, some important properties of dual vectors and dual quaternions are established, additionally, the kinematics of dual transformation matrices is deduced, and the transition relationship between dual quaternions and dual transformation matrices is subsequently analyzed. An important feature of the observer is that all estimated states are ensured to be C 1 continuous, and estimation errors are shown to exhibit asymptotic convergence. Furthermore, to achieve tracking control objectives, the proposed observer is combined with an independently designed proportional-derivative-like feedback control law (using full-state feedback), and a special Lyapunov "strictification" process is employed to ensure a separation property between the observer and the controller, which further guarantees almost global asymptotic stability of the closed-loop dynamics. Numerical simulation results for a prototypical spacecraft pose tracking mission application are presented to illustrate the effectiveness and robustness of the proposed method.
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IEEE Transactions on Control Systems Technology, Institute of Electrical and Electronics Engineers, 2018, 14, pp.1-17. 〈10.1109/tcst.2018.2864723 〉
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https://hal.inria.fr/hal-01918284
Contributeur : Frederic Mazenc <>
Soumis le : mercredi 14 novembre 2018 - 11:01:21
Dernière modification le : mercredi 21 novembre 2018 - 17:21:09

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Hongyang Dong, Qinglei Hu, Maruthi Akella, Frédéric Mazenc. Partial Lyapunov Strictification: Dual Quaternion based Observer for 6-DOF Tracking Control. IEEE Transactions on Control Systems Technology, Institute of Electrical and Electronics Engineers, 2018, 14, pp.1-17. 〈10.1109/tcst.2018.2864723 〉. 〈hal-01918284〉

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