Hybrid Feedback for Global Tracking on Matrix Lie Groups SO(3) and SE(3)

• 成果类型: Article
• 署名作者: Wang, Miaomiao; Tayebi, Abdelhamid
• 署名单位: Western University (University of Western Ontario); Lakehead University
• 刊物名称: IEEE TRANSACTIONS ON AUTOMATIC CONTROL
• ISSN/ISSBN: 0018-9286
• DOI: 10.1109/TAC.2021.3097704
• 发表日期: 2022
• 页码: 2930-2945
• 关键词: Attitude control; asymptotic stability; MANIFOLDS; Numerical stability; Stability criteria; Aerospace electronics; Velocity measurement; Attitude control; hybrid feedback; Matrix Lie group; rigid body system; velocity-free feedback

摘要

We introduce a new hybrid control strategy, which is conceptually different from the commonly used synergistic hybrid approaches, to efficiently deal with the problem of the undesired equilibria that precludes smooth vectors fields on SO(3) from achieving global stability. The key idea consists in constructing a suitable potential function on SO(3) x R involving an auxiliary scalar variable, with flow and jump dynamics, which keeps the state away from the undesired critical points while, at the same time, guarantees a decrease of the potential function over the flows and jumps. Based on this new hybrid mechanism, a hybrid feedback control scheme for the attitude tracking problem on SO(3), endowed with global asymptotic stability and semiglobal exponential stability guarantees, is proposed. This control scheme is further improved through a smoothing mechanism that removes the discontinuities in the input torque. The third hybrid control scheme, proposed in this article, removes the requirement of the angular velocity measurements, while preserving the strong stability guarantees of the first hybrid control scheme. This approach has also been applied to the tracking problem on SE(3) to illustrate its advantages with respect to the existing synergistic hybrid approaches. Finally, some simulation results are presented to illustrate the performance of the proposed hybrid controllers.