A fundamental problem that the bearing rigidity theory studies is to determine when a framework can be uniquely determined up to a translation and a scaling factor by its inter-neighbor bearings. While many previous works focused on the bearing rigidity of two-dimensional frameworks, a first contribution of this paper is to extend these results to arbitrary dimensions. It is shown that a framework in an arbitrary dimension can be uniquely determined up to a translation and a scaling factor by the bearings if and only if the framework is infinitesimally bearing rigid. In this paper, the proposed bearing rigidity theory is further applied to the bearing-only formation stabilization problem where the target formation is defined by inter-neighbor bearings and the feedback control uses only bearing measurements. Nonlinear distributed bearing-only formation control laws are proposed for the cases with and without a global orientation. It is proved that the control laws can almost globally stabilize infinitesimally bearing rigid formations. Numerical simulations are provided to support the analysis.
Multi-Robot Bearing-based Pose Estimation via Angle Rigidity
Institute of Engineering Technology and Sciences "Hilario Fernández Long" (CONICET-UBA)(希拉里·费尔南德斯·隆工程技术与科学研究所(CONICET-UBA));Centre for Automation and Robotics (CSIC-UPM)(自动化研究中心(CSIC-UPM));Artificial Intelligence and Robotics Laboratory, Universidad de San Andrés and CONICET(人工智能与机器人实验室,圣安德烈斯大学及CONICET)
Angle-based Localization and Rigidity Maintenance Control for Multi-Robot Networks
Centre for Automation and Robotics (CSIC-UPM)(自动化与机器人中心(CSIC-UPM));Artificial Intelligence and Robotics Laboratory (UDESA) and CONICET(人工智能与机器人实验室(UDESA)和CONICET)
Weak Rigidity Theory and its Application to Multi-agent Formation Stabilization
Center for Complex Systems, Xidian University(西安电子科技大学复杂系统研究中心);Department of Applied Mathematics, Hong Kong Polytechnic University(香港理工大学应用数学系);Center for Systems and Control, College of Engineering, Peking University(北京大学工学院系统与控制中心)