Trajectory tracking controller for quadrotors without velocity and angular velocity measurements. Issue 1 (1st January 2017)

• Record Type: Journal Article
• Authors: Zou, Yao
• Is Part Of: IET control theory & applications. Volume 11:Issue 1(2017)
• Page Start: 101
• Page End: 109
• Publication Date: 2017-01-01
• Subjects: trajectory control -- nonlinear control systems -- hierarchical systems -- position control -- matrix algebra -- attitude control -- control system synthesis -- asymptotic stability -- autonomous aerial vehicles; nonlinear trajectory tracking controller -- quadrotor attitude -- hierarchical control strategy -- attitude loops -- angular velocity information -- position loop control parameters -- singularity‐free extraction -- command rotation matrix -- attitude control scheme -- initial condition constraint -- attitude tracking error -- hierarchical system synthesis theory -- trajectory tracking manoeuvres -- asymptotically stable property; Control theory -- Periodicals; Automatic control -- Periodicals; 629.8312
• DOI: 10.1049/iet-cta.2016.0647
• Languages: English
• ISSNs: 1751-8644

Abstract

Abstract : This study presents a non‐linear trajectory tracking controller for quadrotors without velocity and angular velocity measurements. The rotation matrix is utilised to represent the quadrotor attitude. Based on the hierarchical control strategy, the position and attitude loops are investigated separately, where two novel auxiliary systems are, respectively, introduced to obviate usage of the velocity and angular velocity information in the corresponding control developments. In addition, a criterion for choosing the position loop control parameters is established to ensure the singularity‐free extraction of the command rotation matrix. Further, an attitude control scheme with the initial condition constraint is exploited to ensure the attitude tracking error converging to the desired equilibrium all the time. In terms of the hierarchical system synthesis theory, it is demonstrated that the quadrotor, with the proposed controller, is able to accomplish trajectory tracking manoeuvres with asymptotically stable property. Finally, simulations verify theoretical results.