In this section, you can access to the latest technical information related to the FUTURE project topic.

Observer enhanced control for spin-stabilized tethered formation in earth orbit

This paper addresses the issues relevant to control of spin-stabilized tethered formation in circular orbit. Due to the dynamic complexities and nonlinear perturbations, it is challenging to promote the control precision for the formation deployment and maintenance. In this work, the formation dynamics are derived with considering the spinning rate of the central body, then major attention is dedicated to develop the nonlinear disturbance observer. To achieve better control performance, the observer-enhanced controller is designed by incorporating the disturbance observer into the control loop, benefits from the disturbance compensation are demonstrated, and also, the dependences of the disturbance observer performance on some important parameters are theoretically and numerically analyzed.

» Author: Zhai Guang, Li Yuyang, Bin Liang

» Reference: Acta Astronautica, Volume 145

» Publication Date: 01/04/2018

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