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Affiliation of Author(s):航天学院

Title of Paper:Feedback linearization with active disturbance rejection for entry guidance

Journal:Chinese Control Conf., CCC

Abstract:The phase in which the Mars probe enters the atmosphere is the most important phase to ensure the accuracy of the landing of the vehicle and the trajectory tracking in the entry phase is achieved by controlling the bank angle. Considering the large external disturbance during the actual flight, this paper proposes a method to compensate dynamically the unknown disturbance by active disturbance rejection algorithm, and combines with the feedback linearization method of tracking drag acceleration to design the longitudinal guidance law that changes the size of bank angle in the entry phase. A funnel boundary is designed to adjust the sign of bank angle to achieve the lateral guidance. The simulation results show that the tracking effect to drag acceleration of the method with active disturbance rejection is better, and the position accuracy of the parachute deployment point is higher. © 2019 Technical Committee on Control Theory, Chinese Association of Automation.

ISSN No.:1934-1768

Translation or Not:no

Date of Publication:2019-07-01

Co-author:Xu Biao,Hitboy

Correspondence Author:lxf