Modeling and active disturbance rejection control for sequential airdrop operations

Journal of Vibroengineering

Shiwei Zhao¹  Dong Wang²  Xiuxia Sun² 

[1] 93808 Troops, Chinese People’s Liberation Army, Lanzhou, China;Aeronautics and Astronautics Engineering College, Air Force Engineering University, Xi’an, China;

关键词: sequential airdrop;    nonlinear system;    active disturbance rejection control (ADRC);    extended state observer (ESO);    time-delay system;   

DOI  :  10.21595/jve.2016.17263

来源: DOAJ

【 摘 要 】

With the assumption t at the motion acceleration of the cargo is unknown, the dynamic model that accords with the engineering practice of sequential cargo airdrop operations is derived by using the separation body method, which can describe the impact of the sequential moving cargos on the flight safety and airdrop-mission capacity. On this basis, a novel flight control method is designed based on the active disturbance rejection control (ADRC) theory. the system is decoupled and linearized through the nonlinear state error feedback; the total unknown disturbances, including unmolded dynamics and uncertainty, are estimated and compensated real-timely by the extended state observer. Moreover, with the consideration of the time-delay system, the ADRC is improved to enhance the accuracy and rapidity of the control system. Simulations are carried out under the condition that one transport aircraft performs sequential airdrop operations. The results verify that the desirable performance and robustness have been achieved and the proposed control method is quite competent for the sequential airdrop operations.

【 授权许可】

Unknown