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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2019, Vol. 40 ›› Issue (6): 122772-122772.doi: 10.7527/S1000-6893.2019.22772

• Fluid Mechanics and Flight Mechanics • Previous Articles     Next Articles

Optimization of short take-off performance for carrier-based V/STOL aircraft via LADRC method

WU Wenhai, GAO Yang, WANG Zijian, ZHOU Siyu   

  1. Department of Control Engineering and Command, Qingdao Branch, Naval Aeronautical University, Qingdao 266041, China
  • Received:2018-11-12 Revised:2018-12-08 Online:2019-06-15 Published:2019-06-26
  • Supported by:
    National Natural Science Foundation of China (60674090, 51505491)

Abstract: Vertical and/or Short Take-Off and Landing (V/STOL) aircraft requires to take off in taxiing on limited decks and to climb rapidly and steadily after departure from the ship. To address this practical need, the whole process is optimized to improve the short take-off performance. A nonlinear dynamic model reflecting the control characteristics of the multi-thrust vectors is established, including the ground effect model and the jet-induced effect model unique to V/STOL aircraft. Taking the shortest taxiing distance and the least acceleration time after departure as the optimization indexes, the pre-set multi-thrust deflection schemes are proposed at taxiing on the deck and at the initial stage of departure. On this basis, an approach combining the Linear Active Disturbance Rejection Control (LADRC) method with backstepping is proposed to effectively control the uncertain non-affine climbing angle system. An auxiliary compensation system is designed to suppress the saturation of the control variable, and the tracking error of the climbing angle is proved to be bounded. Then using a high-order LADRC method, the pitch angle controller is designed to ensure that the V/STOL aircraft can climb ultimately in a stable attitude. Simulation results show that the proposed sectional optimal control strategy of "twice preset multi-thrust deflection angles plus climbing angle control plus pitch angle control" not only can improve the short take-off performance of V/STOL aircraft, but also have strong robustness to internal uncertainties and external disturbances, and thus can cater to the demands of actual flight tasks.

Key words: V/STOL aircraft, LADRC, short take-off, performance optimization, thrust vector control

CLC Number: