| Citation: | ZHOU Tao, WANG Zian, GONG Zheng, et al. Control strategy optimization of dynamic transition processes of thrust-vectored V/STOL aircraft[J]. Journal of Aerospace Power, 2023, 38（2）：408-419 doi: 10.13224/j.cnki.jasp.20210412
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For the dynamic tilting model of the vertical/short takeoff and landing (V/STOL) aircrafts during the transition process, a deep insight into the optimal control strategy was gained by considering the constraints of the conversion corridor, control redundancy and the demand indexes of different take-off/landing missions. Considering the jet-induced effect of the prototype aircraft, the V/STOL aircraft was totally modeled. A calculation architecture for the general conversion corridor was established based on the attainable balance set methodology. A control strategy was designed to ensure smooth conversion from the V/STOL aircraft transition process to the high-speed forward flight phase. By converting the dynamic tilting problem during the transition process to a dynamic nonlinear optimal control problem, the appropriate indexes and constraints were established according to the characteristics of different take-off/landing missions. The method of calculating the conversion corridor by reachable equilibrium set was not limited by the type of aircraft, but also was used to simplify the construction process with good versatility and robustness. The optimization results with the goal of smooth transition grealy reduced the pilot’s manipulation change during the aircraft transition process, so that the pilot can focus more on the manipulation of the aircraft motion. The optimization result for shorter distance shortened the flight distance of landing process by about 30%. The optimization results from the control strategy enabled the pilot to better grasp the control focus and boundary, and increased the safety of the entire dynamic transition process.
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