Design method of control law of tilt-rotor aircraft based on modal characteristic analysis

Baojun Yang; Junhong Zhang; Zhaorui Song

doi:10.1117/12.2652289

10 November 2022 Design method of control law of tilt-rotor aircraft based on modal characteristic analysis

Baojun Yang, Junhong Zhang, Zhaorui Song

Proceedings Volume 12331, International Conference on Mechanisms and Robotics (ICMAR 2022); 123311U (2022) https://doi.org/10.1117/12.2652289
Event: International Conference on Mechanisms and Robotics (ICMAR 2022), 2022, Zhuhai, China

Abstract

As a combination of rotor and fixed-wing aircraft, tilt-rotor aircraft can integrate functions such as vertical takeoff and landing, short takeoff and landing, and high-speed cruise, greatly broadening the flight envelope of the aircraft, and significantly increasing the functions of the aircraft. The tilting of the rotor depends on nacelles or tiltable rotors installed on the wing tips. When the tilt angle changes, the configuration of the aircraft and the direction of the pulling force vector change, and the flight dynamics are complex. Accurate analysis of its characteristics is the basis of flight control law design. This paper proposes a control law design method based on the analysis of modal characteristics. Through the distribution of the characteristic roots of the small disturbance equations of different flying mechanism types and the analysis of the influence of different types of feedback signals under multiple configurations, the tilting rotor modal characteristics is explained in detail. Based on the results of modal analysis, the design method and structure of the control law of the all envelope are proposed. This method can not only provide support for the design of the tilt-rotor flight control system, but also has significant theoretical and engineering significance for the design of variable configuration aircraft.

Citation Download Citation

Baojun Yang, Junhong Zhang, and Zhaorui Song "Design method of control law of tilt-rotor aircraft based on modal characteristic analysis", Proc. SPIE 12331, International Conference on Mechanisms and Robotics (ICMAR 2022), 123311U (10 November 2022); https://doi.org/10.1117/12.2652289

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KEYWORDS

Feedback signals

Control systems

Analytical research

Control systems design

Curium

Feedback control

Aerodynamics

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