Systems Engineering and Electronics ›› 2024, Vol. 46 ›› Issue (11): 3820-3826.doi: 10.12305/j.issn.1001-506X.2024.11.24

• Guidance, Navigation and Control • Previous Articles     Next Articles

Incremental dynamic inverse control based on improved tracking differentiator

Shikang FU1,2, Junhui LIU1,2,*, Hao CHEN3, Jiayuan SHAN1,2   

  1. 1. School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
    2. Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, Beijing Institute of Technology, Beijing 100081, China
    3. Beijing Institute of Electronic Engineering, Beijing 100093, China
  • Received:2023-12-18 Online:2024-10-28 Published:2024-11-30
  • Contact: Junhui LIU

Abstract:

Aiming at the strong aerodynamic nonlinearity and model uncertainty in high angle of attack flight control processes, an incremental dynamic inverse control method based on an improved tracking differentiator is proposed. Considering the dynamic characteristics of attitude control for aircraft at high angles of attack, a controller is designed with an outer loop for dynamic inversion and an inner loop for incremental dynamic inversion. Aiming at the problems of signal flutter and poor filtering effect when using traditional tracking differentiators to obtain the angular acceleration information required for incremental dynamic inversion, an improved tracking differentiator is designed by combining nonlinear and linear functions. Through high angle of attack flight numerical simulation, it is verified that the designed tracking differentiator has a certain degree of noise resistance while accurately extracting angular acceleration. The incremental dynamic inverse controller designed based on this differentiator enhances robustness to aerodynamic uncertainty.

Key words: improved tracking differentiator, nonlinear, incremental dynamic inverse control, aerodynamic uncertainty

CLC Number: 

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