Stability boundary analysis of hypersonic vehicle with control saturation and bandwidth limitation
CHEN Bo-yi
LIU Yan-bin
LEI Hao
SHEN Hai-dong
LU Yu-ping
Abstract：In order to declare the stability of open-loop unstable air-breathing vehicles system with control saturation and bandwidth limitation, the stability boundary along with null controllable region of such system is investigated. First, the modeling approach of a air-breathing hypersonic vehicle and the main issues of control system design are briefly introduced. Second, Considering the control input constraints, the stability boundary is quantitatively defined, which depends on the location of unstable pole, its left eigenvector, and control saturation. Besides, the bandwidth limitation of actuators will reduce the stability region. The analytical expressions of null controllable boundary for short mode of the hypersonic vehicle is proposed. With Monte-Carlo analysis, the simulation results indicate that, the null controllable region for unstable system with specific control law is within the stability boundary, and the impact of bandwidth limitation of actuators shows the same with theoretical analysis, regardless of the control law. The stability of open-loop unstable system is extremely restricted with control saturation and bandwidth limitation.
Keywords：hypersonic vehiclenull controllable regioncontrol saturationsliding mode control
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：11( 1508-1518 )