Paper
Parameter-Optimized High-order Active Disturbance Rejection Controllers for a Generic Hypersonic Flight Vehicle
- Authors:
- Fang Yang; Jianqiang Yi; Xiangmin Tan; Ruyi Yuan
- Abstract
- A general decoupled control scheme based on the high-order active disturbance rejection controllers (HOADRCs) is proposed for the longitudinal dynamics of a generic hypersonic flight vehicle (GHFV). The longitudinal model of the GHFV is multivariable, high-order, highly nonlinear, tight coupling, highly unstable and includes uncertainties and disturbances. The feedback linearized model is decoupled into two independent channels. In each channel, the overall disturbance contains high-order derivatives and other complicated terms which are difficult to compute and therefore direct computing is not practical in real flight. Two HOADRCs are designed separately. Extended state observers (ESOs) are designed to estimate the overall disturbances. Moreover, high-order full-space aerodynamic coefficients are adopted. The nonlinear state error feedback (NLSEF) parameters are optimized using MATLAB simulink module. The simulation results demonstrate that the HOADRCs are highly effective and strongly robust for velocity and altitude control.
- Keywords
- Hypersonic Flight Vehicle; Decoupled Control; High-Order; Active Disturbance Rejection Controller; Feedback Linearization; Extended State Observer; Nonlinear State Error Feedback; Parameter-Optimized
- StartPage
- 6
- EndPage
- 12
- Doi