Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Research on attitude control method of statically unstable aerial bomb in initial trajectory section
| DOI: | 10.11809/bqzbgcxb2024.11.033 |
| Keywords: | statically unstable; guided bomb; aircraft bomb separation; attitude control; uncertainty; extended state observer |
| Abstract: | An aviation guided bomb with folded wing structure delays the opening of the wing after ejection, and the bomb has a large static degree of unstable before the wing is deployed.A non singular terminal sliding mode control method based on improved extended state observer compensation is proposed to solve the problem of aircraft bomb separation safety and attitude control of aerial bomb in the static unstable state.This method uses the strong robustness of sliding mode control to deal with various external disturbances and internal uncertainties in the process of aircraft bomb separation.In order to suppress the control chattering, an improved extended state observer with time varying bandwidth is designed to estimate the total uncertainty of the system, so as to form a compensation control signal to improve the control effect.And the Lyapunov stability and finite time convergence of the control system are proved.The simulation results show that the designed method can realize the fast and stable control of the attitude of the projectile in the initial section of the trajectory and has high control quality, thus ensuring the safety of aircraft bomb separation and creating a good initial condition for the midcourse guidance. |
| Published: | 2024-11-30 |