An observer-based disturbance estimation method was developed. The polynomial approximation of disturbance was introduced, and the observer gain was optimized so that the H-infinity norm of the estimation error was minimized. In this method, the estim...
An observer-based disturbance estimation method was developed. The polynomial approximation of disturbance was introduced, and the observer gain was optimized so that the H-infinity norm of the estimation error was minimized. In this method, the estimated disturbance was adjusted using the estimated output error at several arbitrary time points. The proposed method was applied to aircraft dynamics and verified by numerical simulation.