Adaptive Model-Free Control Based on an Ultra-Local Model With Model-Free Parameter Estimations for a Generic SISO System

mortality forecasting based on lee-carter model

over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...

Model Free Adaptive Control

Aerodynamic-Free Adaptive Control of the NASA Generic Transport Model

Unanticipated and unknown changes in an aircraft’s aerodynamic stability derivatives may cause undesirable effects that render pre-designed control laws unsuitable for maintaining stability. Gradual changes in the stability derivatives may be due to icing on lifting surfaces, whereas structural damage may cause a sudden change. For this study, we use the nonlinear NASA Generic Transport Model (...

Robust Trajectory Free Model Predictive Control of Biped Robots with Adaptive Gait Length

This paper employs nonlinear disturbance observer (NDO) for robust trajectory-free Nonlinear Model Predictive Control (NMPC) of biped robots. The NDO is used to reject the additive disturbances caused by parameter uncertainties, unmodeled dynamics, joints friction, and external slow-varying forces acting on the biped robots. In contrary to the slow-varying disturbances, handling sudden pushing ...

Derivative-Free Model Reference Adaptive Control of a Generic Transport Model

In this paper, we present both simulated and flight test results of a derivative-free model reference adaptive controller applied to a generic transport model, a high-fidelity transport aircraft model developed by NASA Langley Research Center. The derivative free form of adaptive control is expected to provide faster adaptation and smoother error transients, particularly for situations where ai...