The designed control scheme is robust against the system's uncertainty and guarantees the property of asymptotical stability in the presence of an external disturbance.
Comparing with the existing results, the resulting control system has a simpler structure, and can deal with parametric uncertainties as well as non-parametric uncertainties, yet guarantees asymptotic stability of the tracking error dynamics.
Since the powers of the president, the cabinet and parliament are poorly defined, a period of uncertainty is guaranteed.
Millennials are living in a time of economic uncertainty, without guaranteed access to the affordable housing, free education and decent job market enjoyed by the generations before them.
Abbott also told voters on 2 August that he would end uncertainty by "guaranteeing that no school will be worse off over the forward estimates period" – a reference to the four-year budget cycle.
"As far as I'm concerned, as far as Christopher Pyne is concerned, as far as the Coalition is concerned, we want to end the uncertainty by guaranteeing that no school will be worse off over the forward estimates period; we we will honour the agreements that Labor has entered into; we will match the offers that Labor has made; we will make sure that no school is worse off," Abbott said.
The AF surface valleys designed are then large enough to contain this uncertainty and guarantee the unmasking of a weak target.
A novel fractional-order sliding mode controller for output tracking of a time-varying reference signal is designed which can conquer the uncertainties and guarantees the asymptotic convergence of the system output toward the desired time-varying reference signal.
The switching plane is chosen in such a way that the reaching phase is eliminated and insensitivity of the system with reference to the external disturbances and the model uncertainty is guaranteed from the very beginning of the proposed control action.
Josep Bou, president of Businessmen of Catalonia, an association of entrepreneurs that opposes independence, claims that independence would create "great social uncertainty" and "guarantee instability".
