This paper is concerned with the problems of robust switching control for near-space morphing vehicles (NMVs) a large range parameter uncertainty and external disturbance. For this purpose, novel linear/nonlinear active disturbance rejection method longitudinal dynamical model NMVs based on type-2 fuzzy logic system proposed. Both linear (LADRC) nonlinear (NLADRC) were designed velocity altitud...

The connection of wind generators with electric power system influences the system stability and nodal voltages. This paper performs uncertainty analysis to investigate the impact of wind generation variation on the small disturbance voltage stability. The probabilistic collocation method (PCM) is presented as a computationally efficient method to conduct the uncertainty analysis. It has been i...

In this work a motion control scheme, which belongs to the class of the control schemes known as a sliding mode control with disturbance estimation is proposed. Adaptive fuzzy disturbance estimator works as an identifier of variable part of a system dynamics. Adaptation algorithm is derived by using the Lyapunov stability theory and provides global asymptotic stability of the state errors. For ...

This paper presents a new control, namely additive-state-decomposition dynamic inversion stabilized control, that is used to stabilize a class of multi-input multi-output (MIMO) systems subject to nonparametric time-varying uncertainties with respect to both state and input. By additive state decomposition and a new definition of output, the considered uncertain system is transformed into a min...

Abstract: The paper investigates the robust H∞ problem for a class of generalized forced Hamilton system with uncertainty. We begin with presenting a design approach of robust H∞ controller and show that the L2 gain from the disturbance input to the regulation output signal may be reduced to any given level provided that a kind of algebraic inequality has a solution. Then, by means of the propo...

Original scientific paper The indicators and methods of the probabilistic stability analysis of interconnected power grid’s low frequency oscillation are put forward in this paper, and the case study based on the real interconnected power grid is investigated. As the probabilistic distribution of various uncertain factors of power grid is known, the method of two-point-estimation is adopted to ...

A robust control scheme is presented that stabilizes a nonlinear model of a power system to a very large class of disturbances that includes any disturbances causing the system to exhibit sustained oscillation. The disturbance can be anywhere in the power system. The fact that the improvement in stability is significant and system wide leads to the name globally robust control. The control is l...

This note investigates the trade-off arising in disturbance attenuation for nonlinear feedback systems in the framework of integral input-to-state stability. Similarly to the linear case, we show that if a gain tuning on one subsystem is used to drastically reduce the effect of its exogenous disturbances, then the other subsystem’s disturbance attenuation is qualitatively the same as in open loop.

Robot hybrid control has been noted for its difficulty due to the so-called dynamic stability problem, and consequently demands robust control algorithms that can overcome this difficulty, yet with accuracy. In this paper, • control law based on time-delay controlhas been derived for hybrid control with • condition for closed-loop stability. In addition, its relationship with the disturbance ob...

In this paper we investigate the e®ects of microphone and speaker locations on the performance of active noise control in ducts. We study a so-called \symmetric" con ̄guration in which the collocated performance microphone/control speaker and the collocated measurement microphone/disturbance source pairs are located equidistance from the duct center. By applying an \alignment angle" analysis to ...