a new mathematical model for the optimal production isformulated for the inventory management system under time-varyingand stochastic inflation environment for deteriorating items. the timehorizon is finite and demand rate is dependent to the inflation. in thereal situation, some but not all customers will wait for backlogged itemsduring a shortage period, such as for fashionable commodities or...

this paper is pertained with the problem of admissibility analysis of uncertain discrete-time nonlinear singular systems by adopting the state-space takagi-sugeno fuzzy model with time-delays and norm-bounded parameter uncertainties. lyapunov krasovskii functionals are constructed to obtain delay-dependent stability condition in terms of linear matrix inequalities, which is dependent on the low...

conjugated polymer actuators can be employed to achieve micro and nano scale precision, and have a wide range of applications including biomimetic robots, and biomedical devices. in comparison to robotic joints, they do not have friction or backlash, but on the other hand, they have complicated electro-chemo-mechanical dynamics which makes modelling and control of the actuator really difficult....

Utilizing the framework of the theory of dynamic systems on time scales for measure chains, stability of moving invariant sets is discussed. These results include both continuous and discrete dynamic systems. invar iant u l i simravl eebis mdgr ad obis sakiT xi, romel Ta drois Skal a SeiZl eba iKos rogor c uCKvet i, aseve diskret u l i. 1. Introduction Nonlinear diierential equations with uncer...

The time delay in transport of material and energy is an inseparable part of many real industrial processes. Unfortunately, the presence of time-delay terms itself almost always brings problems in control and, quite naturally, the situation is even more complicated if this delay is uncertain. The source of the uncertainty can arise e.g. from simplifications during mathematical modelling, change...

Această lucrare tratează problema conducerii robuste a sistemelor liniare cu incertitudine cu argument întârziat ce conţin elemente de execuţie cu saturaţie. Utilizând fundamente teoretice, cum ar fi teoria Razumikhin cu privire la stabilitatea sistemelor cu incertitudine cu argument întârziat, teoria Lyapunov a stabilităţii ecuaţiilor diferenţiale funcţionale, tehnici de optimizare via inegali...

In this paper we consider an agent on a financial market who can trade with an uncertain time horizon by investing in risky stocks and a risk-free bond. He aims at maximizing the utility he draws from his final wealth measured by some utility function. We obtain a sufficient and necessary condition for the optimality, which gives an explicit expression for the optimal strategies as solutions of...

This paper addresses the issue of robust filtering for time varying uncertain discrete time systems. The proposed robust filters are based on a regularized least-squares formulation and guarantee minimum state error variances. Simulation results indicate their superior performance over other robust filter designs. keywords: regularization, least-squares, robust filter, regularization parameter,...