Extrusion is a continuous process and successful economic production depends on maintaining stable output and melt quality at an accurately controlled rate. Current screw design technology, the use of DC drives, computerized controllers and raw material testing help to deliver the melt to the extrusion die at relatively constant temperature, pressure and viscosity. However, even the slightest v...

In this article the parametric optimal control problem (POCP) with mixed controlstate constraints is considered. The aim is specification of parameter rang variation and corresponding approximate optimal control for approximate access to an optimal trajectory respect to unperturbed problem. For this purpose a measure theoretical approach is applied for observation of the problem in the form of ...

We consider a dynamic control problem associated with a generalized Brownian network, the objective being to minimize expected discounted cost over an infinite planning horizon. In this Brownian control problem (BCP), both the system manager’s control and the associated cumulative cost process may be locally of unbounded variation. Due to this aspect of the cost process, both the precise statem...

Stochastic maximum principle of nonlinear controlled forward-backward systems, where the set of strict (classical) controls need not be convex and the diffusion coefficient depends explicitly on the variable control, is an open problem impossible to solve by the classical method of spike variation. In this paper, we introduce a new approach to solve this open problem and we establish necessary ...

Abstract: Event-triggered control is a promising alternative to time-triggered control, especially for severely resource-constrained networked embedded systems. Previous work has shown that event-triggered control can reduce both the output variance and the average control rate in scalar linear stochastic systems compared to time-triggered control. It has also been shown how a minimum inter-con...

This paper is at an interface between analysis, topology and control theory. In it we prove a non-commutative analogue of the result that functions on the circle are determined, up to Lebesgue null sets, by their Fourier coefficients. The equivalence relation determined by the “null sets” for this new problem enable us to construct a continuous analogue of the free group as a quotient subspace ...

effects of culture medium containing hormonal compositions on phenotypic and chromosomal variations of sugarbeet cultured tissues were examined. experiments were carried out in different nacl levels. cytological studies were conducted on calli originated from suspension culture. hypocotyl of seven day old seedlings of the two diploid lines were cultured in ms medium containing hormonal composit...

Load side management is the basic and significant principle to keeping the balance between generation side and consumption side of electrical power energy. Load side management on typical medium voltage feeder is the power energy consumption control of connected loads with variation of essential parameters that loads do reaction to their variation. Knowing amount of load's reaction to each para...