In this paper, the modelling and simulation of recipe driven multipurpose chemical or biochemical plants using an object oriented approach is described. A data model is presented which enables the description of all important aspects of batch plants: the model of the plant (reactors, tanks,...

For the interval linear system Ax = b, the linear tolerance problem is considered that requires inner evaluation of the tolerable solution setΣ∀∃(A, b) = {x ∈ Rn ∣ (∀A ∈ A)(Ax ∈ b)} formed by all point vectors x such that the product Ax remains within b for all possible A ∈ A....

Harmonics generated by high power conventional AC/DC converters have become a serious problem for the AC mains as they can only be removed by using bulky passive filters. However, the remarkable progress made by power electronic devices in recent years makes it possible to concieve the...

This article presents the modelling of a motor vehicle and its braking system (Fig. 1). The system to be modelled consists of the vehicle with all the suspension elements-wheel, tyre and wheel-road interface. The model must account for the behaviour of the whole system according to the...

This paper is a survey paper on simulation of energy systems. It covers important aspects of the different phases of modeling an energy system. It also gives a short introduction to robust numerical methods which it is strongly recommended to use. Finally, 3 short examples illustrates some of...

Existing ac-dc low harmonic rectifiers are costly and require complex control schemes to minimize input current distortion. Introduced here is a new class of low cost ac-dc high power factor/low harmonic rectifiers. With active zero current resonant switch (Z.C.S) added to the diode bridge...

A model corresponding to a fast algorithm to compute the steady-state of the induction motor is presented. The principle of the model is to start from the idea that the time pulsation is ω in the stator region and sω in the rotor region. The coupling between the rotor and the stator is made...

LINPACK is a well known and heavily used software library which offers a collection of routines to solve linear algebra problems. A major drawback of LINAPACK and similar packages is the fact that the provided routines merely compute an approximation for the solution of a given problem. In some...

The paper presents a relatively simple model describing the nitrogen dynamics in an alternating waste water treatment process. Only two components, ammonia and nitrate plus nitrite, are considered, and reaction rates are described using empirical expressions. Despite its simplicity, the model...