Vertical roller mills (VRMs) are well-established grinding equipment for various tasks in the coal and cement industry. There are few studies on simulation of VRMs. In this research work, application of perfect mixing model for simulation of a VRM in a cement grinding plant was investigated. Two sampling surveys were carried out on the VRM circuit. The samples and data from the first survey wer...

The well-known electro-mechanical analogy that equates current, voltage, resistance, inductance and capacitance to force, velocity, damping, spring constant and mass has a shortcoming in that mass can only be used to simulate a capacitor which has one terminal connected to ground. A new model that was previously proposed by the authors that combines a mass with a pulley (MP) is shown to simulat...

An improved analytical model for IGB power transistors has been developed for circuit simulators. Special attention is paid to the physical modeling of the short channel in the DMOS branch and the buffer layer near the anode in IGBT device structures. Good agreement between simulated and measured data has been obtained.

We are the rst to develop SPICE compatible circuit model for reluctance K It can be combined with any reluctance based extraction method to perform RLC simulation directly without the need of inverting reluctance matrix back into inductance domain or modifying conventional simulator To build symmetrical reluctance matrix we also proposed blocked K method based on group concept to cover more mag...

A simple, general, yet realistic MOSFET model, namely the nth power law MOSFET model, is introduced. The model can express I -V characteristics of short-channel MOSFET's at least down to 0.25-pm channel length and resistance inserted MOSFET's. The model evaluation time is about 1 / 3 of the evaluation time of the SPICE3 MOS LEVEL3 model. The model parameter extraction is done by solving single ...

In very deep submicron technologies, the parasitic capacitor and resistance can have a significant impact on propagation delay and functional failure. Several methods consist in evaluating the output delay or giving an approximation of the output signal. These methods are really simple and are easily used in timing analysis. However, they are unusable in functional failure analysis such as cros...

Coplanar-slotline tees have been used in a number of microwave circuits, although no complete models were available to explain their behavior. In this letter, a new “circuit-model” for a coplanar-slotline tee is presented. The model, based on the separation of coplanar waveguide (CPW) even and odd modes into two different ports, explains the tee’s behavior even if CPW air bridges are not used a...

The background subtraction is a technique widely used for video analysis, mainly moving object detection for surveillance systems. Such algorithms must be robust, fast and it has to be able to deal with dynamic backgrounds like water surface or moving tree branches. Also, they should be able to deal with illumination changes and objects casted shadows. Generally, in computer vision the algorith...

In the present study, a model of a large Lithium Polymer (Li-Po) battery for use in the simulation of Hybrid Electric Vehicles (HEVs) is developed. To attain this goal, an Equivalent Circuit (EC) consisting of a series resistor and two RC parallel networks is considered. The accuracy and the response time of the model for use in an HEV simulator are studied. The battery parameters identifica...