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This treatise gives constructing principles, hardware ones as well as software ones, for an operator's console adapted to the process computer and DDC software package of the Division of Automatic Control. The console is implemented with a micro computer trademark TRANSINTRO with CPU INTEL 8008. The display unit consists of four registers: "node identity", "parameter identity&qu
The goal of this work is to use basic physical laws to construct a model and a controller for an industrial gas turbine. The model shall simulate all of security and controlling interesting process variables, with resonable accurancy. The controller shall use the process up to the limits to get it as fast as possible at load changes. An unlinear model for a gas turbine STAL GT-120b has been establ
The achievable accuracy of models derived by identification depends on a number of factors, e.g. the conditions during the experiments.
The accuracy is studied by simulation for a number of different experiments: open loop experiments with different types of input signals and closed loop experiments with different types of regulators. For this purpose a special simulation program has been wri
A simple mathematical model has been made for the heat exchange in a freezing chamber. By this the contents of the room have been regarded as a warm and a cold mass. Equations for convection and radiation between these masses, the room air and the cooling pipes have been made from physical data. The heat transference in the articles, which is described by partial differential equations, has been a
The aim of this report is to provide an extensive description of regulator RD100, and its subsystems, from an electrical point of view.
The report is written in a step-like manner in order to suit various kinds of readers, from those who only need a basic knowledge about the regulator, to those who will be eventually redesigning the whole regulator or parts thereof, to make it meet future
The purpose of this report is to study dynamic models of processes used in waste water treatment. The report consists of a literature study and identification of two different unit processes.
The literature study consists of a thorough search of some relevant periodicals, and the result is presented as a collection of abstracts of articles, treating dynamic aspects of waste water treatment te
Image registration of X-ray images is used to correctly align the patient before the cancer tumour is treated with sets of high dose X-ray radiation. Before the first treatment, a simulated X-ray image is taken showing the best possible localisation of the tumour. From then on, after each of the radiation treatments of the tumour, a low dose of the X-ray theurapeutic radiation is used to take an i
This ‘Automatic Test System (ATS) for Network Servers’ Master Thesis project was carried out from September 2000 till March 2001 at Axis Communication AB, Lund. The project was to build a common test system platform for all future tests of Axis network servers’ products. Thus, overcoming the current practice of costly dedicated test system development for individual products. The project is a gra
Modern gas turbines use lean premixed combustion to achieve the best compromise between emissions and efficiency. This type of combustion is very sensitive to thermoacoustic instabilities causing high pressure sound waves. One reason for these intense pressure fluctuations is the flame is acting as source of sound, that is placed in an acoustic resonator accumulating acoustic energy. Due to the re
This master thesis project has been performed in cooperation with TAC, a building automation company in Malmö and the Department of Automatic Control at LTH. TAC has experienced problems for some time with their PID controllers. This master thesis has therefore investigated the use of PID control at TAC, the problems with the existing controllers. The thesis also describes a new PID controller tha
Clarifying the mechanisms maintaining atrial activity during atrial fibrillation (AF), still remains as a relevant topic. The purpose of this master thesis is to apply correlation analysis and system identification methods to study spatial and temporal propagation of atrial activation along coronary sinus (situated in the posterior left part of the heart, in the groove between left atrium and left
