In this paper we discuss the problem of finding a suitable filter used as prefilter at digital Kalman filtering. The process is described by a stochastic state model. Two different filters are analyzed: a low-pass filter and a mean value filter. Especially we examine optimal choices of the parameters of the filters i.e. optimal integration area in the mean value filter and optimal time constant in

I detta examensarbete behandlas numeriska algoritmer för att tranformera systemet S(A,B,C,D) på observerbar och styrbar kanonisk form. Programmen kan även användas för att beräkna koefficienterna i överföringsfunktionen för S(A,B,C,D).

This thesis presents a study of how a 24 GHz radar can be used to measure traffic. The focus is on the software of the radar, highlighting the algorithms used in the radar measurements. The Frequency Modulated Continuous Wave (FMCW) and Frequency Shift Keying (FSK) algorithms are studied, and the FSK algorithm is also implemented on a test setup with results which show that the radar can be used t

Power electronics is today used almost everywhere. The development of power electronics hardware is fast, pushing the performance limits. Still the conventional two level converter is the most commonly used converter on the market. The output voltage of the conventional two level converter is generated as pulses. The pulses are generated with semiconductor switches with short switching times to k

I denna kandidatuppsats genomförs en kvalitativ fallstudie av Jodelhotet som ledde till nedstängningen av Lunds universitet måndagen den 12 oktober 2015. Min teoretiska utgångspunkt grundas i Beck (1998), Bauman (2001) och Giddens (1996, 1997) tankar om senmodernitetens tillstånd som i en tid där samhällets risker och hot förstärks samtidigt som individualiseringen gör det allt svårare att nå geme

A project at ABB CRC in Västerås aims at investigating the use of an MPC algorithm as a control module in 800xA. For users to interact with such a controller, faceplates need to be designed. This report describes the process, and results of designing such faceplates using among other the ABB Graphics Builder application. The challenge with the design work was mainly to create new and unique compon

Core Issue: Developing and maintaining industrial automation systems requires a lot of coordination of programming code. To support this task a configuration management system can be used but many companies of today find it hard to select a system that suites them best. Purpose: The purpose of this thesis is to examine various configuration management systems and evaluate them according to the nee

Friction is present in all mechanical systems and causes a wide range of problems for control. The development of model-based strategies accounting for Friction in the designed control has been a vast area of Research since these last decades. A promising Friction model which received a lot of attention these last years is the so-called LuGre model, which originates in the collaboration between th

In many applications involving mobile devices it is essential to track their position. Moreover, it is usually desired, to perform this localization in a distributed fashion without using a central processing unit. In this case, only distance measurements to reference nodes which are in range can be utilized. It is proposed in this thesis to also use distance measurements to other moving objects,

This Master's Thesis presents the development of methods for improved GPS navigation on Wayfinder Navigator, a mobile phone based navigation system developed by Wayfinder Systems. Focus has been put on off track detection, i.e. to detect a user diverging from the route given by the navigation system, and how the GPS position is presented to the user by the application. Improving off track dete