Now showing items 31-40 of 69
Solskjerming av vindu
(Master thesis; Mastergradsoppgave, 2018-08-16)
Bakgrunnene for oppgaven er at et hvert byggeprosjekt har behov for klima- og energitekniske beregninger. Solavskjerming kan ha en innvirkende faktor på de klima- og energitekniske beregninger. I dag er det lite krav som stilles til solavskjermingen i byggetekniske forskrifter. Det er derfor ønskelig å forstå hvilke krav som er satt og forstå innvirkningen på solavskjerming i et energiperspektiv.For ...
A Literature Review on Technologies in Future Small-scale Intelligent Manufacturing Systems
(Peer reviewed; Chapter; Bokkapittel, 2018-02-05)
Emergence of global markets forces businesses to become more flexible and adaptive to constantly changing demands and environments. In order to do so, enterprises turn towards application of newest technologies in manufacturing in order to make them intelligent. Since Small and Medium Enterprises play the central role in the domain of European manufacturing, the question arises – based on their ...
Improving the Decision-making of Reverse Logistics Network Design Part I: A MILP Model under Stochastic Environment
(Peer reviewed; Bok; Bokkapittel; Book; Chapter, 2018-02-11)
The study of the network design problems related to reverse supply chain and reverse logistics is of great interest for both academicians and practitioners due to its important role for a sustainable society. However, reverse logistics network design is a complex decision-making problem that involves several interactive factors and faces many uncertainties. Thus, in order to improve the reverse ...
Large-scale Wind Power Integration in Northern Norway
(Master thesis; Mastergradsoppgave, 2018-08-16)
Norway has very high flexibility in energy production since hydropower covers about 95% of yearly energy demand. It is best to have a combination of wind and hydropower and hence it applies perfectly here in Norway. The performance of the wind farm can be significantly enhanced by employing full-capacity converters. The state-of-the-art literature study has been done on Squirrel Cage Induction ...
Collaboration with High-Payload Industrial Robots: Simulation for Safety
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-15)
<p>When operators and industrial robots are sharing the same task, there are multiple factors, which effect if a system is safe for the human operator or not. In general this is solved by introducing Collaborative Robot for cooperation, but what happens when we would extend our already existing production facilities with newer comfort features?</p> <p>In this paper we propose to include industrial ...
Geometric Construction of Some Lehmer Means
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-14)
The main aim of this paper is to contribute to the recently initiated research concerning geometric constructions of means, where the variables are appearing as line segments. The present study shows that all Lehmer means of two variables for integer power k and for k = m 2 , where m is an integer, can be geometrically constructed, that Lehmer means for power k = 0,1 and 2 can be geometrically ...
On Context, Issues, and Pitfalls of Expert Judgement Process in Risk Assessment of Arctic Offshore Installations and Operations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
Decisions to be made in the Arctic offshore operations rely extensively on risk assessment outputs, which require a great deal of historical data and information. However, at the current stage of operating in the Arctic offshore – compared to normal-climate regions – such data is scarce due to the limited industrial activities to date. Lack of data on the probability of the occurrence of an unwanted ...
Dual-quaternion backstepping control for a fully-actuated rigid-body
(Peer reviewed; Book; Chapter, 2018-08-16)
In this paper dual-quaternions are used to model a fully actuated rigid-body. A backstepping-controller that solves the trajectory tracking problem is derived and proved to provide uniform asymptotical stabilization of the error dynamics. Numerical simulations are provided where the controller is compared to existing dual-quaternion tracking controllers and it is shown to have similar performance.
Curvature Continuous Path Generation for UAVs based on Generalized Expo-Rational B-Splines
(Peer reviewed; Book; Chapter, 2018)
This paper proposes a new path-planning algorithm based on GERBS to generate curvature continuous paths. The algorithm blends between a set of local curves generating a global smooth path which also interpolates the midpoint of the curves. Numerical examples are provided which demonstrates the potential of the proposed algorithm.
Introduction of cyber-physical system in robotized press-brake line for metal industry
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-11)
Bin picking is a typical work, which is easy to automate up to a given complexity of the work-piece dimensions. In case of casted work-pieces, the dimensions are most of the time not accurate enough for an industrial robot to be able to pick it up without additional sensors/intelligence. In this paper we introduce a cyber-physical system, where all sensors, actuators, machines and industrial robot ...