Optimal Output Regulation for Square, Over-Actuated and Under-Actuated Linear Systems

This paper considers two different problems in trajectory tracking control for linear systems. First, if the control is not unique which is most input energy efficient. Second, if exact tracking is infeasible which control performs most accurately. These are typical challenges for over-actuated systems and for under-actuated systems, respectively. We formulate both goals as optimal output regulation problems. Then we contribute two new sets of regulator equations to output regulation theory that provide the desired solutions. A thorough study indicates solvability and uniqueness under weak assumptions. E.g., we can always determine the solution of the classical regulator equations that is most input energy efficient. This is of great value if there are infinitely many solutions. We derive our results by a linear quadratic tracking approach and establish a useful link to output regulation theory.Comment: 8 pages, 0 figures, final version to appear in IEEE Transactions on Automatic Contro

THE POLITICAL CLIMATE FOR FOOD DISTRIBUTION IN THE 1970'S

Inflation for the first half of the decade, technological revolution in food retailing the second half.Marketing,

Generating Compact Geometric Track-Maps for Train Positioning Applications

In this paper, we present a method to generate compact geometric track-maps for train-borne localization applications. Therefore, we first give a brief overview on the purpose of track maps in train-positioning applications. It becomes apparent that there are hardly any adequate methods to generate suitable geometric track-maps. This is why we present a novel map generation procedure. It uses an optimization formulation to find the continuous sequence of track geometries that fits the available measurement data best. The optimization is initialized with the results from a localization filter developed in our previous work. The localization filter also provides the required information for shape identification and measurement association. The presented approach will be evaluated on simulated data as well as on real measurements

Risk Management in Petroleum Industry Construction Projects in Malaysia

This research is conducted with main purpose of recognizing the most occurring risk factors in construction projects of petroleum industry in Malaysia. It is also done to emphasize the importance of risk management and give some suggestion to improve it based on the analysis of the current practice in the country. At present, stakeholders worldwide are calling for enhanced risk management in petroleum industry activities due to the fact that it needs enormous number of investment money as well as extensive period of time to perform its highly risk operations. Moreover Petronas as an important contributor of Malaysia economy and as company which intends to be a leading global player in the business shall keep improving its activities in term of quality and efficiency, thus its risk management as well. Risks to be identified are the ones that may exist in the projects owned by petroleum operator company, Petronas. Therefore survey is conducted to attain necessary data for the study using questionnaires distributed to the upstream subsidiary company of Petronas and the contractor partners working in Petronas’ downstream project in Malaysia. Picking out the major project risks occurring in the country and an analysis upon them are carried out based on the rank. These are then followed by developing possible suggestions to mitigate the analysed risks and its improvement measures. The most often occurring risk factors have been identified based on the survey tests performed in the study, they are: bureaucratic government system & long project approval procedure, design changes, late internal approval process from the owner, delay in signing contract, inadequate coordination among contractors, inefficient & poor performance of constructors and lastly the increase of equipment cost

Für eine neue Strategie von Handel und Entwicklung - Zur Agenda der dritten WTO-Konferenz

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Tumores uroteliais localizados no trato urinário superior: análise retrospectiva

Trabalho de Conclusão de Curso - Universidade Federal de Santa Catarina. Curso de Medicina. Dapartamento de Clínica Cirúrgica