Kalibrierung eines Dosisleistungsmesssystems für den Einsatz in gepulsten Strahlungsfeldern

Ein vom Institut für Kern‐ und Teilchenphysik der Technischen Universität Dresden entwickelter Prototyp eines Ortsdosisleistungsmessgeräts muss zur Weiterentwicklung und Verwendung kalibriert und geprüft werden. In der vorliegenden Arbeit werden für den Prototyp in einem kontinuierlichen Strahlungsfeld eine Kalibrierfunktion und Kalibrierungsparameter für die einzelnen Detektoren des Messsystems bestimmt. Mithilfe dieser wird im Anschluss Energiedosismessung auf der Grundlage der im Szintillationsmaterial deponierten Energie, durchgeführt. Außerdem wird das Messsystem auf Stabilität und den Einsatz in einem gepulsten Strahlungsfeld überprüft.The prototype of an area dose rate measuring device developed by the Institute for Nuclear and Particle Physics of the Technical University of Dresden must be calibrated and tested for further development and use. In this thesis, dose calibration parameters are determined for the individual detectors of the prototype in a continuous radiation field. The calibration is then used to measure the absorbed dose based on the energy deposited in the scintillation material

Regression Filtration with Resetting to Provide Exponential Convergence of MRAC for Plants with Jump Change of Unknown Parameters

This paper proposes a new method to provide the exponential convergence of both the parameter and tracking errors of the composite adaptive control system without the requirement of the regressor persistent excitation (PE). Instead, the composite adaptation law obtained in this paper requires the regressor to be finitely exciting (FE) to guarantee the above-mentioned properties. Unlike known solutions, not only does it relax the PE requirement, but also it functions effectively under the condition of a jump change of the plant uncertainty parameters. To derive such an adaptation law, an integral filter of regressor with damping and resetting is proposed. It provides the required properties of the control system, and its output signal is bounded even when its input is subjected to noise and disturbances. A rigorous analytical proof of all mentioned properties of the developed adaptation law is presented. Such law is compared with the known composite ones relaxing the PE requirement. The wing-rock problem is used for the modeling of the developed composite MRAC system. The obtained results fully support the theoretical analysis and demonstrate the advantages of the proposed method.Comment: 12 pages, 3 figure

THE STUDY OF HYPER ELASTIC MATERIAL CHARACTERISTICS IN CASE OF THIN ROD STRUCTURE CALCULATION

The article investigates the deformation hyper elastic material characteristics, i.e. rubber, and determines a mathematical model to calculate the characteristics of test material structure