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When controlling the drum water level of marine boilers the rolling of the ship may cause problems. The drum water level gets a sinusoidal disturbance, which causes a disturbance of the feed water control valve. This disturbance may proceed through the feed water pump to other steam consumers. The rolling inflates other boiler parameters too. It will be shown that stability problems may appear if
The main part of this work consists of the developing of software support. The lack of such support is the main problem with micro computers, independent of the hardware realization. The cross assembler developed, having a PDP 11 as host computer and KMV-version 2 as target computer, will be a great help when writing assembler programs, while the macro assembler raises the language to a higher lev
Modelica-TM is an object-oriented language for modeling physical systems that was designed in the last years with the goal to become a standardized multi-domain modeling language. This paper describes a robust model for homogenous and inhomogenous two phase flows with dynamic or static slip correlation. It was developed in the context of developing a Modelica base library for thermo-hydraulic appl
In the presence if poor excitation and abrupt changes of a time-varying system the Recursive least square (RLS) with forgetting factor is not able to track the parameters in a suitable way. The purpose of this thesis is to investigate different kinds of proposals of algorithms to deal with the phenomenons arising, such as estimator windup or too slow convergence of the estimations. Attention is al
