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Undersökning av regulatorer for normalaccelerationen hos ett flygplan

This work is dealing with airplane control. The work is based on the JACC conference from 1970, where the time domain specifications on the step response of the normal acceleration n^z (perpendicular to the longitudinal direction of the airplane) and its derivative are given, so that all step responses shall entirely lie within the specifications with a probability of at least 85%. The system is

Nivåreglering av ångpanna i turbintanker

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

Programmeringsarbete på Intel 3000

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

Modelling of Two-Phase Flows with Modelica

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