Studier av syre-reglering i biologisk avloppsrening

In this report, the dynamics of an aertor of an activated sludge process is studied. Two control strategies for the dissolved oxygen concentration are tested. One contains either a PI-controller or an on-off controller, the other a self-tuning controller. There are two key-parameters in the system, KLa, the total oxygen transfer rate, and OUR, the oxygen uptake rate of the microorganisms in the a

Zeros of sampled systems

Experimentell undersökning av blandningsprocess

Förstudie av programmet SLIRSIM

Experiment med datorstyrd kännande robot

Mätning av banhastighet med korrelationsteknik

Matematiska modeller för simulering av en extruder

Högupplösande färggrafik för operatörskommunikation

Quantum mechanics and non-linear filtering

Pi-algoritmer vid digital reglering

Tredimensionell datorgrafik och animering av industrirobot

Styrning av fiberutläggning

Experiment med en linjär-kvadratisk självinställare : Experiments with a linear-quadratic selftuner

Neutronflödesmätsystem med SPN-detektorer: kompensering för neutronaktiveringseffekter med datoriserad signalbehandling

Methods for automatic tuning of PID regulators

Implementering av DDC-6 reglersystem

A description of the implementation of Direct Digital Control systems at TAIAB (Tour & Andersson Industrial Automation AB), and a study of the problems in such work. Including a technical introduction to the TA 6500/6501, decentralized DCC-systems.

Dimensionering av en multivariabel styrregulator för en robot samt en undersökning av villkor för stabilitetsmarginaler för multivariabla system

Självinställande regulatorer på mikrodator i högnivåspråk

Temperaturreglering med självinställande PID-regulator

A conventional PID-controller is used to investigate some process-models. These are going to be used later to test a self-tuner. Some problems associated to digital PID-algorithms are discussed, and such an algorithm is described and implemented in a computer. A simple way to obtain critical gain and period in a closed-loop situation is described, and used to design a self-tuning PID-controller. F

Optimal inställning av PID-regulatorer med hjälp av förlustfunktionsoptimering

This report treats the adjustment of the parameters of an analogous PID-controller using a search method which optimizes a loss-function. A process model is updated periodically by means of a suitable identification algorithm. The loss-function is minimized by using a search algorithm. This is done by comparing the values of the loss-function for different setting of the parameters forming a verte