Sökning: "discrete PID-control"

Hittade 2 uppsatser innehållade orden discrete PID-control.

1. 1. Optimal control of clarifier-thickeners

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för systemteknik

   Författare :Sakari Teerikoski; [2017]
   Nyckelord :clarifier; thickener; modelling; simulation; control; cascade control; settling;

   Sammanfattning : A computer model for a general clarifier-thickener has been made and used for comparing different strategies for control of such dewatering units through simulations. The model builds on widely acknowledged theory for modelling clarifier-thickeners - discretizing the settling PDE into a set of ODEs so that concentrations of solids at discrete depths inside the unit become the states of the numerical model - and it was written in the Modelica language using the modelling and simulation environment Dymola. LÄS MER

3. 2. Non-periodic sampling schemes for control applications

   Uppsats för yrkesexamina på avancerad nivå, Signaler och System

   Författare :Tommy Norgren; Jonathan Styrud; [2010]
   Nyckelord :Non-periodic sampling; discrete PID-control; self-triggered; event-triggered; periodic sampling; anti-stick algorithm; adaptive thresholds; boliden plant; iggesund papermill;

   Sammanfattning : In recent years, research in the field of automation has been advancing quickly in the direction of wireless networks of sensors and actuators. This development has introduced a need to reduce the amount of communication. A number of different alternative schemes have been proposed. LÄS MER