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Optimal Control Algorithms of Pulsed Accelerating Fields in Superconducting Spoke Cavities in ESS

Einarsson, Arnbjörn and Rajabian, Babak (2012) In ISSN 0280-5316
Department of Automatic Control
Abstract
The aim of this master thesis is to compare two different control algorithms with respect to reference tracking and simulation time for a superconductive cavity in ESS. The two control algorithms are PID and MPC. The most common type of controller is the PID due to its simplicity. However, an increased interest in finding a control algorithm which can handle the reference tracking better than the PID controller, has been searched for better development of computers. The Model predictive control is a more advanced and requires more computer power. In this thesis the comparison is made using first a very simple cavity model and then extending it with Lorentz detuning of the cavity. Both these models are simulated with the two types of... (More)
The aim of this master thesis is to compare two different control algorithms with respect to reference tracking and simulation time for a superconductive cavity in ESS. The two control algorithms are PID and MPC. The most common type of controller is the PID due to its simplicity. However, an increased interest in finding a control algorithm which can handle the reference tracking better than the PID controller, has been searched for better development of computers. The Model predictive control is a more advanced and requires more computer power. In this thesis the comparison is made using first a very simple cavity model and then extending it with Lorentz detuning of the cavity. Both these models are simulated with the two types of control algorithms. The result shows that both PID and MPC can manage the reference tracking well. In both cases, the controlled output is within its margins. However it can be seen that the PID has a faster response to the beam injection into the cavity. Due to the complexity of the MPC, this algorithm has a longer simulation time then PID. Furthermore the MPC calculates the control signal through an optimization problem. (Less)
Please use this url to cite or link to this publication:
author
Einarsson, Arnbjörn and Rajabian, Babak
supervisor
organization
alternative title
Optimala regleralgoritmer av pulserande accelererande fält i supraledande ekerkaviteter i ESS
year
type
H3 - Professional qualifications (4 Years - )
subject
publication/series
ISSN 0280-5316
other publication id
ISRN LUTFD2/TFRT--5905--SE
language
English
additional info
month=June
id
3115719
date added to LUP
2012-09-28 11:03:13
date last changed
2012-09-28 11:18:07
@misc{3115719,
  abstract     = {The aim of this master thesis is to compare two different control algorithms with respect to reference tracking and simulation time for a superconductive cavity in ESS. The two control algorithms are PID and MPC. The most common type of controller is the PID due to its simplicity. However, an increased interest in finding a control algorithm which can handle the reference tracking better than the PID controller, has been searched for better development of computers. The Model predictive control is a more advanced and requires more computer power. In this thesis the comparison is made using first a very simple cavity model and then extending it with Lorentz detuning of the cavity. Both these models are simulated with the two types of control algorithms. The result shows that both PID and MPC can manage the reference tracking well. In both cases, the controlled output is within its margins. However it can be seen that the PID has a faster response to the beam injection into the cavity. Due to the complexity of the MPC, this algorithm has a longer simulation time then PID. Furthermore the MPC calculates the control signal through an optimization problem.},
  author       = {Einarsson, Arnbjörn and Rajabian, Babak},
  language     = {eng},
  note         = {Student Paper},
  series       = {ISSN 0280-5316},
  title        = {Optimal Control Algorithms of Pulsed Accelerating Fields in Superconducting Spoke Cavities in ESS},
  year         = {2012},
}