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Studie av regulatorer för elektrohydauliska lägesservon

Göransson, Göran (1988) In MSc Theses
Department of Automatic Control
Abstract
The purpose of this thesis has been to study different types of control strategies for an Electrohydraulic position servo in a Fuel metering valve. The Servo needs a high accuracy and fast response controller. Unlinearlities cause the system dynamics to vary with different operating conditions. A mathematical model implemented in the simulation tool ACSL is used in design and analysis. The System is analyzed and the existing P-controller is found to be insufficient in accuracy. Design and analysis of analog PID-controllers and lead-lag filters are described and solutions to avoid reset windup and reduce sensitivity for variation in the system dynamic are proposed. Two analog controllers based on a PID-controller and a lead-lag filter... (More)
The purpose of this thesis has been to study different types of control strategies for an Electrohydraulic position servo in a Fuel metering valve. The Servo needs a high accuracy and fast response controller. Unlinearlities cause the system dynamics to vary with different operating conditions. A mathematical model implemented in the simulation tool ACSL is used in design and analysis. The System is analyzed and the existing P-controller is found to be insufficient in accuracy. Design and analysis of analog PID-controllers and lead-lag filters are described and solutions to avoid reset windup and reduce sensitivity for variation in the system dynamic are proposed. Two analog controllers based on a PID-controller and a lead-lag filter fulfill the performance specifications. Further a discussion is made over possibilities and difficulties with discrete controllers and methods based on a combination of analog and discrete technics. (Less)
Please use this url to cite or link to this publication:
author
Göransson, Göran
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
publication/series
MSc Theses
report number
TFRT-5388
ISSN
0280-5316
language
Swedish
id
8849426
date added to LUP
2016-03-26 12:33:52
date last changed
2016-03-26 12:33:52
@misc{8849426,
  abstract     = {The purpose of this thesis has been to study different types of control strategies for an Electrohydraulic position servo in a Fuel metering valve. The Servo needs a high accuracy and fast response controller. Unlinearlities cause the system dynamics to vary with different operating conditions. A mathematical model implemented in the simulation tool ACSL is used in design and analysis. The System is analyzed and the existing P-controller is found to be insufficient in accuracy. Design and analysis of analog PID-controllers and lead-lag filters are described and solutions to avoid reset windup and reduce sensitivity for variation in the system dynamic are proposed. Two analog controllers based on a PID-controller and a lead-lag filter fulfill the performance specifications. Further a discussion is made over possibilities and difficulties with discrete controllers and methods based on a combination of analog and discrete technics.},
  author       = {Göransson, Göran},
  issn         = {0280-5316},
  language     = {swe},
  note         = {Student Paper},
  series       = {MSc Theses},
  title        = {Studie av regulatorer för elektrohydauliska lägesservon},
  year         = {1988},
}