Modelling and Simulation of an Industrial Control Loop with Friction
(1994) In MSc ThesesDepartment of Automatic Control
- Abstract
- Modelling of an industrial control loop for concentration control using Omola, an object-oriented modelling language, is described. The major modelling effort has been made to make a complete nonlinear model of the pneumatic positioner-actuator of the control valve in the loop. A library of several friction models has also been developed. These models have been used to describe friction in the control valve. The different friction models have been compared to each other and the effects of various frictional phenomena on the control loop behaviour have been studied. The control loop has been simulated using the OmSim working environment. The simulations show that concentration variations observed during operation of the control loop at a... (More)
- Modelling of an industrial control loop for concentration control using Omola, an object-oriented modelling language, is described. The major modelling effort has been made to make a complete nonlinear model of the pneumatic positioner-actuator of the control valve in the loop. A library of several friction models has also been developed. These models have been used to describe friction in the control valve. The different friction models have been compared to each other and the effects of various frictional phenomena on the control loop behaviour have been studied. The control loop has been simulated using the OmSim working environment. The simulations show that concentration variations observed during operation of the control loop at a paper mill can be caused by friction alone. Possible measures to overcome the control valve problem are studied and a simple way of reducing the problem is proposed. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/8848898
- author
- Eborn, Jonas
- supervisor
- organization
- year
- 1994
- type
- H3 - Professional qualifications (4 Years - )
- subject
- keywords
- friction, modelling, simulation, control valve, process control, pneumatic
- publication/series
- MSc Theses
- report number
- TFRT-5501
- ISSN
- 0280-5316
- language
- English
- id
- 8848898
- date added to LUP
- 2016-03-25 12:12:51
- date last changed
- 2016-03-25 12:12:51
@misc{8848898, abstract = {{Modelling of an industrial control loop for concentration control using Omola, an object-oriented modelling language, is described. The major modelling effort has been made to make a complete nonlinear model of the pneumatic positioner-actuator of the control valve in the loop. A library of several friction models has also been developed. These models have been used to describe friction in the control valve. The different friction models have been compared to each other and the effects of various frictional phenomena on the control loop behaviour have been studied. The control loop has been simulated using the OmSim working environment. The simulations show that concentration variations observed during operation of the control loop at a paper mill can be caused by friction alone. Possible measures to overcome the control valve problem are studied and a simple way of reducing the problem is proposed.}}, author = {{Eborn, Jonas}}, issn = {{0280-5316}}, language = {{eng}}, note = {{Student Paper}}, series = {{MSc Theses}}, title = {{Modelling and Simulation of an Industrial Control Loop with Friction}}, year = {{1994}}, }