LAPSE:2020.0082
Published Article
LAPSE:2020.0082
Multiple-Input Single-Output Control for Extending the Steady-State Operating Range—Use of Controllers with Different Setpoints
January 19, 2020
This paper deals with a case when multiple inputs are needed to cover the steady-state operating range. The most common implementation is to use split range control with a single controller. However, this approach has some limitations. In this paper, we use multiple controllers with different setpoints and demonstrate that this structure can be optimal in some cases when the cost of the input can be traded off against the penalty of deviating from the desired setpoint. We describe a procedure to find the optimal setpoint deviations. We illustrate our procedure in a case in which three inputs (cooling and two sources of heating) are used to control the temperature of a room with a PID-based control structure and without the need of online optimization.
Keywords
control structure, optimal operation, parallel control, PID, split range control, valve position control
Suggested Citation
Reyes-Lúa A, Skogestad S. Multiple-Input Single-Output Control for Extending the Steady-State Operating Range—Use of Controllers with Different Setpoints. (2020). LAPSE:2020.0082
Author Affiliations
Reyes-Lúa A: Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 4, 7491 Trondheim, Norway [ORCID]
Skogestad S: Department of Chemical Engineering, Norwegian University of Science and Technology (NTNU), Sem Sælands vei 4, 7491 Trondheim, Norway [ORCID]
Journal Name
Processes
Volume
7
Issue
12
Article Number
E941
Year
2019
Publication Date
2019-12-10
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr7120941, Publication Type: Journal Article
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LAPSE:2020.0082
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doi:10.3390/pr7120941
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Jan 19, 2020
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CC BY 4.0
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[v1] (Original Submission)
Jan 19, 2020
 
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Jan 19, 2020
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https://psecommunity.org/LAPSE:2020.0082
 
Original Submitter
Calvin Tsay
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