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A design algorithm ...
A design algorithm using external perturbation to improve Iterative Feedback Tuning convergence
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Huusom, J. K. (author)
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- Hjalmarsson, Håkan, 1962- (author)
- KTH,Reglerteknik,ACCESS Linnaeus Centre,System Identification Group
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Poulsen, N. K. (author)
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Jorgensen, S. B. (author)
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(creator_code:org_t)
- Elsevier BV, 2011
- 2011
- English.
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In: Automatica. - : Elsevier BV. - 0005-1098. ; 47:12, s. 2665-2670
- Related links:
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https://backend.orbi...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Iterative Feedback Tuning constitutes an attractive control loop tuning method for processes in the absence of process insight. It is a purely data driven approach for optimization of the loop performance. The standard formulation ensures an unbiased estimate of the loop performance cost function gradient, which is used in a search algorithm for minimizing the performance cost. A slow rate of convergence of the tuning method is often experienced when tuning for disturbance rejection. This is due to a poor signal to noise ratio in the process data. A method is proposed for increasing the data information content by introducing an optimal perturbation signal in the tuning algorithm. The theoretical analysis is supported by a simulation example where the proposed method is compared to an existing method for acceleration of the convergence by use of optimal prefilters.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
Keyword
- Controller tuning
- Direct tuning
- Iterative Feedback Tuning
- Iterative schemes
- Control loop
- Data informations
- Data-driven approach
- External perturbations
- Loop performance
- Optimal perturbation
- Performance costs
- Prefilters
- Process data
- Rate of convergence
- Search Algorithms
- Simulation example
- Tuning algorithm
- Tuning method
- Unbiased estimates
- Algorithms
- Approximation theory
- Cost benefit analysis
- Disturbance rejection
- Optimization
- Signal to noise ratio
- Time varying networks
- Convergence of numerical methods
- SRA - ICT
- SRA - Informations- och kommunikationsteknik
Publication and Content Type
- ref (subject category)
- art (subject category)
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