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Improved Scheduling...
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Cervin, AntonLund University,Lunds universitet,Institutionen för reglerteknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Automatic Control,Departments at LTH,Faculty of Engineering, LTH
(author)
Improved Scheduling of Control Tasks
- Article/chapterEnglish1999
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1999
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LIBRIS-ID:oai:lup.lub.lu.se:5f1cbe59-07ca-4690-a8d5-d9bad19a8a99
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https://lup.lub.lu.se/record/8516747URI
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Language:English
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Summary in:English
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Subject category:kon swepub-publicationtype
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Subject category:ref swepub-contenttype
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The paper considers the implementation of digital controllers as real-time tasks in priority-preemptive systems. The performance of a digital feedback control system depends critically on the timing of its sampling and control actions. It is desirable to minimize the computational delay in the controller, as well as the sampling jitter and the control jitter. It is shown that by scheduling the two main parts of a control algorithm as separate tasks, the computational delay can often be reduced significantly. A heuristic method for assigning deadlines to the parts is presented. Further modifications are given to reduce the jitter and to facilitate delay compensation. The result is improved control performance under maintained schedulability.
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Institutionen för reglerteknikInstitutioner vid LTH
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