Improved Scheduling of Control Tasks
Author
Summary, in English
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.
Department/s
Publishing year
1999
Language
English
Full text
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Document type
Conference paper
Topic
- Control Engineering
Conference name
11th Euromicro Conference on Real-Time Systems
Conference date
1999-06-09
Conference place
York, United Kingdom
Status
Published