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Improved Scheduling of Control Tasks

In English

Författare

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.

Publiceringsår

1999

Språk

Engelska

Dokumenttyp

Konferensbidrag

Ämne

  • Control Engineering

Conference name

11th Euromicro Conference on Real-Time Systems

Conference date

1999-06-09

Conference place

York, United Kingdom

Status

Published