A Scheduler with a Dynamic Priority and its Influence on a Control System 2012-36-0367
In critical real-time computer systems, whether aircraft, automotive and industrial products it is very common the use of a fixed priority scheduler. The fixed priority scheduler has shown a good performance in control applications even in different applications where it was adopted. But nowadays, to go forward with the technology, be it in hardware and software, schedulers with dynamic priority can be a better alternative in certain situations. The present work aims to show that a variable priority scheduler can improve the performance of a control system obtained with a fixed priority scheduler, even when it was bad conditioned. This study is based on a four motor position control system. For this, the study will make use of a specialized simulation tool. In the future, we intend to extend this study to schedulers that use random and sporadic tasks.
Citation: Valdivia, R. and de Oliveira e Souza, M., "A Scheduler with a Dynamic Priority and its Influence on a Control System," SAE Technical Paper 2012-36-0367, 2012, https://doi.org/10.4271/2012-36-0367. Download Citation
Author(s):
Rolf Henry Vargas Valdivia, Marcelo Lopes de Oliveira e Souza
Affiliated:
Friuli Aeroespacial Ltda., Brazilian National Institute of Space Research INPE
Pages: 8
Event:
21st SAE Brasil International Congress and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Control systems
Aircraft
Computer software and hardware
Simulation and modeling
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