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Case study: Interrupt-less servo motor controls for pneumatic pump in safety critical devices

Title
Case study: Interrupt-less servo motor controls for pneumatic pump in safety critical devices
Authors
Park S.
Ewha Authors
박상수
SCOPUS Author ID
박상수scopus
Issue Date
2016
Journal Title
International Journal of Software Engineering and its Applications
ISSN
1738-9984JCR Link
Citation
vol. 10, no. 3, pp. 141 - 148
Keywords
InterruptPneumatic pumpPredictabilitySafety criticalSoftware architecture
Publisher
Science and Engineering Research Support Society
Indexed
SCOPUS scopus
Abstract
Interrupts are often used in safety critical control software, however, a system based on interrupts is difficult to analyze, which increases cost and complexity of software quality assurance, because the behavior may vary depending on the order in which interrupts are detected by the sensors. In the previous work on servo motor controls, an interrupt-driven architecture is successfully converted to the interrupt-less architecture by maintaining time stamps of sensor events. In this paper, interrupt-less servo motor controls for pneumatic pump system in medical devices are evaluated and analyzed in terms of behavior correctness as well as the predictability of the system. Experimental results show negligible differences on the main control variable of servo motor compared to the interrupt-driven controls while it provides better predictability by getting rid of interrupts except an internal timer for periodic handling of time stamps by sensor events including motor, pump pusher plate, and buttons in the user interface. ©2016 SERSC.
DOI
10.14257/ijseia.2016.10.3.13
Appears in Collections:
엘텍공과대학 > 컴퓨터공학과 > Journal papers
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