DocumentCode :
702297
Title :
Adaptive mode assignment in performance-critical cyber-physical systems
Author :
Zhaohui Yuan ; Rong Zhu ; Yiqin Cao ; Guifen Jiang
Author_Institution :
East China Jiaotong Univ., Nanchang, China
fYear :
2015
fDate :
2-4 March 2015
Firstpage :
384
Lastpage :
391
Abstract :
Distributed cyber-physical systems(CPS) deployed in performance-critical applications are imposed stringent constraints such as the real-time requirement and energy consumption budget. However, the performance of CPS is inevitably undermined by various physical uncertainties, which include stochastic environment noise and dynamics of the physical phenomenon. Both of those uncertainties might lead to overload and the power overconsumption as task execution times are unpredictable. While recent feedback control scheduling have shown promise to meet the end-to-end deadlines by adaptively adjusting the task loading rate, little work has focused on both the system service rate and the CPU execution modes as a whole to minimize the system power consumption. This paper presents a feedback control based algorithm that adaptively maintains desired task service rate for real-time requirement while minimizes the power consumption by assigning proper execution modes on processor for each node. The theoretic analysis and numerous simulations demonstrate that the proposed scheme can provide robust real-time guarantees and reduce the power consumption when the task workload vary significantly at run-time.
Keywords :
feedback; noise (working environment); numerical analysis; power aware computing; power consumption; processor scheduling; CPS; CPU execution mode; adaptive mode assignment; distributed cyber-physical system; energy consumption budget; feedback control based algorithm; feedback control scheduling; numerous simulation; performance-critical application; performance-critical cyber-physical system; physical uncertainty; power overconsumption; proper execution mode; real-time requirement; robust real-time guarantee; stochastic environment noise; stringent constraint; system power consumption; system service rate; task execution times; task loading rate; task service rate; theoretic analysis; Cameras; Energy consumption; Feedback control; Loading; Power demand; Real-time systems; Stability analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Quality Electronic Design (ISQED), 2015 16th International Symposium on
Conference_Location :
Santa Clara, CA
Print_ISBN :
978-1-4799-7580-8
Type :
conf
DOI :
10.1109/ISQED.2015.7085456
Filename :
7085456
Link To Document :
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