Energy and Dependability Enhancement by Dynamic Actuator Derating in Cyber-Physical Systems
Energy and Dependability Enhancement by Dynamic Actuator Derating in Cyber-Physical Systems
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DOI：
10.1109/igcc.2018.8752122
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发表时间：
2018-10
期刊：
影响因子：
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通讯作者：
Shikang Xu;I. Koren;C. M. Krishna
中科院分区：
文献类型：
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作者：
Shikang Xu;I. Koren;C. M. Krishna
近年来，网络物理系统（CPS）的网络部分的能量消耗引起了相当大的关注。增加的能量消耗导致对处理器的热损伤增加，需要更频繁地更换;并且在许多应用中，还需要增加能量存储容量。容错贡献了CPS中的网络能量消耗的很大一部分，因为它是使用冗余计算来实现的。人为地限制最大致动器输出）以减少所需的冗余。通过有针对性地使用容错，我们能够在不降低可靠性的情况下显著降低计算机的能量消耗和热应力。这对处理器寿命和所需的能量存储具有有益的影响。
The energy consumption of the cyber part of cyber-physical systems (CPSs) has attracted considerable attention in recent years. Increased energy consumption results in increased thermal damage to the processors requiring more frequent replacements; and in many applications, it also requires increased energy storage capacity. Fault tolerance contributes to a large fraction of the cyber energy consumption in CPS since it is implemented using redundant computations.This paper studies the use of dynamic actuator derating (i.e., artificially limiting the maximum actuator output) for reducing the required redundancy. By targeting the use of fault-tolerance, we are able to obtain significant reductions in computer energy expenditure and thermal stress without lowering the reliability. This has beneficial effects on processor lifetime and required energy storage.