Scheduling of Hybrid Battery-Supercapacitor Control Instructions for Longevity in Systems with Power Gating

Sumanta Pyne
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引用次数: 2

Abstract

The in-rush current due to wake-up of power gating (PG) components causes faster discharge of battery. This work introduces an instruction controlled hybrid battery-supercapacitor (B-SC) system for longer battery life in systems with instruction controlled PG. Two instructions have been introduced along with architectural support. The first instruction disconnects the battery from the PG components if the charge in the supercapacitor greater than or equal to the charge required by wake-up of PG components. The other instruction connects the battery to the PG components for recharging the supercapacitor. Disconnecting the battery during wake-up minimizes rate capacity effect (C-rate) for longer battery life. An algorithm is designed to schedule the proposed battery control instructions within a program having PG instructions. The efficacy of the proposed method is evaluated on MiBench and MediaBench benchmark programs. The proposed method reduces C-rate by an average of 14.25% at the cost of average performance loss of 6.87%.
电源门控系统中混合电池-超级电容器寿命控制指令的调度
由于电源门控(PG)组件唤醒而产生的涌流导致电池放电速度加快。本文介绍了一种指令控制的混合电池-超级电容器(B-SC)系统,该系统可以在指令控制的PG系统中延长电池寿命。如果超级电容器中的电荷大于或等于唤醒PG组件所需的电荷,则第一条指令断开电池与PG组件的连接。另一条指令将电池连接到PG组件上,为超级电容器充电。在唤醒过程中断开电池连接可以最大限度地减少速率容量影响(C-rate),从而延长电池寿命。设计了一种算法,用于在具有PG指令的程序中调度所提出的电池控制指令。在MiBench和mediabbench基准程序上对该方法的有效性进行了评估。该方法以平均性能损失6.87%为代价,平均降低了14.25%的c率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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