Based on the result of the wcet ( worst case execution time ) analysis, assisted with software such as the operating system or the compiler, real-time dynamic voltage scaling makes use of the dynamic variability of the execution time of a program, and effectively reduces the power consumption of real-time system 基于wcet(worstcaseexecutiontime)分析的结果,在操作系统或者编译器等软件的辅助下,实时动态电压调节利用程序运行时间的动态变化,有效地节省了实时系统的能量消耗。