挣值管理

EVM 挣值管理 earned value management

ES 挣得进度 earned schedule

AT 实际时间 actual time

PV 计划价值

EV 挣值

AC 实际成本

SV 进度偏差 = EV-PV

CV 成本偏差 = EV-AC

SPI 进度绩效指数 schedule performance index = EV/PV

CPI 成本绩效指数 =EV/AC

EAC 完工估算 estimate at completion

BAC 完工预算 budget at completion

VAC 完工偏差 variance at cost = BAC-EAC

ETC 完工尚需估算 estimate to completion