1引言...............................................................................................................................................21.1编写目的.................................................................................................................................21.2背景.........................................................................................................................................21.3定义.........................................................................................................................................21.4参考资料.................................................................................................................................22任务概述.......................................................................................................................................32.1目标.........................................................................................................................................32.2用户的特点.............................................................................................................................32.3假定和约束.............................................................................................错误!未定义书签。3需求规定.......................................................................................................................................33.1对功能的规定.........................................................................................................................33.2对性能的规定.........................................................................................................................53.2.1精度..................................................................................................................................53.2.2时间特性要求..................................................................................................................53.2.3灵活性..............................................................................................错误!未定义书签。3.3输人输出要求.........................................................................................................................53.4数据管理能力要求.................................................................................................................63.5故障处理要求.........................................................................................错误!未定义书签。3.6其他专门要求.........................................................................................................................64运行环境规定...............................................................................................................................64.1设备.........................................................................................................................................64.2支持软件.................................................................................................................................64.3接口.........................................................................................................................................64.4控制............................................................................................................................................
