根据实时数据库中历史数据的特点，设计了一种应用于过程控制系统实时数据库中的历史数据压缩算法，实现了对历史数据的无损快速压缩-Historical data in the database in real time to the characteristics, design a process control system used in real-time database of historical data compression algorithm, realized the historical data on nondestructive and rapid compression