分散控制系统SOE模件时间累计误差消除方法  

An approach for eliminating accumulative error of SOE module in DCS

作　　者：吴胜华[1] 田海波[1] 

机构地区：[1]国电南京自动化股份有限公司研究院,江苏南京210003

出　　处：《华电技术》2012年第1期28-29,77,共2页HUADIAN TECHNOLOGY

摘　　要：由于时钟振荡器的脉冲受环境温度、激励电平等不稳定因素的影响,时钟难免存在误差,因程序复杂,这种影响是持续随机的,短时很难消除。提出了一个实际可行的分散控制系统事件顺序记录模件模拟时钟累计误差的校正方案,并进行了详细分析,该方案能够显著减小累积误差,提高精度。Due to the influence of the temperature,the excitation level and other instability factors on the frequency of the clock oscillator,it is difficult to avoid the error of the system clock.Because of the complexity of the program,this influence is continuous and random;and it is difficult to eliminate this influence in short time.A realistic corrective method for the accumulative error of analog clock of SOE module in DCS was put forward and analyzed in detail.The method can reduce the accumulative error and enhance the accuracy significantly.

关 键 词：分散控制系统 事件顺序记录 累计误差 精度 

分 类 号：TM762[电气工程—电力系统及自动化]