In order to simulate Internet environment in Ethernet, time delay is divided into constant delay and random sample period considering datagram loss.

• 为了能在局域网中模拟因特网的网络环境,文章根据基于TCP/IP的远程控制系统中存在延时和延时不确定的特点,提出了将网络延时分为固定延时和采样周期波动的随机延时,同时考虑数据报的丢失。