摘要： 端到端时延是影响基于Internet网络控制系统(NCS)稳定性的一个重要因素。该文通过OPNET建模仿真，分析了系统的端到端时延特征、时延组成及时延瓶颈。讨论了不同的数据包大小对端到端时延的影响及其原因，把该时延用于一个NCS仿真实例，分析了其对系统稳定性的影响。在NCS的设计过程中，明确端到端时延特征有助于提高系统的稳定性。
关键词:
网络控制系统,
端到端时延,
OPNET,
不确定性,
稳定性
Abstract: End-to-end delay is a basic element that affects the stability of Internet-based networked control system(NCS). This paper presents network model and NCS model, analyzes the characteristics, the components and the bottleneck of the end-to-end delay based on the OPNET simulation results, and studies the relationship between the data packet size and delay. A NCS instance is modeled to examine the affection of end-to-end delay on the stability of NCS. When designing a NCS, grasping the end-to-end delay is helpful to enhance the stability of the system.
Key words:
networked control systems (NCS),
end-to-end delay,
OPNET,
uncertainty,
stability
中图分类号:
邬春学;韩文冬. 基于Internet的网络控制系统端到端时延分析[J]. 计算机工程, 2007, 33(22): 158-160.
WU Chun-xue; HAN Wen-dong. End-to-end Delay Analysis of Internet-based Networked Control Systems[J]. Computer Engineering, 2007, 33(22): 158-160.