时延网络控制系统控制方法研究综述

Survey on control methodologies in delay based networked control systems

本文介绍了网络控制系统的基本概念,分析了网络控制系统的优缺点,并主要针对网路控制系统中的时延问题,论述了6种时延网络控制系统控制方法:增广状态离散时间模型法、缓冲队列法、摄动法、随机最优控制方法、鲁棒控制方法、模糊逻辑调节法。本文对6种控制方法各自的特点和适用范围进行了较为详细地讨论,并对各自的优缺点进行了对比分析,对进一步研究适合于时延网络控制系统自身特点的控制方法进行了展望。本文研究的内容是当今控制领域研究的热点问题之一,无论对网络控制系统的研究与应用,还是对网络控制系统中时延问题的解决都具有一定的意义和参考价值。

The research and development on shared data networks have gained increasing attention in recent years. One of the major challenges in networked control systems （NCS） is the effect of network- induced delays. Network-induced delays can degrade the control performance and destabilize the control systems, so developing control methodologies to handle the network-induced delays in NCS is a significant task. This survey paper introduces the basic concept of NCS and analyzes the characteristics of delay-based NCS. Aiming at network-induced delays in NCS, six control methods are surveyed in detail, such as augmented states discrete-time model method, queuing method, perturbation method, stochastic optimal control method, robust control method, fuzzy logic modulation method, and so on. Their own characteristics and applied areas are discussed detailedly. The advantages and disadvantages of each method are analyzed contrastively. Some promising aspects of more suitable control methodologies in delay-based NCS are indicated to study in the future.