网络环境下实时控制系统的设计与调度

总结传统的数字控制系统以及集散控制系统中普遍采用的计算延迟补偿方法,提出两类改善网络化控制系统性能的设计方法,即优化网络调度与改善控制器性能的方法。进一步指出,网络调度与控制器协同设计的方法可以在保证系统总体性能优化的同时,降低对网络服务和系统控制各自过于苛刻的要求,降低系统的总成本。

Design and Scheduling of Real-time Networked Control Systems

Considering that the time-varying delays induced by the networks can degenerate system stability and performance,the compensation techniques for computational delay in the traditional digital & distributed control systems are summarized.Two commonly design approaches adopted in the networked control systems are given,i.e.optimizing network scheduling and improving controller performance.It is shown that co-design of control and scheduling is more promising because it can decrease the too rigid requirements for network services and system controllers,at the same time achieve the best possible system performance at totally low costs.