Sampled-data-based Robust Stabilization Of A Class Of Systems With A Communication Network

Due to communication networks connect cyber space and physical space,networked control systems(NCSs)can perform many tasks over long distances.Moreover,the signal of NCSs is transmitted over a shared network,which eliminates unnecessary wiring,reduces the complexity of the system,and also reduces the cost of designing and setting up the system.Adding sensors,controllers,or actuators to adjust or update the system can also be done at a lower cost without changing the main architecture of the system.Therefore,compared with the traditional control system,NCSs have incomparable advantages.Motivated by this,this paper addresses the problem of sampled-data-based robust stabilization of a class of systems with a communication network.In this paper,based on Lyapunov function method and inequality technology,the problems of H?control,practical control,observation-dependent practical control and truncation prediction control of NCSs with communication network are studied.The main contributions of this paper are as follows:(1)To address the problem of NCSs with limited bandwidth communication network,two kinds of event-triggered control schemes are designed,which can effectively reduce the communication burden.These schemes can provide support for solving the problem of delay and resource waste caused by transmitted data blocking in the network.(2)To address the problem of NCSs with bounded disturbance,a class of controllers are designed to ensure stability of the system.At the same time,to reduce conservativeness of the controller design,a weaker practical stability criterion of delay systems is proposed.These controllers can provide support for solving the negative effects caused by persistent bounded input disturbances.(3)To reduce the negative influence of the delayed data in NCSs,a kind of practical stability controller with observation data is designed.To address the problem of how to compensate the delay of transmission signal caused by the communication network,a kind of practical stability controller with predictive data is designed.These two kinds of controllers can provide support for solving the validity problem of feedback signal.(4)To address the problem of how to design controller gain with specific form for NCSs,three design algorithms based on LMIs are proposed.