Design Of Network Control Event Triggered By Communication Delay And Its Application In Quadrotor Flight Control System

With the widespread use of computer communication networks and the continuous development of information processing and communication technologies,more and more scholars have been concerned about the theory of information integration and control in recent years.Some major progresses have been made in the research of network control systems.However,due to limited network communication bandwidth and resources in network-based control systems,it is necessary to design event-triggered communication mechanisms for the control system in order to reduce unnecessary waste.At the same time,network transmission inevitably has time delay,which is affected by this factor.Event triggered network control system may show worse performance or even instability in some cases.Therefore,considering the influence of communication delay,it is of great theoretical significance and application prospect to study the stability of networked control system and controller design based on event triggering mechanism.In this paper,we consider the influence of communication delay,design a novel event trigger mechanism,study a class of network control system stability analysis and controller design and other issues,and apply the conclusion to the quadrotor flight control system.Specific content includes:First of all,according to the state of the system being measurable or not,the state feedback and the output feedback are respectively used to study the stability of the networked control system and the design of the controller.In the analysis,an improved event triggering mechanism was designed.In addition,functional system not only considers as much system information as possible,but also introduces adjustable parameters to make full use of the information about the rate of change of delay.Some new integral inequalities are used to consider the information lost in the existing literature,and the conclusion of conservative performance is greatly reduced.Secondly,considering the state of the system,the state feedback and output feedback controller are designed by using the sampled data.The stability of the linear network control system and the design of the controller are studied based on adaptive event trigger mechanism.The designed event triggering mechanism can not only reflect the changes of the controlled system in real time,but also introduce more adjustable quantities,which can reduce the conservativeness of the conclusion effectively while reducing the data transmission.By comparing with the triggering mechanism of conventional events,the scope of application of the conclusion can be greatly expanded.Finally,numerical examples are used to verify the validity and advancement of the conclusion.Finally,the above research results based on state feedback are applied to the model of quadrotor flight control system.The calculation and simulation results show that the research results in this paper have certain application prospects.