A switching control method for networked control systems based on modal dependence of delay and packet loss

Abstract

A network control system switching control method based on time delay and packet loss modal dependence, step 1: establishing a state space equation of the network control system, analyzing the influence of time delay and packet loss on the dynamic performance of the network control system in a sampling period; step Two: Introduce effective sampling time points to establish a comprehensive state-space model of the networked control system; Step three: Transform the closed-loop networked control system model established in step two into the switching control of the networked control system that can include both stable subsystems and unstable subsystems Model; Step 4: Design and implement a switching controller based on the modal dependence of the network control system that allows the average dwell time based on delay and packet loss by using the multi-Lyapunov function method, which ensures that the network control system is in different time delays and packet loss The system is stable under certain conditions; the present invention adopts a loop algorithm to solve the controller gain LMI matrix inequality, so as to ensure the stability of the network control system under the condition of random time delay and packet loss.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a switching control method of a network control system based on delay and packet loss mode dependence. Background technique [0002] With the organic integration and in-depth cooperation of 3C (Computing, Communication, Control) technologies, the traditional point-to-point control system structure can no longer meet the increasingly complex multi-dimensional and complex system control requirements around the network and physical environment. The common theories and key technologies of real-time fast perception, dynamic collaborative control, and intelligent data information services have been widely used in robots, space operations, remote surgery, smart grids, and high-performance automotive operating systems. Network nodes such as controllers, sensors, and actuators are based on cross-system, cross-platform interconnection, intercommunication, and interoperability to ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of network control system dynamic characteristic changes and system instability caused by uncertain network induced factors delay and packet loss, the purpose of the present invention is to provide a network control system switching control based on delay and packet loss modal dependence method, considering all possible network conditions combined with the grid discretization method to discretize the uncertain delay and packet loss into a finite set, and give a better comprehensive description of the uncertain network induced factors on the network control The modeling method of system dynamic performance impact, taking uncertain delay and packet loss as uncertain switching events on the controlled object, discretizes the network control system into a switching system including stable subsystems and unstable subsystems; based on multiple The Lyapunov function method provides the design method and implementation method of the network control system based on the modal dependence of delay and packet loss, which ensures the stability of the network control system under different delay and packet loss conditions.

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