| Networked control system was widely used because of many advantages.However,the intervention of network brought more and more problems,such as network induced delay,limited bandwidth of communication channel,and so on.The network system based on event-triggered-transmission-scheme could effectively save the use of network bandwidth.Aiming at different network induced constraints,event-triggeredtransmission-scheme was introduced into networked control systems and corresponding controller design methods were proposed.The work contents are as follows:1)Aiming at the problem of actuator failure and system uncertainty,the control of networked system under event-triggered was studied.Strict dissipation performance was added to ensure the stability of the system in the presence of external disturbances.The reciprocal convex combination,Bessel-Legendre inequality and convex combination method were used to deal with nonlinear terms.The stability criterion and controller design scheme are proposed.The feasibility of designing non-fragile controller is verified by example simulations.2)For the influence of external interference and cyber attack,bernoulli distribution variable was used to represent the presence or absence of cyber attack.Extended dissipation performance was used to ensure system stability.Based on the improved model,two-sided functional was established.The stability criterion based on Lyapunov stability theory was obtained.The controller is obtained when the system is subjected to cyber attack.The effectiveness of the proposed method is proved by numerical simulations.3)Aiming at the uncertainty in the controller,the non-fragile control of networked systems based on event-triggered was studied under the limitation of system transmission delay.A Lyapunov functional dependent on state information and input time delay was designed.MATLAB was used to solve the matrix inequality.The results are less conservative,and the gain of the non-fragile controller is obtained.Finally,numerical examples and simulations are used to prove the feasibility of the scheme.Figure 21;Table 3;Reference 67... |
