Application of discrete event-triggered $${H_\infty }$$ H ∞ control in wireless signal transmission of IOT

With the development of network communication technology, the Internet of things (IOT) has penetrated into all aspects of society. IOT is mainly composed of a large number of equipment terminals. These terminals have mandatory communication ability and can receive or send data at any time through wireless networks, which will generate a huge amount of data. In the traditional control strategy, the terminals perform tasks periodically, which will inevitably lead to a large number of redundant data, not only waste valuable bandwidth resources, but also reduce the control performance of the system considering the network transmission delay. Therefore, a control method based on discrete event-triggered mechanism in wireless signal transmission is proposed. Considering the possible external interference, the disturbance signal is added, and a closed-loop time-delay system model which describes the discrete event-triggered mechanism and the performance of the system simultaneously is established. Then, based on Lyapunov stability theory and linear matrix inequality technique, $${H_\infty }$$ stability criterion and feedback controller design method are obtained. To deal with the nonlinear term, the cone compensation linearization algorithm is used. Finally, a numerical example is given to verify the validity of the conclusions.