Joint Design Restricted Network Control System Dynamic Scheduling And Control Of Switching Systems Based Approach

In recent years, because of the rapid development of advanced automatic control, communication and computation theory, the use of network control system has spread in many areas of life, therefore, and research about network control system receives more and more attention of many scholars. In this paper, an integrated design scheme of network control and scheduling for NCSs with delay and communication constraints has been proposed which is based on Lyapunov stability theory. A sufficient condition which can assure the asymptotic stability of the system is also given. In this paper, the major job is as below:First, a quantization-dependent controller design method for a class of linear time-invariant NCSs with constant shorter delay and communication constraints is presented. In consideration of delay, communication constraints, and the standard model used in the study of absolute stability problem, this system can be modeled as a class of linear discrete-time switched systems. Furthermore, Lyapunov function which is applied for the analysis of stability is constructed based on three properties of logarithm quantizers, while taking advantage of linear matrix inequality a quantization-dependent feedback controller can be designed.Then, based on dynamic dwell time an integrated design scheme of control and dynamic scheduling for a class of linear time-invariant networked control systems with random delay and communication constraints is proposed. In this paper, the scheduling strategy is combined with dynamic dwell time and a pre-determined periodic sequence. The system can be modeled as a class discrete-time of switched systems with some uncertainties when because of this strategy. Furthermore, based on Lyapunov theory and LMI technology the controller and the dwell time condition which can assure the stability of the system are designed. The scheme not only makes fast convergence of the system, but also can reduce the switching frequency of the system between modes in a certain extent.Again, an integrated design scheme of dynamic scheduling algorithm and observer-based feedback control for a class of linear time-invariant networked control systems with random delay and communication constraints is proposed. In reality, it is difficult to measure all information of the state, thus the scheduling strategy is based on the state information of the observer and the information of control input. Combined with multiple Lyapunov function and linear matrix inequalities, sufficient conditions which assure asymptotic stability of the system are given and also design the observer and controller.Last, for the results of the study, the number examples demonstrate its effectiveness by the True Time and LMI toolbox.