Compensation for the Network Control Systems with a Multi-step State Estimate Strategy

Network control system also called NCS is a distributed feedback control system which composed by real-time network. It has the advantages of resource sharing and agility as a low-cost and easy-maintained system. But at the same time, network will also have the problem of time delay which makes difficulties of NCS analysis. The existence of network delay will reduce the performance of network control system, as well as it is inevitable. Therefore it is imperative to its compensation. A multi-step state estimate strategy is recommended in this paper, for compensation network between not only sensor and controller, but also controller and actuator. Buffer delay compensation at actuator receiving terminal is added to improve the performance of NCS. We also analyze system stability in discrete case of a given network system model.