A new identification method of networked control system

摘要

Various control strategies achieve results in different aspects of both the industry and academic in recent years due to flexible applications and many other advantages. Although various algorithms have been proposed for networked control systems, most control schemes assume that system model is known ‘a priori’. It is necessary that the control plant in the network system is identified when the model of the actual networked control system is not known. One of the main identification tasks is how to compensate the uncertainty of the system due to network-induced delays and data packet loss. In presented paper, a modified Gram-Schmidt algorithm is applied to confirm the parameters and the model structure. In addition, a discard-packet strategy is developed which takes into account network-induced delays, data packet out-of-order and data packet loss within one framework. Newton linear interpolator is proposed to compensate the lost data in the identifier. Finally, the effectiveness of the proposed scheme is shown by using a numerical example.