Network Time-Delay Compensation Based on Narandra Stable Adaptive Control

Abstract

A new delay compensation control algorithm is applied to the networked control system (NCS), in which the characters of random time-delay and packet loss involved. Firstly, the ideal model of networked control system is considered as a reference model, and then the Lyapunov stability theory is used to design an adaptive control algorithm which generates a bounded control input, it is guaranteed that generalized output error is closing to zero. Narandra stability adaptive controller is used in the networked control system, which has many advantages including simple algorithm, less time computing, fast response. The simulation results are shown that the networked control system is well controlled by this method.

State feedback control aware stochastic transmitting latency in cyber-physical power system

“…In the study of NCS, Chen and Liu 6 established an ideal communication model and then used the Lyapunov stability theory to reduce the system’s output error. Dong et al 8 used H ∞ norm constraints and linear matrix inequalities to obtain feedback control gain and system stability criterion.…”

“…Control methods with simplified network models with constant latency or packet loss rate are studied. 6,7 But, a CPPS controlling distributed generation and variable power load is one of the more complex networks and measuring data transmitting with stochastic transmitting latency. Therefore, there are two main difficulties; we proposed (1) to establish a frequency-controlled uncertain state space model of micro-grid, which is more consistent with the actual system considering the observation noise and (2) a controller to solve the micro-grid’s frequency stability problem with stochastic latency disturbance.…”