Fuzzy feedback scheduling of resource constrained networked control system
Kun Li · Dianji yu kongzhi xuebao · 2013
For a multi-loop resource constrained networked control system,a fuzzy dynamical scheduling method is presented.First different weight coefficients of the control loop was given through a quadratic function mapping dynamic weight adjustment strategy.Then considering the change of output and error rate in the system,an improved fuzzy feedback priority scheduling strategy was proposed and a fuzzy feedback scheduler was designed;the priority of each control loop was adjusted dynamically.Finally,TrueTime toolbox was used to model the networked control system which contains dynamic weight adjustment fuzzy feedback scheduling,and it was compared with earliest deadline first(EDF) and fixed weight fuzzy feedback scheduling method.The simulation results show that the method in the paper provides a smaller time-delay and better control performance under the same network bandwidth usage.