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This paper focuses on the single state feedback stabilization problem of uni ed chaotic system and circuit implementation. Some stabilization conditions will be derived via the single state feedback control scheme. The robust performance of controlled uni ed chaotic systems with uncertain parameter will be investigated based on maximum and minimum analysis of uncertain parameter, the robust controller which only requires information of a state of the system is proposed and the controller is linear. Both the uni ed chaotic system and the designed controller are synthesized and implemented by an analog electronic circuit which is simpler because only three variable resistors are required to be adjusted. The numerical simulation and control in MATLAB/Simulink is then provided to show the e ectiveness and feasibility of the proposed method which is robust against some uncertainties. The results presented in this paper improve and generalize the corresponding results of recent works.

In street lighting system, the light pole controllers were used to monitoring and control each street light. The controller nodes were installed at each lighting pole and make up a network with RTUs. In this paper, a randomly forwarding routing strategy was proposed based on the controller network features. The controller nodes were divided many clusters according to the substation power scope. In one cluster, the controller nodes topology is mainly star structure. When a controller node received a packet, it randomly delays a period of time and decides forwarding packet instead of immediately forwarding. The decision is based on the packet propagation direction and other nodes whether sending or not. The randomly forwarding routing protocol were simulated in OMNeT++ environment and compared with the flooding protocol. The results show that the delay of proposed protocol is lower than that of flooding. The proposed protocol also has some special features such as simple, not need to maintain net topology and complex path discovery algorithms.