A novel search algorithm for critical nodes of highway electromechanical maintenance system

The highway electromechanical system is an important support to ensure normal operation of the highway. Currently, the cyclical and integral maintenance strategy was mainly adopted. In order to improve the equipment utilization and economic performance, a key equipment search algorithm based on complex network structure is presented in this paper, which gives a new way with differentiation for highway electromechanical maintenance. Based on the topological structure of mechanical and electrical system, the centrality, closeness centrality and distance centrality is combined as effective indicators of critical nodes. Moreover, in order to measure the topology of network and importance of neighboring nodes, mutual information of nodes in networks is calculated via the Markov chain interaction algorithm. By analysis on this project, different conditions lead to little difference of the research result, but acquire the same effect for critical nodes analysis. This paper proposes a new method to search the critical nodes in electromechanical system from the perspective of complex network, which provides a new theoretical basis for the reasonable design of highway electromechanical maintenance.