Fault Diagnosis Method of ZPW-2000A Non-insulated Track Circuit Based on Rough Set and Graph Theory
LIN Miao-Miao, Zhenhai Zhang, SHEN Xiao-Bin · 2018
Combining rough set and graph theory to deal with fault diagnosis of ZPW-2000 non-insulated track circuit, a new concept of fault decision chart is proposed, and a fault diagnosis method of ZPW-2000A non-insulated track circuit based on rough set and graph theory is obtained. The concept of fault information coverage and classification of fault diagnosis rules is further proposed. Using the fault decision table and its adjacency matrix, a method for quickly identifying core attribute and attribute reduction of the decision table is obtained, and the rule hierarchy is applied to fault rule extraction. Using the proposed method to deal with specific examples, the results show that this method can effectively reduce the time and space complexity, and can extract the diagnosis rules according to the set threshold.