Fault diagnosis method and device for lead screw transmission system and computer equipment

• Main Authors: JIANG ZHAOXIANG, CHEN XUEYING, WANG GUANGJIN, ZHONG YANJIE, LIU CAIXUE, PENG CUIYUN, YANG TAIBO
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2024
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention discloses a fault diagnosis method and device for a lead screw transmission system and computer equipment, relates to the technical field of the nuclear industry, and solves the problems that the problem of a transmission part is difficult to judge before a fault occurs and the fault diagnosis reliability is relatively low at present. The method comprises the following steps: performing signal feature calculation based on a group of vibration acceleration signals corresponding to each to-be-diagnosed component to obtain a feature vector group corresponding to each to-be-diagnosed component, a principal component analysis method is adopted to screen out a plurality of target key feature vectors used for representing fault types and corresponding to each to-be-diagnosed component from the feature vector set corresponding to each to-be-diagnosed component, and a random forest model used for fault diagnosis is utilized based on the plurality of target key feature vectors corresponding to each to-be-