Fault diagnosis of mechanical structure of launch tower swing rod based on digital twin

DOI:	10.11809/bqzbgcxb2024.01.025
Keywords:	digital twin; swing rod mechanism; fault diagnosis;electromechanical hydraulic system; condition test
Abstract:	Aiming at the difficulty in accurately evaluating the performance status of large complex electromechanical hydraulic systems, which is because of the lack of insufficient historical fault data, effective fault data collection mechanism and mature quality monitoring management technology, a fault diagnosis method based on digital twin technology is proposed with theswing rod mechanism of launch Tower as a typical mechanism.According to the theory of Five dimension Model of digital twin system, this paper constructs the digital twin architecture of swing rod mechanism system and establishes a virtual simulation model with UG software by constructing Geometric kinematics and dynamics modeling. A digital twin system is put forward by the joint simulation of ADAMS and Matlab.With comparison between the simulation signal and the measured signal, it shows that the simulation accuracy of the system for physical entities can reach 96%. Finally, the effectiveness of the fault diagnosis of the swing rod mechanism based on the digital twin is verified by modifying the corresponding parameters of the virtual model in the light of the typical fault of discontinuous moving. The feasibility of the demonstration of maintenance measures can be also proved based on the digital twin.
Published:	2024-01-28
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