Reliability Analysis of Yarn Tension Control System Based on FTA in Jacquard Loom

Aimed at the problem of high failure rate in the tension control system of traditional circular knitting machine, this paper proposes and develops a kind of embedded yarn tension control system. Systematically study the causes of different failures in yarn tension control system and analysis the influencing reliability factors of real-time control system by FTA (Fault Tree Analysis) method, built system fault tree with qualitative analysis and quantitative analysis, work out the minimal cut set of system and estimate the occurrence probability of the top event. Figure out specific improvement measure and provide reference to enhance the system reliability. The improved tension control system is running steadily in the experiments, and analyzes the result turns to be beneficial to improve the reliability.