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根据液压控制系统特点，建立系统故障树，提出了利用故障树的最小割集矩阵和计算结构重要度进行故障树定性分析的新方法。经工程实例验证表明，算法简单，通用可靠。
According to the characteristics of hydraulic control system, a system fault tree is established. A new method of fault tree analysis based on the minimum cut matrix of fault tree and the importance of structure is proposed. The engineering example shows that the algorithm is simple, universal and reliable.