基于改进键合图方法的层次机电系统的测试性建模与分析

现有层次化机电系统测试性建模与分析方法,存在着测试性参数值较小的缺陷,为了解决上述问题,提出基于改进键合图方法的层次化机电系统测试性建模与分析方法;引入改进键合图方法,将其有效的融合到贝叶斯网络中,以此为基础,搭建系统测试性模型,通过插值获取测试性参数;以搭建的系统测试性模型为工具,描述层次化机电系统结构,构建层次化机电系统键合图,检测并隔离层次化机电系统故障,实现了基于改进键合图方法的层次化机电系统测试性的建模与分析;通过实验结果显示:与现有的3种层次化机电系统测试性建模与分析方法相比较,提出的层次化机电系统测试性建模与分析方法极大地提升了测试性参数,充分说明所提方法具备更好的测试性效果。

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The existing testability modeling and analysis methods of hierarchical electromechanical system have the defects of small testability parameters, in order to solve these problems, a new testability modeling and analysis method based on improved bond graph for hierarchical electromechanical system is proposed. The improved bond graph method is introduced, which is effectively integrated into Bayesian network. On this basis, the testability model of the system is built, and the testability parameters are obtained by interpolation. Taking the built system testability model as a tool, the structure of hierarchical electromechanical system is described, the bond graph of hierarchical electromechanical system is constructed, the fault of hierarchical electromechanical system is detected and isolated, and the testability modeling and analysis method of hierarchical electromechanical system based on the improved bond graph is realized. The experimental results show that: compared with the existing three testability modeling and analysis methods for hierarchical electromechanical system, the proposed testability modeling and analysis method for hierarchical electromechanical system greatly improves the testability parameters, which fully shows that the proposed method has better testability effect.