基于有向图的电路推理模型研究

Investigation of circuit inferencing model based on oriented-graph

电路仿真培训系统能够弥补实物培训设备的诸多缺陷,在电器设备操作及维修人员的岗位培训中发挥着重要作用。电路推理模型作为电路仿真系统的核心,目前多采用电路拓扑公式抽取方法来实现。该方法需人工分析电路的串并联关系,建立节点关联矩阵,因此建模工作量大。针对这一问题,提出基于有向图的电路推理模型,该模型直接从电路矢量图形出发,将其转化为电路有向图对象,在电路任意工作状态下搜索有向图的导通路径,给出合乎原理的工作状态演示。通过汽车电路仿真系统的实现,证明该模型的建模工作量小,运行可靠,尤其适合于复杂开关电路的仿真开发。

The circuit simulation system can make up many flaws of the material training equipment, so it is playing the vital role in the training ofoperation and service workers. The circuit inferencing model is the core ofcircuit simulation system, at present it is simplified to a logic formula. This method must artificially analyze the series-parallel relations of the circuit and establish point incidence matrixes. Therefore the modeling work is arduous. In view of this question, a circuit inferencing model based on oriented-graph is proposed. This model begins directly from the vector-graph, and is transformed to circuit oriented-graph. Searching the passing way in the orientedgraph, status demonstration of the circuit is produced. In the realization of automobile circuit simulation system, it is proved that the modeling work is convenient, works reliably, and suits to the simulation of complex switching circuit.