相似理论在CBTC仿真系统应用研究

现阶段缺少仿真系统性能的评估方法,造成仿真系统在设计实现时缺少理论指导,耗费大但仿真效果不明显。本文提出一种基于相似理论的系统相似价值分析方法,从结构和功能两个维度,设备种类和数量、接口种类和数量、逻辑功能和通信功能的六个指标评估仿真系统与真实系统间的相似性,结合仿真系统与真实系统的费用比,建立了评估仿真方案价值的度量模型。以CBTC系统为例,针对一条地铁线路的4000种候选仿真方案,在计算各个方案的相似价值的基础上,选取价值最大的仿真方案为最优方案。仿真价值模型对定量评估仿真系统,搭建仿真系统提供了决策依据。

Research on CBTC Simulation System Based on the Similarity System Theory

At the stage, the unavailability of evaluation method for the similarity system results in lack of theoretical guidance for the design and implementation of simulation system, which leads to low simulation effect but high financial budget. An analysis method based on similarity theory is provided in the paper, involving six indexes including component category and number, interface category and number, logic effect and communication effect, from structure and function two aspects to evaluate the similarity between the simulation system and the real, and cost ratio of simulation system and real one. To evaluate similarity value of 4000 candidate schemes in a case of CBTC system in a subway, the plan with maximum value is best and chosen. Similarity value can provide support for evaluating or building simulation system.