新型轮机仿真平台实操考试自动评估算法  

An automatic-evaluation algorithm for the operation examination of the novel marine engine simulation platform

作　　者：张巧芬[1] 孙建波[1] 史成军[1] 孙才勤[1] 

机构地区：[1]大连海事大学轮机工程学院,辽宁大连116026

出　　处：《哈尔滨工程大学学报》2014年第6期725-730,共6页Journal of Harbin Engineering University

基　　金：国家863计划资助项目(2011AA110201)

摘　　要：针对国内外轮机模拟器在操作考试和自动评估方面功能的不足,提出了一种基于专家系统评分规则的模糊评估算法并应用于轮机虚拟现实仿真平台。该算法采用通用试题评估规则表来设置各道试题的具体评估规则,实时跟踪操作考试过程中相关变量的变化,进行答题过程评估和答题结束评估。评估过程中选用合适的隶属函数来计算变量在检测范围内的隶属度,操作结束时自动打分并提供可查询的扣分记录。实例中基于此平台的实操考试自动评估结果与专家系统评分结果一致,验证了该算法的可行性。该新型轮机实操考试与自动评估系统打破了传统的船员考试制度,能够真正意义上地提高船员实操和管理能力。Aiming at the deficiencies of domestic and foreign marine engine simulators, based on the aspects of crew operation examination and automatic-evaluation, a fuzzy evaluation algorithm based on the expert system assessment rules has been proposed and applied to the marine engine virtual reality simulation platform. This algorithm was accomplished by setting the evaluation rules specific to each question according to a common evaluation rule table initially, and then tracking the variables during the whole operating process. The evaluation proceeded during and after the examination. A proper membership function was chosen to calculate the membership degree for each variable during the evaluation, and a reasonable score was given after the evaluation with a queryable evaluation record. Finally an operation example was taken. The evaluation results being consistent with the scores given by the expert system show that the feasibility of the algorithm is well verified. The novel marine engine simulation platform designed for operation examination and automatic-evaluation has broken away from the traditional form of crew examination, which can improve the operational and management ability of the crew in a real sense.

关 键 词：轮机 仿真 虚拟现实 实操 专家系统 评估算法 隶属函数 

分 类 号：TP391.6[自动化与计算机技术—计算机应用技术] U664.82[自动化与计算机技术—计算机科学与技术]