为提高LNG船船员培训水平,用VB实现了LNG船液货操作模拟器的培训评价系统.系统包含卸货、装货、氮气清扫绝缘空间、液舱干化、液舱惰化、LNG气体扫舱、液舱冷却、压载航行、满载航行、喷淋泵扫舱、液舱暖化、液舱通风等13个部分的仿真操作和培训评价;在卸货和装货部分用模糊评判和层次分析法建立其评价数学模型,其他部分使用简单的线性化模型对重要的指标参数进行建模.系统由33个窗体组成,仿真操作部分采用Access数据库与培训评价部分进行数据通信,评价结果以数据表格形式给出,可按姓名和成绩等进行重新排序.经过测试,系统能够模拟LNG船液货操作的各重要操作并给出适当评价,仿真和评价效果满意.
In order to improve the training level of the crew for liquefied natural gas(LNG) ships, the valuation system of LNG liquid cargo operations simulator training is developed by using Visual Basic. The system includes the simulation operation and training evaluation of the following thirteen parts: unloading, loading, insulation space inerting, cargo tank (CT) drying, CT inerting, CT gassing up, CT cooling-down, ballast voyage, laden voyage, stripping, CT warm-up as well as CT aeration. The eval- uation models of loading and unloading are based on fuzzy com- prehensive assessment and analytic hierarchy process, and the model of the residual parts are built by using simple linearized model. The system contains 33 forms, and the communication between the simulation part and the training evaluation part can be established by Access database. Evaluation result is presented by diagrams which can be sorted by name and score. Tests show that the evaluation system of LNG liquid cargo operations simula- tor training can give the proper evaluation, which is satisfactory.