简介:GiventherecentsuccessinthedevelopmentofseveralsubmersiblesinChina,people’sinterestinthehistoryofsubmersibledevelopmentisincreasing.ThispaperpresentsthehistoryofsubmersibledevelopmentinChina,whichcanbebrieflydividedintothreeperiods.Thefirstoneistheearlyperiodofhardship(1971–2000).ManyprototypesubmersiblesofHOVs,ROVs,andAUVsweredevelopedatthistime,butthemainachievementwastheestablishmentofspecialresearchorganizationsandthetrainingofresearchanddevelopmentpersonnel.Thesecondperiodcanberegardedasthequickdevelopmentperiod(2001–2015).Allcurrentlyusedsubmersiblesweredevelopedduringthisperiod.Themostremarkableachievementwasthesuccessfuldevelopmentof7000m-deepmannedsubmersibleBJiaolong.^Thethirdperiodaimstodevelop11000msubmersiblesforchallengingthefulloceandepth(2016–2020).Inthisperiod,twounmannedsubmersiblesandtwomannedsubmersibleswillbethesignificantindicatorsofachievement.Ifthis5-yearplancanbesuccessfullycompleted,Chinacanplayasignificantroleintheinvestigationofthedeepestpartoftheoceans,namely,thehadaltrenches(6500–11000m).
简介:城市轨道交通车载控制器与信号系统其他子系统具有多种类型接口,进行系统集成测试时存在测试环境搭建复杂、故障注入难以实现等问题,鉴于此,提出一种车载控制器集成测试的新模式,即主要采用仿真模拟的技术手段来构建集成测试平台,实现其他子系统的虚拟化和模块化控制,有利于实现故障精准注入,并引入部分实体设备以还原真实工作环境。对车载控制器仿真测试平台环境部署和实现方式进行简单的阐述,并将该方法在单轨车载控制器的集成测试中进行了实践和应用,辅助车载控制器通过了SIL4安全认证,大幅度降低测试人员及设备场地费用,同时也提高测试效率,具有良好的用户体验与经济效益。