某型舰载机箱电磁屏蔽的结构工艺设计

文章通过对某型加固机箱屏蔽效能的计算分析,论证了缝隙对屏效的严重影响,提出在结构工艺上保证机箱的电磁屏蔽性和抑制电磁干扰的有效措施。     

提高CRTSⅡ型轨道板打磨效率的途径

随着CRTSⅡ型轨道板在高铁领域广泛应用,如何提高轨道板生产效率,合理配置轨道板场规模和数量,减少建场投资和各种资源浪费,已成为一个很现实的问题。在京沪高铁施工中,针对以前板场普遍存在的CRTSⅡ型轨道板打磨效率低的问题,通过对毛坯板生产工艺进一步完善,对工装模具设计、制造及监控等环节进一步优化,对数控磨床及其控制软件升级改造,与京津城际相比,大幅提高轨道板打磨效率,进而提高了轨道板生产效率约20%,为今后CRTSⅡ型轨道板规模化生产积累了宝贵的经验。     

The trade‐off between efficiency,effectiveness, and social feasibility of regulating road transport externalities

This paper discusses the tension between the theory and practice of the regulation of road transport externalities from the viewpoint of the trade‐off between efficiency, effectiveness and the social feasibility of regulation. Various possible types of regulatory instruments, subdivided into ‘direct’ demand management, ‘indirect’ demand management and ‘supply side’ oriented policies, are evaluated qualitatively according to these criteria. Attention is then directed towards the trade‐off between efficiency, effectiveness and feasibility within the field of ‘direct’ demand regulation of road transport.     

探查水下矿物资源的AUV动力控制系统开发

Valuable mineral resources are widely distributed throughout the seabed. autonomous underwater vehicles (AUVs) are preferable to remotely-operated vehicles (ROVs) when probing for such mineral resources as the extensive exploration area makes it difficult to maintain contact with operators. AUVs depend on batteries, so their power consumption should be reduced to extend exploration time. Power for conventional marine instrument systems is incorporated in their waterproof sealing. External intermittent control of this power source until termination of exploration is challenging due to limitations imposed by the underwater environment. Thus, the AUV must have a power control system that can improve performance and maximize use of battery capacity. The authors developed such a power control system with a three-step algorithm. It automatically detects underwater operational states and can limit power, effectively decreasing power consumption by about 15%.     

三角模糊数与数据包络分析在舰艇编队防潜队形选择中的应用

针对舰艇编队防潜队形选择的主观性问题,探讨了三角模糊数与数据包络分析(DEA)理论在舰艇编队防潜队形选择中的应用.采用三角模糊综合评价模型对典型方案队形进行评价优选,同时将DEA分析理论应用于编队队形的优选问题研究,构建了合适的DEA模型,分析了典型方案队形的相对有效性.通过求解,得出了最佳防潜队形--菱形队形.     

长江口深水航道南北两侧可航水域开发、使用的可行性探讨

长江口深水航道是目前船舶进出上海港和进出长江沿岸各港口的咽喉要道。随着船舶大型化的发展趋势以及重栽船舶的日益增加,使得进出深水航道的船舶密度趋于饱和。为防止深水航道航行条件的恶化,保障航行安全,“开发、使用深水航道南北两侧可航水域”成为一个值得探讨的方案。     

ADC模型在火控雷达作战效能分析中的应用

根据火控雷达组成和任务,采用ADC系统效能评估模型,通过对系统的可用性向量A、可信性矩阵D、能力向量C以及抗干扰效果因子KAJ的建模,推导出火控雷达系统作战效能方程,为该型雷达的研制、推广、改进及作战使用提供辅助的决策依据。     

提倡节能设计理念 不断优化轮机设计

本文主要以离心泵与电动机选型设计为例,探讨轮机节能设计方法。     

基于FAHP法的舰艇防空作战中电子战效能评估

舰艇防空作战中电子战的作战效能是衡量防空作战能力的基本依据。为定量评估防空作战中电子战的作战效能,建立了评估防空作战中电子战作战效能的指标体系,并对其进行了分析。首先采用层次分析法确定各因素的权重,然后运用模糊理论对防空作战中电子战效能进行综合评价,用于对防空作战中电子战作战效能进行排序及优化,为指挥员的决策提供一定的量化分析和决策依据。