中大口径舰炮总体设计中的主要技术问题

针对中大口径舰炮总体设计要求,提出中大口径舰炮总体设计的任务、原则、思路。根据舰炮的基本结构,对中大口径舰炮总体设计中的确定弹药传送路径、选择供弹系统构架、规划排壳方式、制定循环图、选择动力源、实现动力统一等主要技术问题进行分析,对涉及的技术方案进行比较和综述。本文研究成果对中大口径舰炮的总体方案设计具有重要指导作用。     

高射速中口径舰炮供弹动力技术分析与展望

本文围绕高射速中口径舰炮的发展需要,综合分析其供弹动力技术发展现状。针对某高射速中口径舰炮使用需求,对多种高速供弹动力实现途径进行总体建模、动力学分析和数值仿真分析,剖析现有技术的制约因素、工程风险,强调了高速供弹动力技术创新的重要性,提出了内外能耦合供弹动力技术的发展建议。     

舰炮自动供弹系统“统一动力“的设计分析

现代舰炮供弹系统采用“统一动力”传动，是实现自动供弹的最佳技术途径。本文根据某型舰炮自动供弹系统的研制实践，提出了舰炮供弹通道和“统一动力”系统的可靠性模型，了“统一动力”系统可靠性设计的基本方法。     

智能传感器在舰炮系统中的应用

舰炮系统作为舰艇常规装备,近年来面临着智能化发展需求。本文首先对传统传感器在舰炮系统中应用的问题进行梳理,较为详细地叙述智能传感器的主要功能及特点,针对传统传感器的使用问题及舰炮系统智能化需求,分别从故障诊断、智能供弹、健康管理、数字孪生等4个方面对智能传感器在舰炮系统中的应用问题进行探讨,为智能传感器在舰炮系统中的实际应用提供一些思路和建议。     

舰炮供弹系统动力学仿真分析

某型舰炮采用内能源转管自动机,弹鼓式供弹系统,本文利用CAD仿真软件,建立其供弹系统的虚拟样机模型,采用多体系统动力学的方法模拟舰炮实际工作时受冲击的过程,并进行动力学仿真分析,得到弹鼓角速度、扭矩曲线和齿轮之间的啮合力曲线,为该舰炮供弹系统的优化设计提供了理论依据。采用弹鼓阻力矩及运动状态测试系统、弹鼓运动控制系统、炮弹运动及加速度存储测试系统、数据采集及分析系统搭建弹鼓运动阻力检测装置。通过弹鼓运动阻力参数检测装置对射击过程中弹鼓运动速度、输入扭矩等参数进行采样测试,验证了仿真计算结果。     

铲链式双层供弹系统关键技术研究

铲链式双层供弹系统是使弹链式供弹的小口径速射炮能发射两种炮弹并能根据需要自动更换弹种的新式供弹系统。它的主要研究背景是使国产某型舰炮增加反导能力。它的特点是原理先进，结构简单，可靠性高，改装工作量小，成本低廉。     

舰炮供弹系统故障诊断知识本体建模研究*

针对舰炮供弹系统故障频发,故障诊断知识激增,传统诊断难度增大的问题,在对供弹系统故障诊断知识结构和语义特点分析的基础上,提出了一种基于本体的舰炮供弹系统故障诊断知识建模方法和表示模型。构建了包含供弹系统故障源、故障现象、参数指标、故障原因及排故措施五要素,由决策树连接的供弹系统故障知识本体。并应用推理机 Pellet对模型进行一致性检验。实例验证表明,该本体模型不仅表述直观、效率高,而且利于知识的共享和扩充。     

试论双100mm舰炮的故障

本文针对我国自行研制的双１００ｍｍ舰炮的故障情况，着重论述了供弹机”卡弹“和撞坏输弹机等故障的形成原因，排除方法及预防措施。通过实践验下，已经取得了满意的结果。     

某型舰炮补供弹过程的Petri网描述

为了实现某型舰炮补供弹过程的计算机仿真,以便于对炮手进行科学的模拟训练,基于Petri网理论研究了该炮补供弹过程的建模问题.在对补供弹过程进行了分析与构建了补供弹过程Petri网结构的基础上,将Petri网的变迁与具体操作相关联,与真实操作相一致,建立了基于Petri网行为模型,并对其作了详细的说明.该模型为进一步研究补供弹过程的仿真打下了理论基础.     

速射炮的组合式储供系统

本发明的储供弹系统主要由许多弹箱和组装弹箱实现连续供弹的机械框架组成。弹药分装在多个有环形无链传送机的弹箱内。弹箱装在框架上，由一共用电机通过蜗杆带动各弹箱传送机，将弹药从弹箱送出，再经导引传送到速射炮。     

变频器在卸船机振动给料器系统中的应用

对串电阻降压调速在卸船机振动给料系统中的应用所暴露的问题进行了分析,提出变频器用于振动给料系统的优势,并对ABB变频器应用中的设计、选型、接线和调试做了较为详细的介绍。     

Diel vertical migration and feeding in adult female Calanus pacificus, Metridia lucens and Pseudocalanus newmani during a spring bloom in Dabob Bay, a fjord in Washington USA

Diel vertical migration and feeding on phytoplankton by adult female Calanus pacificus, Metridia lucens and Pseudocalanus newmani were simultaneously measured near the end of a phytoplankton bloom. Almost the entire Calanus population migrated out of the deep layer (108–50 m) at night but only about 30% came to the surface (25–0 m). Feeding occurred only at night and was equally high in the surface and intermediate layers, in spite of much higher food concentrations in the surface. Like Calanus, the entire Metridia population was found in the deep layer during the day but unlike Calanus, 20–50% remained in the deep layer at night and most migratory Metridia were collected from the surface layer. Metridia feeding at night was highest in the surface layer but significant feeding also occurred in both the intermediate and deep layers. Migratory behavior of Pseudocalanus was weak, with the proportion of the population in the surface layer increasing from slightly <10% during the day to approx 30% at night. Feeding occurred in both surface and intermediate layers throughout the 24 h but was greater in both layers at night. The different migratory patterns are discussed in the context of our current understanding of the contributions of predator avoidance and feeding to diel vertical migration.     

用PLC编程预防由于翻板同侧给料而造成的堵料

从港口卸车工艺的基本工作原理入手,叙述了港口卸车过程中可能出现的故障(翻板同侧给料而造成的堵料),和其产生的原因。并利用程序间联锁性的特点,用PLC编程有效的预防这类故障的发生。     

16t带斗门机料斗给料系统的技术改造

为了解决当前煤炭码头所使用的带斗门机料斗给料系统存在的不适应多煤种装卸作业的情况,对给料系统进行了改造。分析了问题症结,详细介绍了方案的确定和方案的实施。改造提高了效率、降低了营运成本。     

Feeding strategies of planktonic cyclopoids in lacustrine ecosystems

Present knowledge of feeding tactics and behaviour, food composition and consumption, and feeding strategies of planktonic cyclopoid copepods is synthesized. Planktonic freshwater cyclopoids consume both plant and animal food. Predatory feeding is highly selective: prey species differ in their size, defense structures, the distance at which they are recognized by the cyclopoid, defensive behaviour when attacked, and their occurrence in the same space as the predator. Within a prey species, cyclopoids select for smaller individuals. The impact of cyclopoid predation on the other zooplankton may be an important source of mortality. However, algal material is consumed to a large extent by the adult and later developmental stages and is a necessary food source for the youngest stages, which have to compete with other planktonic herbivores. Some implications of these food requirements for life strategies of planktonic cyclopoid species in the seasonally changing environments are discussed.     

On the relation of structure, perception and activity in marine planktonic copepods

The goal of this paper is to illustrate how in juvenile and adult subtropical marine planktonic copepods various structures or morphological features function in concert to detect prey and predators. Without motion by either food (e.g. flagellate, ciliate) or feeder (e.g. feeding current) or both (e.g. Acartia spp. and ciliate) few feeding activities will occur. Through motion a food particle is either perceived mechanically or chemically to be followed by appendage activities. A combination of mechano- and chemosensors on their cephalic appendages (and probably on other extremities) serve juvenile and adult copepods to perceive signals. Perception is followed by alternation of motion and sensing by these appendages, or by no motion at all (e.g. behavior by Eucalanus pileatus when perceiving a weak hydrodynamic signal). Non-moving and extended sensors (setae) are best suited for mechanical/hydrodynamic perceptions in those copepods which lack a feeding current and hardly move. Numerous mechanosensors arranged in three dimensions on the first antennae (A1) are required to perceive the precise location of moving prey at a distance (e.g. Oithona feeding on ciliates but also sinking particles). Those copepods which create a weak or intermittent feeding current can supplement nutrition with carnivory, which requires perception by the A1 (e.g. Centropages velificatus adults). These two groups require, in addition to perception of prey motion/location, rapid motion by their appendages (A1, second maxillae M2, etc.) to capture the prey. Nauplii, which satiate at far lower food levels than adults, have one of several means of food acquisition: encounter through forward motion, perception through feeding current, or perception of a moving food particle. The nearly continuous motion of most calanoid nauplii makes them vulnerable to predation because all three pairs of appendages are usually moving. Opposite are nauplii of cyclopoid and a few calanoid species which move only occasionally. Copepodid stages and adults use non-moving and often extended setae on the tips of their A1 to perceive predators at a distance. This structure and their pronounced escape motion may reduce their vulnerability to predation as compared to nauplii.     

机、电、液一体化输送装置液压动力机组模块化设计

从模块化设计的基本概念出发,结合输送装置液压动力机组的设计现状,阐述了输送装置液压动力机组进行模块化设计的可行性与设计方法.     

Bioresuspension and biodeposition: a review

The present literature on biologically mediated fluxes from the benthic nepheloid layer (BNL) across the sediment-water interface into the sediment and vice versa is reviewed. The processes involved are categorised according to direct bioresuspension and biodeposition, i.e. direct interception of the animal with particles, and those effects, which are indirectly created by benthic organisms, e.g., changes of physical properties in the sediments, constructions like tubes and pits and the corresponding changes in hydrodynamic conditions. It is concluded that benthic organisms significantly increase the flux of particles across the interface and that the physically created fluxes are easily modified by a factor of 2 and more.