Simulation Analysis of Electromechanical Coupling for Unmanned Aerial Vehicle Cabin Door System

In order to study the dynamic response of the unmanned aerial vehicle cabin door opening and closing system under impact load conditions, considering the flexible treatment of mechanical components, and the system’s motion with different stiffness of energy-absorbing components, a rigid-flexible coupling model of the cabin door actuation system was established in LMS. Virtual. Motion. In Amesim, a control model of the motor was created. Through the Motion-Amesim co-simulation module, the dynamic module of the system was combined with the motor control module to complete the electromechanical coupling simulation and analyze the results. .

Magnetic field and performance analysis of a tubular permanent magnet linear synchronous motor applied in elevator door system

A novel elevator door driven by tubular permanent magnet linear synchronous motor (TPMLSM) is presented. This TPMLSM applies axial magnet array topology of the secondary rod, air-cored armature windings and slotless structure of the forcer to improve the stability of the thrust. The influence of two major dimensions, the pitch and radius of the permanent magnet (PM), on magnetic field was studied and the best values were given by the finite element analysis (FEA). The magnetic field, back EMF and thrust of the motor were analyzed and the PM size was optimized to reduce the harmonic components of the magnetic field and improve the performance of the motor. Predicted results are validated by the experiment. It is shown that the performance of the motor and the novel elevator door system is satisfying.

Fault Prediction of Elevator Door System Based on PSO-BP Neural Network

Nowadays, the elevator has become an indispensable means of indoor transportation in people’s life, but in recent years this kind of traffic tools has caused many casualties because of the gate system fault. In order to ensure the safe and reliable operation of the elevator, the failure of elevator door system was predicted in this paper. Against the fault type of elevator door system: elevator door opened, excessive vibration when elevator door opened or closed, elevator door did not open or closed when reached the specified level. Three fault types were used as the output of the prediction model. There were 8 reasons for the failure, used them as input. A model based on particle swarm optimization (PSO) and BP neural network was established, using MATLAB to emulation;the results showed that: PSO-BP neural network algorithm was feasible in the fault prediction of the elevator door system.

Application of the Robust Approach and Finite Element Analysis in Door System Static Design

The robust design approach based on Taguchi＇s design of experiment （DOE） coupled with the traditional finite element analysis （FEA） is applied to the static design of a sedan door. This method aims at shortening the design period, reducing the calculation cost and improving the competitive competence. First, the pe^ormance re- quirements, the control factors and the corresponding levels are determined to design a DOE table. Second, based on the schemes from the DOE table, sensitive control factors are distinguished from the results of the FEA method. Finally, the optimum design is chosen after comparisons and analyses of these performance response graphs. Performance results of the optimum design indicate that the application of the robust approach and FEA can greatly im- prove the quality of the door system, satisfy the requirements of products, underline the design purpose and shorten the design period.

Reliability Analysis of Metro Door System Based on FMECA

The metro door system is one of the high failure rate subsystems of metro trains. The Failure Mode, Effects and Criticality Analysis (FMECA) method is applied to analyze the reliability of metro door system in this paper. Firstly, failure components of the door are statistically analyzed, and the major failure components are determined. Secondly, failures are classified according to their impacts on operation, and methods of calculating failure mode criticality and the related coefficients are illustrated. Finally, the FMECA is detailed in the selected 12 failure modes, and the failure modes are discovered that they have the most significant effect on metro door system. The obtained results can be used for optimal design and maintenance of the metro door system.

基于DOORS和Eclipse的软件追溯链审查方法研究

在高安全软件开发过程中,软件追溯链审查是提高软件质量的重要手段。为了解决基线管理、审查完整性和结果可复用等问题,提出了一种基于DOORS平台和Eclipse平台的软件追溯链审查方法。为审查活动设计并开发了工具软件,采用差异比对算法进行版本迭代后的审查结果复用。经实际应用,该方法可以提高软件追溯链审查的效率及效果。

电梯门系统故障在线监测技术研究

本文在分析电梯门系统常见故障现象基础上,选取振动加速度、位移、电流三个物理参数来表征电梯门系统运行状态;搭建的实验平台上设置了振动加速度传感器、红外线位移传感器、霍尔传感器,采集门系统的振动加速度、开关门位移、门机电流三个运行状态数据,并通过人为设置故障,在实验状态下获得典型故障特征数据,并提取了门系统常见故障特征曲线。应用电梯门系统在线监测技术,可实时在线监测门系统的运行,并快速、准确定位门系统故障,实现门系统故障诊断。

变电所门的设计要点简析

梳理变电所门的主要作用和设置要点;介绍变电所门的常见的“机械锁”和“门禁”两种形式的管理方式;结合气体灭火系统的特点,分别对两种管理方式下变电所的外门和相邻变电所之间双向开启弹簧门的特点进行分析,提出一种验证灭火剂喷射时能否顶开变电所门的公式,并结合气体灭火系统的要求提出合理建议;最后,分析低压柜长度对门设置的影响并提出建议。

非屏蔽门地铁车站隧道与站台空气交换量模拟研究

对于非屏蔽门地铁车站,从隧道进入站台的无组织气流对地铁车站通风空调系统的运行能耗有重要影响。本文基于STESS软件,对采用非屏蔽门系统的地铁车站的隧道与站台的空气交换量进行了模拟研究,分析了隧道长度、发车对数、双向列车到站时间间隔等因素对非屏蔽门系统隧道与站台的空气交换量的影响。根据模拟结果,给出了隧道与站台的空气交换量的估算公式,可用于地铁通风空调负荷计算及运行能耗分析。

屏蔽门漏风对地铁站台公共区弥散送风效果的影响研究

弥散送风系统(DASS)能为地铁站台公共区提供舒适的热环境,但地铁实际运行中站台存在屏蔽门漏风,对DASS送风气流的影响需要进一步研究。采用数值模拟方法,对屏蔽门漏风作用下站台公共区DASS的送风效果进行研究,并对DASS送风板开启位置进行了优化。结果表明:不考虑屏蔽门漏风作用时,一侧射流式DASS方案的站台公共区温度分布不均匀,靠近送风口一侧温度高,局部区域高于32℃;列车进站时,送风侧吊顶满布弥散送风板的方案使送风出现短路,部分气流直接从楼扶梯口排出,站台公共区靠近送风口一侧温度高于30℃,温度分布不均匀;楼扶梯附近的吊顶板封闭时,避免了气流短路现象,站台公共区温度在23~30℃范围内,送风效果得到改善;列车离站时,将楼扶梯附近的吊顶板封闭,人员活动区温度在28℃以内,满足热舒适要求。

城市轨道交通场段库门控制系统与信号系统接口方案

城市轨道交通全自动运行线路中,场段内停车列检库设置的库门对各全自动区域起到隔离封锁的作用。列车出/入库作业过程中,库门需执行打开和关闭操作,采用何种库门控制方式将会影响列车出/入库作业的安全和效率。首先介绍全自动运行线路库门控制防护原理,然后对库门控制系统与信号系统间采用不同的接口方式进行分析和比较,最后给出适用于全自动运行线路的接口方式。

无框门系统设计思考和实践

本文以某硬派越野车为例,对无框车门系统设计的关键要素进行思考与总结。无框车门钣金系统只有水切下的部分,作为系统载体,文中总结了其应具备的结构特点和性能要求;无框车门密封系统结构复杂,文中介绍了关键密封断面和力学性能要求;玻璃升降系统采用了双导轨设计,文中对其重要设计参数要求进行了分析与总结。某硬派越野车装车实践后效果良好,本文的设计思考证实可靠。

基于LCU的城轨车辆客室车门控制及故障检测系统设计

在城市轨道交通车辆运营中,车辆各系统的可靠性关系到乘客的人身安全。其中,客室车门系统的故障率在城轨车辆各系统中居高不下。为了解决客室车门系统的高故障率以及故障定位困难等问题,文章基于KNT城轨车辆客室车门实训装置进行了二次开发,对客室车门系统的前端控制进行了无触点化处理,采用网络通信方式对故障进行可视化处理,有效降低了客室车门系统的故障频率,能够直观地对电气故障进行定位,弥补了城轨车辆故障排查与处理研究的不足,提供了一种无触点化的电气控制解决方案。

新建高校火灾自动报警与消防应急照明系统设计

新建高校作为有多种功能的特殊的建筑群,其自身的建筑特点导致火灾自动报警系统设计与其他常规项目不一样,特别是对于部分按规范无需设置火灾自动报警系统的单体建筑,火灾自动报警系统、消防应急照明和疏散指示系统设置均存在较大差异,如火灾切非位置设置、电气火灾监控设置、消防应急照明和疏散指示系统的控制方式是选择集中控制型系统还是非集中控制型系统、火灾时如何启动集中电源集中控制型系统等等。

被动式建筑节能技术要点分析

被动式节能建筑能够最大限度地降低建筑的热损失,在为人们提供舒适的居住环境的同时,能减少采暖及制冷产生的能量消耗。文章以马厂安置区幼儿园建设项目为例,先介绍了被动式建筑的主要优势,然后从新风系统、保温系统、门窗系统、辐射采暖制冷技术、气密性施工等方面阐述了被动式建筑节能施工技术,以期为同类工程提供参考。

基于全自动运行的智能站台门控制系统的设计

为提高城市轨道交通自动化运行水平,应用多节点智能化通信技术、Zigbee无线通信技术,设计了一种功能完善、实用性强的智能站台门控制系统。首先,介绍了系统设计关键技术;其次,根据系统需求分析情况,完成了系统架构设计和系统数据库设计;最后,分别设计了用户登录、数据发送、数据接收、通信链路、多车型智能控制等模块,保证了系统功能的实现效果。

一种基于激光雷达探测新型安全可靠高铁站台门控系统

针对铁路动车组无列车自动驾驶(ATO)且在同一站台不同车型混合运营,现有的站台门控制系统无法识别多种车型车门位置的难题,提出基于激光雷达技术的铁路站台门控制系统。首先分析铁路多车型环境下车门位置排布信息,再利用激光雷达采集相对应的位置信息和动车组停稳信息,设计激光雷达位置跟踪控制单元,然后对站台门控制系统进行设计,最终通过实验验证。实验结果表明,该系统安全、可靠,不仅能准确识别不同动车组的车门位置且能判别动车组停稳,准确率超过98.4%,为其后铁路站台门的推广、应用提供理论和应用基础。

轨道车辆门系统锁闭技术专利分析

从专利申请量趋势、首次申请国、目标市场国等多个维度,对轨道车辆门系统的锁闭技术的全球专利进行总体分析,并针对该领域的部分重要申请人在锁闭技术方面核心专利的技术路线进行剖析和解读。通过上述分析进一步对轨道车辆门系统的锁闭技术未来的发展趋势进行了展望,以期为我国轨道车辆门锁闭技术的发展提供参考依据。

基于维修成本的As车车门系统预防性维修间隔决策研究

为保障地铁运营安全,当前地铁运营企业普遍采用定期维护策略,定期维护策略会导致过度维修与维修不足的情况出现,合理的制定维修间隔决策,减少过度修和维修不足的问题,有利于降本增效及车辆安全可靠运行。本文基于As地铁车辆车门系统的历史故障数据,建立了车门系统故障分布模型及可靠度函数。根据车门系统故障分布模型及可靠性特征值,综合考虑地铁车辆的维修经济性与可用性要求,建立基于维修成本的预防性维修间隔决策模型,分析获取可行的最优预防性维修间隔决策。