故障

Being a necessary detection method for CAN bus communication faults in severe environment of intense magnetic field, high temperature and high dust concentration, the invention has the advantages that high difficulty in detecting and eliminating CAN bus communication fault of electrobath control device series during aluminum electrolysis is effectively solved; the method is applicable for YFC-99 intelligent aluminum electrolysis fuzzy controller as well as any control system using CAN bus for communication.

本发明方法为在强磁场、高温、高粉尘浓度的恶劣环境中出现的CAN总线通讯故障提供了必要的检测手段，有效解决了铝电解生产现场槽控机系列CAN总线通讯故障的判断和处理难度大的问题。本发明适用于YFC-99型铝电解智能模糊控制机，也可适用于所有以CAN总线为通讯方式的任何控制系统。

Based on the designing task, the paper gives a comparative analysis of current fault diagnosing methods such as reasoning-based, model-based, artificial neuron-based and case-based, The paper presents an intelligent diagnosing system composed of expert system and virtual apparatus where virtual apparatus is used as man-machine conversation interface to collect data and call expert-system and expert-system is the core for diagnosis analysis, elementally projecting the diagnosis system.

根据设计任务的要求，对现有的故障诊断方法：基于推理的方法、基于模型的方法、基于人工神经网络的方法、基于案例的方法等方法进行了对比分析，提出了以虚拟仪器作为人机对话界面及接收采集数据部分，专家系统作为诊断分析部分的核心，虚拟仪器调用专家系统进行分析的智能故障诊断系统，即专家系统加虚拟仪器的诊断系统。

Thirdly, it collect the ship mechanical accidents of the main Chinese shipping company ,and then sorts them out as four items: equipmentname, typical trouble, monitoring parameters, consequence; uncovers the internal relation among man,machine,circumstance and management, establishes a relation database between condition monitoring and typical trouble for the engine-room equipments ; refering to the SMSC-2000 marine engine-room simulator in Shanghai Maritime University, it divides the engine-room system into eight subsystems, designs the monitoring interfaces which is marked with the monitoring parameters, detects the running engine-room machine by use of trouble analysis and information syncretizing, and builds up the condition monitoring system of engine-room machines.

其次，对近十几年来的国内主要航运企业中的重大船舶机损事故搜集，按设备名称、典型故障、监测参数和后果进行整理、分析和总结；揭示了船舶机损事故中人、机、环境和管理之间的内在联系：以我院的轮机模拟器SMSC-2000参照，把船舶机舱各设备划分为8大系统，确定了标注有监测参数的各系统简图，并运用信息融合和故障诊断技术对机舱重要设备的运行状态进行监测，建立起机舱设备的运行监测系统。再次，提出了以人、机、环境和管理四大安全要素为评估指标，给出了四者间的权重系数计算方法，提出了线性加权综合模型来最终对机舱设备进行安全评估，得出安全等级，指导船舶管理人员进行管理。

In automobile electrical check process,frequently can meet exchanges the situation which the new fuse blows a fuse immediately,moreover these breakdowns processing and the inspection quite are generally complex,The automobile services and drives the personnel frequently to be unable to inspect,The partial personnel even use replace a larger capacity fuse to replace,Has created a bigger harm,Serious also can create the fire equipollent major accident,This article from inserts the fuse is the fuse principle analysis obtains,Key introduction overhaul method and method,Thus is faster accurately looks up the breakdown reason and the spot.

在汽车电路检查过程中，经常会遇到换上新的保险丝立即熔断的情况，而此类故障的处理与检查往往比较复杂，汽车维修与驾驶人员常常无从入手，有的甚至采用更换更大容量的保险丝代替，造成了更大的电器损害，严重的还会造成火灾等重大事故。本文从插保险丝即熔断的原理分析入手，重点介绍检修的方法和手段，以便更快速更准确地查到故障原因和部位。

The idea is presented to convert sequences and consequences of event tree into their corresponding fault trees, which is used in the event tree analysis combined with fault trees. Then, a sequence analysis strategy based on cut sets matching is introduced, and the event tree fast analysis algorithm is implemented.

针对与故障树相结合的事件树的分析计算，提出了将事故序列和事故后果转换为相应的故障树求解的方法，并在此基础上，设计并实现了事件树的快速求解算法。

According to the example, this is an efficient approach over FTA, but also it can handle diagnosis reasoning and exculpation reasoning and that FTA cannot.

实例表明，该方法不但比故障树分析更有效，而且能进行故障树分析不能进行的诊断推理和辩解推理。

It have four work manner of whole machinetool whole automatism , whole manchinetool half automatism , stand-alone half automatism , stand-alone hand operation . Whole system have beforehand opening , startup , beforehand stopping , exigence stopping , exigence baking off and noting count . It have apiece drive online or leaveline , exceed time protecting , short circnit protecting , lose press protecting , hydranlic pressure over great protecting , clamp lack protecting . It have failure give an alarm and failure displap . It have work manner display , work predicement display .

它具有全机全自动，全机半自动，单机半自动和单机手动四种工作方式，整个过程具有预开，启动，预停，紧急停止，紧急后退和记数功能，具有各动力头在线/离线选择，具有超节拍保护，短路保护，过载保护，失压保护，液压过大保护，夹紧力不足保护功能，具有故障报警和故障显示功能，具有工作方式显示，工作状态显示功能。

This paper studies the design and implementation of fault diagnosis expert system.

本文主要研究了基于故障树的远程故障诊断专家系统的构建和实现。

It has a built-in enhanced high speed CAN interface (ISO11898-2 and -5), with local and bus failure diagnostics, protection, and fail safe operation mode.

MC33905内置了高速CAN接口(ISO11898-2 和-5)，以及本地和总线故障诊断，保护以及故障安全操作模式等。

Upon failure of plant air or electricity the fail safe will "trip" and allow air to close the Red Valve.

当气源出现故障或电气出现故障时会"激发"启动并释放储存罐内的气体以关闭美国红阀公司的阀门。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。