故障安全

In this paper, the demand and measure of security for the internet tax payment system in our work have been introduced. The investigation and analysis of the real security in the internet tax payment system reveal that the secure risks are mostly from damages of software and hardware, malice code, virus attack, error operation of legitimate user, attack and destruct of malice assaulter and hacker.

本文以作者的实际工作为基础，对网上报税系统的安全需求及已采取的安全措施进行了简要介绍，通过对网上报税系统安全现状的调查和分析，了解到其安全威胁主要来自系统的软硬件故障、恶意代码和病毒的攻击、合法用户的误操作、恶意攻击者或黑客利用系统的安全漏洞及管理上的漏洞进行恶意攻击和破坏等几方面。

Good performance of the electromagnetic torque is dependent upon reliable operation ofthe feedback sensors such as position sensors, current sensors and voltage sensors. In event ofsensor failures, HEVs may accept permanently reduced drive performance and even bringabout fatal traffic accidents. In practical applications, the most common failure of controlsystems is sensor faults. Therefore, it is also necessary to develop a torque control system ofinduction motor for HEVs with sensor failures.

电机转矩控制精度依赖于位置、电流及电压传感器精度，一旦这些传感器出现故障，轻者造成车辆性能永久下降，重者引发严重安全事故；在实际应用中，控制系统传感器出现故障频率最高，因此对传感器故障状态下的车用电机转矩控制研究具有同样重要的意义。

The equipment's failure diagnosis technique is one of the basic measures to guarantee equipments safety circulate.It can make earlier period forecast and judgement to the equipments, put forward the counterplot for avoiding or reducing the occurrence of the trouble.

设备故障诊断技术是保障设备安全运行的基本措施之一，它能对设备故障的发展作出早期预报，对出现故障的原因作出判断，提出对策建议，避免或减少事故的发生。

Based on the analysis on the relationship of the positive and the negative sequence impedance, also the positive and negative fault component current under simple and duplicate fault conditions, a cross-country fault identifier is proposed in this paper.

同杆并架输电线路故障的主要特点是有跨线故障，而当系统发生跨线故障时如果没有正确识别出来，那么保护就很有可能无选择性同时切除两条线路，从而对系统的安全稳定运行造成恶劣影响。

The ground faults in the generator stator and rotor are common and always the premonitory of the internal fault of generator, which may make great damage to the generator.

发电机定子、转子接地故障是发电机常见故障，而且往往是更为严重的发电机内部故障的先兆，严重威胁发电机的安全。

The phase of ω0 frequency fluctuates tempestuously. The resonance peaks of flexural and torsional vibrations response are present at 2/3ω0 1/2ω0 1/3ω0 and 1/4ω0 with three kinds cracked rotor models. Near 1/2ω0 frequency, quasi-periodic and chaotic motions maybe appear. Periodic, quasi-periodic and chaotic motions show on alternately when the rotating speed is near to 2/3ω0.Combined step-by-step integral method with traditional transfer matrix method, an increment transfer matrix method is put forward.

研究结果表明：各种故障情况下，华北电力大学博士学位论文弯振和扭振之间都存在祸合关系，但弯扭祸合振动一般不会威胁机组安全运行：在叶片丢失或滑环飞脱故障时，将产生很大的弯振，同时各转子扭振也将被激发出来，它以工倍频和前三阶固有频率为主；在各种电气故障情况下，各转子都很快被激励出较大幅值的扭振来，相应各转子弯振也发生一定的变化，但它的变化明显滞后于扭振，扭振和扭矩主要以前三阶固有频率为主。

The servicemen must grasp this system's composition structure and the principle of work, to the breakdown which occurs can carry on the correct diagnosis and the elimination, guaranteed SRS system when accident collision triggered reliably correctly, guarantees escorts while personnel's person safety this article introduced security aerocyst knowledge and so on principle of work and protective function mechanism as well as failure diagnosis and elimination, but also introduced the Audi A6SRS system's characteristic, the composition, the principle specifically.

维修人员必须掌握该系统的组成结构和工作原理，对发生的故障能够进行正确的诊断和排除，确保SRS系统在意外碰撞时正确可靠地触发，保护驾乘人员的人身生命安全本文介绍了安全气囊的工作原理和保护作用的机理以及故障诊断与排除等知识，还具体介绍了奥迪A6SRS系统的特点、组成、原理。

The misaction and nonaction of protection can bring the immeasurable loss for power plant and power system .So the fault analysis of the unit have been a problem for a long time that worker have to face. However some recorder of unit can only matriculate the waveform such as the analysis and calculate of electric parameter that the worker want to know , find the cause of fault correctly, analysis and appraise the action of protection and automechanism.

发变组作为电力系统中重要的电力设备，尤其是大型机组，同时配套有大量不同工作原理的保护，运行工况复杂，相对事故率较高，故障种类多，故障原因各异，故障的分析、判断更加困难，对机组的安全和稳定运行极其重要，保护装置的拒动或误动，都会给发电厂或电力系统带来不可估量的损失。

The paper introduces a speedy effective way how to solve winch location jump by modifying SD drive control and PLC program after main hoist of panyi coal mine hoists appears depth indication fault.

提升机是矿井主要机电设备之一，确保其安全正常运转，提高工作效率，降低故障影响时间至关重要，文章介绍了潘一主井提升机出现深度指示故障后通过修改SD传动控制及PLC程序解决绞车位置跳变故障的一种快速有效的方法。

Safe protector-Chiller includes current overload relay , high/low pressure , oil pressure , frozen prevention , time delay , and phase voltage protector , etc .

安全装置－冷水机装有电流过载保护，高低压擎，油压擎，防冰擎，电子时间延迟，电压保护等安全装置，当发生故障时，随即发出警号及显示故障原因。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。