故障分析

Based on the projectile-borne mechanism angular motion simulation device, a new testing method for the projectile-borne mechanism motion test is provided, which is based on the ARM embedded system.

研究弹道环境下弹载机构的运动规律是引信等弹载机构设计、研制、故障分析和性能评价的重要依据和基础'了。

The inspection software adopts Visual Basic programming language and has real time sample and spectrum analysis function.

监控软件采用VISIUAL BASIC软件进行开发，具有实时采集、频谱分析和故障分析的功能。

Failure analysis: post-calculation after investigation found that there is no failure of comparison of smooth surface, there is no gubernacular acanthopanacis (surface of a piece of a little acanthopanacis).

故障分析：事后经过现象调查发现没有发生故障的轮胎表面比较光滑，没有胎刺（轮胎表面一根一根的小刺）。

Failure Analysis: Failure after reinstalling the system does not rule out the possibility seems to be hardware problems.

故障分析：重装系统后故障未排除，看样子是硬件出现了问题。

The software architecture of parameter sharing model was establish in order to accomplish the design of the dynamic signal analyzing measurement system with poly-morphism function according to this design clou.

根据该设计思想建立了共享参数模型的软件体系结构，完成了具有多态功能的动态信号分析系统的设计，并应用该系统生成了共振解调分析功能，对齿轮振动信号进行了正确的故障分析，该研究为分析仪器设计提供了一种全新的开发模式。

And the implementation approach by hardware and software is also expounded. By integrating a lot of knowledge on sensing technique, signal analysis, network communications, control technique and expert system , this system can feed back the on - line state of blower fan on real time so as to deal with faults immediately.

该系统集成了传感技术、信号分析技术、网络通信技术、控制技术和专家系统，实现了风机实时振动信号的自动采集，并通过计算机进行振动信号的处理和故障分析，能够及时反馈风机的在线状态，从而进行及时维修。

The math model of the movement,flux and control system of position pump was established by analyzing its working principle,and its hydraulic system simulation model was established based on AMESim.The pressure and flux pulsation of the position pump was analyzed,and the pressure and flux was calculated by simulation when there are sign of wear for the position pump and system flux change.

分析了恒压力轴向柱塞泵的工作原理，推导并建立了液压泵压力流量和压力调节机构的数学模型，并在此基础上以AMESim工程软件为平台建立了轴向柱塞泵的仿真模型，分析了压力流量脉动状况并对液压泵在内部磨损和系统流量变化两种情况下的压力流量进行了仿真计算，对两种情况下泵的工作情况进行分析比较，为液压脉动抑制和故障分析提供了参考。

Engineering College, Air Force Engineering University, Xi'an Shaanxi 710038, ChinaAbstract: The math model of the movement, flux and control system of position pump was established by analyzing its working principle, and its hydraulic system simulation model was established based on AMESim. The pressure and flux pulsation of the position pump was analyzed, and the pressure and flux was calculated by simulation when there are sign of wear for the position pump and system flux change.

分析了恒压力轴向柱塞泵的工作原理，推导并建立了液压泵压力流量和压力调节机构的数学模型，并在此基础上以AMESim工程软件为平台建立了轴向柱塞泵的仿真模型，分析了压力流量脉动状况并对液压泵在内部磨损和系统流量变化两种情况下的压力流量进行了仿真计算，对两种情况下泵的工作情况进行分析比较，为液压脉动抑制和故障分析提供了参考。

Establishing on the foundation of the project of 'the monitoring state and maintenance assist support system of feed pump for 300MW unit, Shiheng Power Plant, Shandong', this paper's content comprise on-line monitoring and thermodynamic calculation on small steam turbine for feed water pump, and supply the necessary data for feed water pump's performance analysis, trouble analysis and small steam turbine's performance analysis, optimization, heat stress calculation and tremble monitoring.

本论文的内容是建立在&山东石横电厂给水泵状态监测与维修辅助支持系统&项目基础上，涉及大型机组锅炉给水泵驱动用小汽轮机进行在线监测和热力计算，为给水泵的性能分析、故障分析以及小汽轮机的性能分析和优化、热应力计算和震动监测提供必需的数据。

PowerWorld Simulator can intuitively and visually display the power network operation. Users can build and modify different power system models and parameters. In addition, self-explained icons and menu can perform various operations to analyze power flow, fault, contingency, economic operations of the model.

用户可以建立、更改各种电力系统模型及参数，在仿真器中进行各种操作，从而对模型进行潮流分析、故障分析及经济运行分析等。

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。