我国衡器方面的检定规程、标准与国际建议的接轨情况

我国加入WTO后,执行WTO的准则,检定规程和产品标准应积极采用OIML国际建议,本文介绍了衡器OIML国际建议及我国的衡器计量检定规程和衡器产品标准采用国际建议的情况。     

铁路轴承成品清洗机设计

针对铁路轴承对清洁度的特殊要求,设计了铁路轴承成品清洗机,详细介绍了该清洗机在动态下清洗成品轴承的原理及性能。     

飞机机械成品试验信息管理系统设计与应用

分析了航空企业飞机机械成品试验的现状,结合企业信息化管理的发展趋势,对飞机机械成品试验的流程进行梳理,基于ASP.NET技术研究开发了某企业飞机机械成品试验数据收集及信息管理系统,以实现飞机机械成品试验的流程化、数字化及显性化管理,避免因试验台管理不善造成的质量问题,实时掌握试验台状态,促进形成自主管理模式。     

如何保证动态检重秤的计量精度

本文从动态检重秤这一在线自动重量检测设备的结构、工作原理和保证精度的方法等几个主要方面,以图文结合的形式着重阐述了怎样保证动态检重秤的计量精度。     

从商品预包装技术演变看电脑组合秤技术最新发展

本文纵观了我国商品预包装技术演变过程，着重介绍了代表当今世界自动定量包装秤最新技术水平的电脑组合秤产品，并试图从产品的性能原理、技术特点到最新技术发展的介绍，使读者能对电脑组合秤有进一步的了解。从而推动我国商品预包装技术与国际接轨。     

Development of stepwise tolerances for efficient verification of automatic checkweigher

The aim of this study is to calculate the risks of automatic checkweigher verification according to the specifications of the international recommendation OIML R51 developed by the International Organization of Legal Metrology (OIML) and to propose an alternative method for performing the verification efficiently.The risks posed by the OIML R51 method to the consumer and producer are calculated using the Monte Carlo method. The OIML R51 method was used to develop an alternative method with improved efficiency and almost equivalent risks. The alternative method involves calculating the sample mean and standard deviation of the error and makes acceptance/rejection decisions after weighing every 10 times. The tolerances of the alternative method are stepwise with the upper and lower limits. After weighing every 10 times, the sample mean and standard deviation were calculated, and if they were both less than the lower tolerance limit, the test was completed and a pass decision was made. Conversely, when the mean or standard deviation exceeded the upper tolerance limit, the test was completed and a failed decision was made.The Monte Carlo method was used to calculate the risks and a reduction in the required number of weighings by the alternative method.The alternative method was applied to an actual instrument to evaluate the efficiency of the method. For the instrument used in this study, the expected value of the required number of weighings is 20 in the weighing range of 400 g or more and one-third of the number stipulated in the international recommendation. This means that significant labor savings are possible.     

提高数控线切割机加工菊切齿胎座成品率的方法

在数控线切割机试验切割菊切齿结束后,发现试验用的菊切齿胎座成品率十分低,分析具体原因,找出了主要影响因素,采取措施提高了成品率。     

OIML R51国际建议对自动检重秤的检测要求

本文介绍了OIML R51国际建议对自动检重秤的计量要求和检测方法.     

基于多加速度传感器的动态检重秤抗振方法研究

针对检重秤测量过程中受振动干扰影响严重的问题,提出一种基于外部输入非线性自回归模型(NARX)的动态神经网络系统辨识的抗振新方法。通过加速度传感器的冗余分布,对检重秤系统的振动特性进行估计,结合空载传送情况下称重传感器由振动干扰产生的误差,利用动态神经网络对振动干扰信号进行自动辨识,建立振动信号分析模型,用以匹配消除动态检重信号中的振动扰动。在共振状态下,与滑窗滤波、自适应陷波等传统抗振方法进行的仿真与测试实验对比,证明基于多加速度传感器的动态称重抗振性能更优,最终实现运行速度达2 m/s,最大秤量200.0 g,满足国家标准《GB/T 27739-2011自动分检衡器》XIII级要求的检重秤搭建。     

衡器与学术

本文简要叙述了我国衡器业与衡器学术界相伴发展的过程以及学术刊物、学术会议、学术团体对我国衡器产业做出的巨大贡献。