一种基于光电识别的插卡式电子开关的设计

介绍了利用光电识别原理来制作的“基于光电识别的插卡式电子开关”，是在原有宾馆客房IC卡的任一面，设定好规定的位置上，印制上反射光线的白点和吸收光线的黑点的图案，IC卡插入开关的相应位置有两只反射和接受红外线的器件，读取相应的高低电平，经过逻辑电路的处理，和原来开关一样驱动继电器而输出电压。改制后的插卡取电开关具有只能用宾馆提供的钥匙IC卡来开门并务必用它开通客房的用电开关，才能正常点灯或使用电器；改变了原来进门后用名片或其它物品来打开用电开关，出门时又不关电源带着钥匙卡就走的现状；既节省了电能又消除了安全隐患，用于宾馆的客房，真正做到一卡通。有一定的使用、推广价值和发展前景。     

注射成型技术进展

介绍了注射成型机、注射成型工艺的一些新进展，重点介绍了电动式注射成型机、预柱塞式注射成型机、往复式成型机、专用成型机等一些新式注射成型机；同时介绍了超高速注射成型、薄壁注射成型、复合注射成型工艺的特点。     

Market penetration analysis of electric vehicles in the German passenger car market towards 2030

There is currently intensive public discussion of fuel cell electric vehicles (FCEV) and other electric powertrains, such as battery electric vehicles (BEV), plug-in hybrid electric vehicles (PHEV) and hybridized combustion engine vehicles (HEV). In this context, the German government has set the target of one million electric vehicles on the road by 2020, and six million by 2030 [1]. The goal of this paper is to identify the possible market share of electric vehicles in the German new car fleet in three scenarios in the timeframe from 2010 to 2030. The VECTOR21 vehicle technology scenario model is used to model the fleet in three scenarios. In the reference scenario with business-as-usual parameters, 189,000 electric vehicles will be sold in Germany by 2020. Scenario two with purchase price incentives from 5000 EUR, high oil prices, and low prices for hydrogen and electricity will result in 727,000 vehicles. In the last scenario with substantial OEM mark-up reductions and external conditions as in the business-as-usual scenario, 3.28 million vehicles will be sold.     

Synchronous electric drive of an elevator operating in close control system

A sample synchronous motor with permanent magnets has been tested in the model of a gearless drive and the results are presented. With the help of mathematical simulation, comparative calculations of synchronous motors with different geometrical sizes are carried out for two types of elevators.     

Pilot study of countercurrent cold and mild heat extraction of sugar from sugar beets, assisted by pulsed electric fields

This study describes experiments on pulsed electric field (PEF)-assisted water extraction of sugar from sugar beet using a pilot countercurrent extractor with 14 extraction sections. Cossettes were prepared from sugar beet by industrial knives and PEF treatment of the cossettes was done with electric field strength E varied between 100 and 600 V/cm. The total time of PEF treatment was t_PEF = 50 ms. The effects of the main extraction parameters (temperature of extracting water and draft) on the extraction kinetics, as well as on the juice and cossette (pulp) characteristics, were investigated. The temperature of extraction from PEF-treated cossettes was varied from 30 to 70 °C; the draft was varied from 120 to 90%. The principal possibility of cold (at 30 °C) and moderate thermal (50-60 °C) extraction of sucrose from sugar beet cossettes treated by PEF was confirmed on the pilot countercurrent extractor. The purity of the juice obtained by cold and moderate thermal extraction was not lower than the purity of juice obtained by conventional hot water diffusion at 70 °C. The sugar beet pulp can be well exhausted by cold or mild thermal extraction of cossettes treated by PEF. Decrease of draft to 100-90% permitted increasing of the extracted juice concentration, but the cossettes were worse exhausted. The pulp obtained by cold extraction of PEF-treated cossettes had dryness >30%, which was noticeably higher than dryness of the pulp obtained by conventional hot water extraction technique.     

电力行业质量管理奖如何评审"战略"的体会

本文主要论述了笔者在参加电力行业质量管理奖的评审活动中,对"战略"评审的一些体会.其中包括两项要点:战略的制定过程,战略和战略目标.笔者通过对现场评审的难点,不知如何表达清楚"如何展开",不知收集什么样的证据证等经常遇到问题,就"战略"的评审要点,主要的证实性作材料等方面论述需要评价战略及战略目标的制定的主要方面.同时...     

工业企业电气自动化系统的发展探讨

介绍电气自动化的定义，分析我国工业企业的电气自动化系统现状，然后在此基础上探讨工业企业电气自动化系统的发展趋势。     

Ti55钛合金整体壁板电脉冲辅助压弯成形失稳研究

高温钛合金网格筋壁板相较于传统的铝合金筋壁板结构效率更高,但是室温下钛合金整体壁板难以成形。利用电流电致塑性效应和焦耳热效应能有效降低成形载荷、提高成形极限,并且能有效避免钛合金在加热中被严重氧化。本研究建立了Ti55整体壁板电脉冲辅助压弯成形的电-热-力耦合有限元模型,并对不同成形工艺参数和壁板几何参数进行模拟。结果表明:在壁板两端施加8 A/mm~2电流密度时,压弯成形温度区间比较合适。整体壁板随着筋条高度的增加,失稳屈曲程度越来越大,筋条失稳时所需的临界载荷越小,筋条的稳定性越差。腹板厚度主要影响筋条的温度从而影响筋条的失稳情况。整体壁板纵向筋条间距增大,筋条稳定性越差,筋条失稳屈曲也越严重。     

输电线路耐张线夹的数字射线检测

耐张线夹的压接质量直接关系输电线路的安全。通过设计相应检测工装、改良检测设备等措施,成功利用数字射线(DR)技术,对耐张线夹的压接质量进行了检测,既满足了相关标准的要求,又提高了检测效率,为输电线路的安全提供了保障。     

45Mn钢件表面电镀霉斑的形成原因分析

针对45Mn钢件表面电镀出现的霉斑现象,分析了钢板的化学成分、原始组织及表面质量。结果表明,钢的化学成分和微观组织未见异常,满足标准要求,但钢板表面粗糙、氧化脱碳严重,形成微裂纹是电镀不合格的主要原因。通过优化生产工艺,提高表面质量,可以避免电镀霉斑的形成。