一种基于现场数据的保护特性分析软件

针对通常故障录波装置提供的故障数据分析软件难以满足继电保护特性分析要求的问题 ,提出了录波数据处理的主要算法 ,设计了专门的保护特性分析软件 ,可用于新型保护原理的测试和现场继电器的校验     

酱香专用调味酒的生产及在浓香型白酒中的调味作用

采用特殊工艺生产的酱香专用调味酒有两大特点：一是酱香突出，陈味好，酒体醇厚、丰满、细腻协调、回味悠长；二是香味物质成分种类繁多，含量丰富，这二者决定了它对浓香型白酒调味时能够较好地掩盖异杂味，使酒体更加醇厚、丰满、味长。     

LYP1050轮转胶印机控制系统设计

In order to meet the demand of printing market for high-speed, high-quality and highefficiency offset presses, a LYP1050 rotary offset press control system is designed. Firstly, taking the Inovance AC810 motion controller as the main controller and the Inovance IT6000 series touch screen as the human-computer interaction interface, the hardware platform of the LYP1050 rotary offset press control system was built by combining the servo drive unit. Then, the methods including the multi-axis synchronization control, the tension control of closed-loop speed and winding taper and the automatic registration control for the LYP1050 rotary offset press were proposed;at the same time, the lower computer program and human-computer interaction interface of the LYP1050 rotary offset press control system were designed. Finally, the reliability of the designed control system was verified by collecting the registration error of the LYP1050 rotary offset press prototype during actual operation. The test results showed that the registration accuracy of this rotary offset press could be controlled within ±0.05 mm, which met the registration requirements. The designed control system is safe and reliable, with good synchronization, high color registration accuracy, low failure rate, and wide versatility, which can provide references for the design of the similar rotary offset press control system. © 2021. All rights reserved.     

微波治疗仪原理分析及维修

本文在分析微波治疗仪基本原理的基础上,简要介绍微波治疗仪的结构特点。通过两例故障检测和维修过程,阐明在资料短缺的情况下,微波治疗仪维修的基本思路和方法。     

逛街偶拾

欣闻重庆八一路好吃街重新开街，迫不及待地邀约新朋旧友故地重游。余在逛街时寻得一些若明若暗的感觉。好吃与“好吃”国语中好吃和“好（hào）吃”是两个不同的概念。某款食品味道好，令食者满意，就誉为好吃；某个人很贪吃，嘴很谗，则被贬之为“好吃”，如“好吃懒做”、“好吃婆娘”等等。而在重庆人眼里，好吃与“好吃”是相互联系的。好吃是食品的本质、内涵，“好吃”则是懂吃、会吃、能吃的谐称。有好吃的东西，不吃白不吃。你看这边，食街上男女老幼手里端着麻辣烫，嘴里嚼着串串香，个个笑逐颜开；你再看那边，美食节举办“好吃…     

可再生能源发电的展望

21世纪能源结构将会发生根本的变化。寻找和开发利用清洁高效的可再生能源，将是世界能源发展的必然趋势。文章介绍了国内外新能源发电技术的现状与前景，针对中国所面临的挑战，提出了可再生能源发电问题的建议。     

电视能否成为艺术(上)

本文探讨了电视的艺术性,论述了电视成为艺术的四个不可或缺的先决条件,即以艺术为目的、具备转而成为艺术的表现手段、电视制作团体的主体由艺术家组成,以及拥有自身的理论体系和健全的批评机制.     

电视节目场景设计创作与体现的部分冲突

电视节目场景设计在审美意象物态化的过程中,审美意象构思的表达预期,与物质体现中的材料、工艺、技术限制,形成创意与体现中产生冲突。本文扼要地就比较常见又比较突出的三个方面开展探讨,即艺术构思与材料与工艺的冲突、传统场景制作工艺与现代工业技术的应用冲突、场景整体艺术构思与布景数码影像局部体现的冲突。     

SPWM型逆变器驱动感应电机电压谐波分析和脉动转矩仿真

文章在SPWM型逆变器驱动感应电机仿真的基础上,分析了输出电压谐波分布的特点和幅值的变化规律。并对变频器供电下感应电机输出转矩进行了研究,得出了转矩脉动频率和谐波之间的关系。结果表明基于SPWM供电会产生较大的转矩脉动,影响电机运行性能。