酸增殖源及其在化学增幅抗蚀剂体系中的应用

介绍了酸增殖机理、酸增殖源的种类、典型化合物在化学增幅抗蚀剂体系中的应用及对灵敏度的提高 ,提出在计算机直接制版版材研究中的应用     

向家坝右岸电站水轮机低水位运行性能预测分析

以向家坝右岸电站水轮发电机组模型试验数据为基础,对其在初期低水位状态下运行的水力特性进行了初步预测,并通过低水位下水轮机实际运行试验数据与模型试验预测结果的对比分析,验证了模型试验预测的准确性,可以作为向家坝右岸水轮发电机组在蓄水初期低水位下运行情况的初步参考依据。     

Decentralized control: Status and outlook

This paper reviews state of the art in the area of decentralized networked control systems with an emphasis on event-triggered approach. The models or agents with the dynamics of linear continuous-time time-invariant state-space systems are considered. They serve for the framework for network phenomena within two basic structures. The I/O-oriented systems as well as the interaction-oriented systems with disjoint subsystems are distinguished. The focus is laid on the presentation of recent decentralized control design and co-design methods which offer effective tools to overcome specific difficulties caused mainly by network imperfections. Such side-effects include communication constraints, variable sampling, time-varying transmission delays, packet dropouts, and quantizations. Decentralized time-triggered methods are briefly discussed. The review is deals mainly with decentralized event-triggered methods. Particularly, the stabilizing controller–observer event-based controller design as well as the decentralized state controller co-design are presented within the I/O-oriented structures of large scale complex systems. The sampling instants depend in this case only on a local information offered by the local feedback loops. Minimum sampling time conditions are discussed. Special attention is focused on interaction-oriented system architecture. Model-based approach combined with event-based state feedback controller design is presented, where the event thresholds are fully decentralized. Finally, several selected open decentralized control problems are briefly offered as recent research challenges.     

248nm深紫外光刻胶

本文从化学增幅技术的产生，深紫外248nm胶主体树脂及PAG发展历程、溶解抑制剂、存在的工艺问题及解决途径多个方面综述了深紫外248nm胶的发展与进步．     

挖沙船的变频节能改造分析

挖沙船上主电机在采用变频调速以前,多用星三角起动或自耦减压起动方式。这种启动方式起动电流较大,导致所选用的柴油发电机的容量过大。采用变频调速以后,可以减小电动机的起动电流,降低柴油发电机的容量,减少前期投资,给企业带来可观的经济效益。     

洛河电厂6kV厂用电源双向快速切换

由于快切装置生产厂家只能提供一种逻辑,无法满足"厂网分开,竞价上网"后降低成本的要求,为此对厂家装置进行改进。针对以上要求,提出增加一套快切装置(称为反切柜)用于备用段自投。用这套快切装置进行两台机组与备用段电源开关之间的切换,通过设定的转换开关进行选择,并增加相应逻辑。这样避免了使用购网电量。同时实现无论哪台机跳闸备用电源均能投入运行。     

发电机失磁故障典型判据分析

介绍发电机失磁对电力系统及发电机本身造成的危害,阐述典型判据分析发电机失磁故障的原因及采取的方案措施．     

基于单片机的同步发电机自动并列装置设计

同步发电机与电网大系统进行并列是一项非常复杂关键的任务,阐述了同步发电机并列的条件及传统手动并列验证装置及方法。为了使同步发电机在实验室条件下,准确、快速地与电网大系统并列,介绍了一种以AT89C51单片机为核心的同步发电机自动并列装置。分析了该系统的硬件组成及软件设计,该并列装置并网时具有快速、准确等优点。     

发电机误上电保护中逻辑电路应用及测试方法

发电机误上电保护是发电机变压器组保护中逻辑判据较为复杂的一种保护类型,在测试过程中有一定的难度。本文通过对发电机误上电保护的调试和检测,总结出实用的逻辑电路并提供相应的测试方法。对有类似微机保护装置的发电厂、变电站、电力职业院校及电力培训中心也有一定借鉴意义。     

风力发电机电磁场谐波分析及槽配合选择

在电机设计中槽配合的选择尤为重要,这其中就涉及到谐波分析,对双速交流电机电磁场谐波进行了数理分析,并建立了模型,其中齿谐波的分布成为准确分析谐波的关键所在,最后通过易语言实现了电磁分析的可视化编程,并在系列风力发电机的实际工程中,用此程序优化计算,最终确定了系列风力发电机的恰当定转子槽配合为72／82。