石英陶瓷注凝成型影响因素的研究

介绍了熔融石英陶瓷的注凝成型机理及其工艺过程,分析讨论了影响熔融石英陶瓷注凝成型的主要因素,通过研究确定了合理的制备工艺参数.     

浅议Excel电子表格应用中的常见问题

Excel2000电子表格作为日常的办公软件被广泛使用，对使用者来说，一学即会，但是在具体使用时，常常会遇一到些无法处理的问题，这就要求使用者加强对Excel2000电子表格全面系统的学习，才能极大地提高工作效率。     

烧碱蒸发装置的改进

通过改进工艺流程，科学确定加热面积的配比，合理选择采盐泵等技术改进措施，提高了生产强度，满足了高气压的生产条件，延长了洗效周期，减少了设备的腐蚀，提高了成品碱的质量，满足了生产联二脲的要求并降低了汽耗和电耗，年可节约ll0万元。     

PP-R、PP-B管材料专用色母粒的研制

采用无毒、耐候性好、热稳定性高的颜料制得PP－R、PP－B管材料专用色母粒，考察了色母粒对PP－R、PP－B管材料力学性能、耐热性、耐光性、卫生安全性的影响。结果表明：该色母粒对PP－R、PP－B管材专用料的力学性能影响不大，采用该色母粒无需改变PP－R、PP－B管材的生产工艺。     

用于电脑磁头生产的电子级NMP质量监控方法

电子级NMP溶剂在电脑磁头生产中用作脱蜡剂、脱脂剂和污渍清洁剂。介绍了适用于电脑磁头生产的电子级NMP溶剂的质量控制项目(纯度、色度、水分、阴离子含量、硅油、微粒、pH值、重金属、有机痕量杂质、腐蚀试验等)和测试方法。     

Lanaset染料染色性能的研究

实验结果证明了硫酸铵替代Albegal SET的可能性，其染色牢度和匀染性都达到了Lanaset染色体系要求的标准,并具有更高的上染率。与中性染料相比，条染复精梳制成率提高3.6％．纺纱制成率提高4.0％。     

应用基于粗集的模糊神经网络进行软测量建模的研究

提出将软测量建模与数据挖掘方法相结合的思想。针对模糊神经网络输入维数高，且对应的神经网络是权值不完全连接的网络，结构简单、训练速度快。将该方法用于催化裂化装置的轻柴油凝点的估计，取得良好的效果。     

采用JFM7201的北斗基带数字接收通道设计

北斗卫星导航定位系统是我国自行研制的,它采用直接序列扩频技术,只有当扩频码完全同步之后才能解调出信息码。因此,对于扩频码的捕获和跟踪就成为一个非常重要的环节,基带信号处理就可实现这样的功能。JFM7201芯片是一款基带信号处理芯片,与相关的处理器配合,可以实现信号的捕获、跟踪、解调以及输出位置、速度和时间的相关信息,是北斗接收机一种比较好的实现方式。     

Asynchronous fault detection filter design approach for discrete‐time switched linear systems

This paper is concerned with the problem of the fault detection filter design for discrete‐time switched linear systems with average dwell‐time. The designed fault detection filters are also switched systems, which are assumed to be asynchronously switched with the original switched systems. Improved results on the weighted l₂ performance and the H _? performance are first given, and the multiple Lyaounov‐like functions during matched period and unmatched period for the running time of one subsystem are used. By the aid of multiple Lyapunov‐like functions combined with Projection Lemma, the FD filters are designed such that the augmented systems under asynchronous switching are exponentially stable, and the residual signal generated by the filters achieves the weighted l₂‐gain for disturbances and guarantees the H _? performance for faults. Sufficient conditions are formulated by linear matrix inequalities, and the filter gains are characterized in terms of the solution of a convex optimization problem. Finally, examples are provided to demonstrate the effectiveness of the proposed design method. Copyright © 2012 John Wiley & Sons, Ltd.     

Decentralized weighted control for a class of large‐scale systems with multi‐modes

In this paper, the control synthesis problem for a class of large‐scale systems with multi‐modes that are called large‐scale switched systems is addressed. By introducing the concept of decentralized switching signal and the relevant decentralized average dwell time, the asymptotic stability and weighted ?₂ gain performance are investigated. It should be noted that the decentralized switching covers general switching cases for large‐scale switched systems, namely, it admits both time‐dependent switching signal and arbitrary switching signal blended in the decentralized switching. Then, on the basis of the analysis results, the decentralized weighted control scheme including state feedback controller gains and switching signals is studied. Several design algorithms are proposed to meet different controller design problems. Finally, numerical examples are provided to illustrate theoretical findings within this paper. Copyright © 2013 John Wiley & Sons, Ltd.