CST在带式输送机电控系统中的应用

本文重点介绍了可控起动装置(CST)的结构、工作原理、电气接口及其选型,描述了起停车流程与上位机软件的构成及功能。该装置可靠性高,稳定性好,已在带式输送机电控系统中得到广泛应用。     

汽车碰撞吸能装置的螺旋传动稳健优化研究

为避免一般汽车实际碰撞的不稳健现象,通过建立稳健优化设计的数学模型,运用Matlab优化工具箱对汽车碰撞吸能装置(CST)螺旋传动问题进行稳健优化设计求解,并给出了相应的算法程序,避免了常规求解过程中繁杂的工程算法语言编程.研究表明,该稳健优化设计方法省时高效、方便可行,结果稳健可靠,产品性能得到了提高.     

龙伯透镜的仿真优化设计

针对龙伯透镜的诸多优点,设计了适用于工作频段8～13 GHz的平面波激励源与9～11 GHz的喇叭馈源激励源的龙伯透镜。依据龙伯透镜的设计思想和方法,并结合遗传算法,对其进行优化设计,达到最优化效率。通过CST软件对龙伯透镜的几何尺寸进行仿真,得出了龙伯透镜的各种性能指标。仿真结果表明：平面波激励源经龙伯透镜作用后很好的聚焦于一点,而喇叭馈源在其作用后则得到平面波的特性。     

机柜布局对方舱屏蔽效能影响的研究

电磁屏蔽方舱作为机动式指挥系统的车载运行环境,内有多种电子设备。为了保障舱内的电磁环境满足电子设备正常工作的需要,方舱必须具有良好的电磁屏蔽性能。方舱内的机柜布局是影响电磁屏蔽方舱屏蔽效能的一个重要因素。通过对电磁屏蔽方舱屏蔽效能的测试分析和CST仿真分析,定量分析了机柜布局对电磁屏蔽方舱屏蔽效能的影响,并对机柜的布局...     

煤矿大型带式输送机常用软启动装置的比较

对煤矿大型带式输送机常用的软启动装置进行了分析比较,分别阐述了带式输送机采用调速型液力耦合器、CST可控启动、变频启动3种启动方式的工作原理和优缺点,并说明了如何对煤矿带式输送机软启动装置进行选择。     

A novel covert speech communication system and its implementation

In this paper, a Covert Speech Telephone （CST） is designed and implemented based on the information hiding technique, which works on the internet. To solve the large embedding capacity problem for real-time information hiding, a steganographic system combined with a watermarking scheme is proposed, which skillfully transfers the secret speech into watermarking information. The basic idea is to use the speech recognition to significantly reduce the size of information that has to be transmitted in a hidden way. Furthermore, an improved DFT watermarking scheme is proposed which adaptively chooses the embedding locations and applies the multi-ary modulation technique. Based on the GUI （Graphical User Interface） software, the CST operates on both ordinary and secure mode. It is a completely digital system with high speech quality. Objective and subjective tests show that the CST is robust against normal signal processing attacks and steganalysis. The proposed scheme can be used in terms of military applications.     

电子设备对于电磁脉冲的屏效研究

应用CST分析带有孔缝的屏蔽体的电磁耦合规律.对不同形状以及不同位置的孔缝对屏蔽体屏蔽效能的影响进行分析,并对电磁干扰对内置电路的影响进行了分析,利用外部电磁干扰对内置电路导线上的感、应电压来分析电磁耦合对电路的影响程度.     

Ion Exchange of Selected Group II Metals and Lead by Crystalline Silicotitanate and Competition for Cs Exchange Sites

ABSTRACT

A series of batch contact tests were conducted to evaluate the exchange behavior of Ba, Ca, Pb, and Sr onto crystalline silicotitanate (CST) in support of an expedited Cs removal and pretreatment system at the Hanford site. Binary Na/M²⁺ and ternary Na/Cs/M²⁺ isotherms were generated to understand selectivity, capacity, and competitive impact of each analyte on Cs uptake from a simple 1 M NaOH/4.6 M NaNO₃ simulant. Analyte loading from a 0.1 M NaOH/5.5 M NaNO₃ simulant was assessed to determine the effect of hydroxide concentration on binary Na/M²⁺ isotherms. Results from binary and ternary isotherms indicated that Group II metals Ca, Sr, and Ba (and Pb) do not impact CST performance toward Cs removal at concentrations expected in Hanford tank-waste supernate.     

软起动装置在带式输送系统中的应用

介绍了带式输送系统的软起动装置 ,讨论了CST、PSI软起动装置的主要功能和工作原理 ,及其同机械部件的关系和经济效益     

井下CST顺槽带式输送机的应用

神东公司在高产高效模式下,积极引进国外先进技术和装备,CST驱动的顺槽带式输送机就是其中一项。利用CST的软启动技术,确保了煤炭运输的连续化。利用SLC平台技术,将带式输送机的启停、输送机的沿线保护、CST的张力调节和多电机的功率平衡等融合一体,保障了系统运输的可靠性。