Fuzzy Control of Semi-Active Suspension Based on 7-DOF Tracked Vehicle

On the basis of analyzing the system constitution of tracked vehicle semi-active suspension, which consists of electrorheological (ER) damper and shape memory alloy (SMA) spring, a seven degree of freedom (7-DOF) dynamic model is established. The change of the elasticity of SMA spring and the characteristics of the ER shock absorber are studied. In addition, the study about fuzzy control logic is also carried out. Simulation of a C grade road under random excitations and definite disturbances is performed. Simulation result shows the fuzzy control strategy, which is used in the control of semi-active suspension system with ER damper and SMA springs, is effective, stable and reliable.     

Giant Magnetostrictive Material Exciter for Panel Loudspeaker

The exciter component in a panel loudspeaker has a profound effect on the overall performance of the system. The equivalent circuit analysis of the combination of giant magnetostrictive material exciter and distributed mode panel is introduced and how exciter parameters influence panel lo＇udspeaker＇ s performance is discussed. Numerical predictions are given in order to show how these influences are manifested.     

生物脱氮研究及其在处理焦化废水中的应用

以文献为基础，讨论了硝化／反硝化生物脱氮的原理、方法、有关动力学研究及其在处理焦化废水中的应用。认为应用固定化细胞技术和活性炭－生物联合技术的Ａ／Ｏ工艺会成为处理焦化废水的一种有效方法，Ｙａｎｔａｒａｓｒｉ的自由能模型对稳定复杂的硝化单元操作有重要的指导作用。     

连续冶炼冶金焦工艺初探──(Ⅱ)特点和有待研究的问题

本文论述了连续混热式冶金焦炉炼焦新工艺的特点，对连续炼焦工艺几项预期指标与现有几种焦炉做了比较，并指出了连续炼焦工艺有待解决的问题。     

HPF焦化脱硫废液资源化处理技术开发

总结讨论了目前国内外用于HPF脱硫废液处理的技术,讨论分析表明:HPF脱硫废液处理技术主要可分为盐提取处理技术和盐分解处理技术两大类,在介绍各种技术的基础上分析了其各自的优缺点;同时,介绍了课题组开发的一种资源化处理脱硫废液的新技术,该技术操作过程简单,条件容易控制,在使处理后废水满足生化处理入水口要求的同时得到工业优等的硫氰酸铵产品.     

天然气吸附材料研制及水合物技术进展

分析讨论了炭质吸附剂、金属有机骨架材料、沸石的研制现状和存在问题,详细介绍了天然气水合物存储新技术,提出将多孔材料与水合物技术相结合是提高存储密度的新思路。     

Vibration Control of Vehicle Suspension System by Electrorheological Damper

Over the past three decades ,vibration control ofvehicle suspension systems has always been the sub-ject of extensive research in order to provide a goodride comfort performance for passengers . The pri ma-ry objective function of any vehicle suspension systemis toisolatethe bodyfromroadway disturbances[1 -5].Generally three types of suspension systems are used,namelythe fully active ,the semi-active and the pas-sive control systems . Compared with the other twosuspensions,the semi-active susp…     

亚临界H2O-CO体系改性长焰煤的黏结和热解特性研究

长焰煤通过加氢改性转化为黏结性煤,有利于提高其综合利用效益和扩大炼焦煤资源。利用亚临界H2O-CO体系对印尼长焰煤进行改性,考察了不同反应温度下改性煤的热解特性,并利用索氏抽提、热重（TG-DTG）和傅里叶变换红外光谱（FTIR）探究了煤结构变化对其热解产物分布规律的影响。结果表明:长焰煤在亚临界H2O-CO体系中改性后黏结性显著提高,获得的改性煤黏结指数（GRI）随反应温度升高至340 ℃而达到最大值;改性煤中氢含量和索氏抽提可溶组分收率的提高,使得改性煤热解焦油产率升高而热解气产率降低,同时改性降低了煤中氧含量,导致热解水产率降低;改性煤中沥青烯组分提高,将抑制其快速热解失重,而改性处理后脂肪族-CH、-CH2和-CH3伸缩振动吸收峰增强,导致改性煤热解气H2和CH4体积分数均高于原煤。     

关于正确理解堆芯损坏概率的进一步讨论

堆芯损坏概率/频率这一指标经常用在关于核电安全性的讨论中,其数值意义及概念的认识或理解尚需进一步明确。本文利用概率论相关方法,在深入了解堆芯损坏频率（CDF）获得过程的基础上,讨论了利用泊松过程来计算堆芯损坏概率（CDP）的方法。并说明了直接叠加单个堆年CDF来估计CDP,是一种常见的近似方法,其误差会随着堆年数的增多而变大,应明确其适用范围。计算表明：在10%误差的条件下,对CDF为1×10^－4/(堆•年)的堆,用近似方法可讨论到约2000堆•年,而对CDF为1×10^－5/(堆•年)的堆,则可讨论到约20000堆•年。同时在使用该指标时,不能忽略反应堆发生堆芯损坏这一事件本身的随机属性。