科学仪器事业的发展方向和前沿

从科技和产业两个角度，讨论了科学仪器事业的近期发展方向，指出世界科技发展和经济全球化与科学仪器事业发展之间的相互作用；对近期全球科学仪器科技和产业发展的前沿技术作了介绍，希望能引起我国仪器仪表业者重视，加速我国科学仪器事业的发展。     

大功率准分子激光器的智能监控系统研究

大型准分子激光器的运行控制是一个多影响因素、多控制目标，且存在本质非线性和时滞性的复杂控制系统，很难建立准确的数学模型和确定最优解。根据实际手动控制数据，采用模糊控制技术，提出了辨识模糊控制规则，给出了基于知识／推理规则的智能控制方案，即在获取的知识库引导下，完成对准分子激光器工作时的技术参数的测量，实现快速响应和较高的控制精度。实验结果表明，该装置使用方便，控制灵活，误差小，较好地解决了模型复杂的综合控制，具有较好的实用价值。     

面向重构的装配模型研究

分析了层次结构与网络结构两种装配模型，根据装配模型的应用需求，应用面向对象方法建立了满足装配信息重构与重用的信息模型，提出了相应的数据重构算法。为虚拟装配系统开发提供了合理的信息组织框架。     

并行设计环境下蜗杆蜗轮CAPP的研究

提出并行设计环境下蜗杆传动零件的CAPP系统的技术原理与实现方法 ,建立参数化特征信息模型 ,提出关联特征约束推理和特征分组的方法。采用基于特征模型的工艺设计方法 ,使特征模型能较好地应用于蜗杆传动的CAD/CAPP。     

从功率流分配探讨混合电动汽车控制策略

介绍了混合动力电动汽车的功率流分配关系以及串联式混合电动汽车的工作模式，讨论了功率分配当中的约束情况，分析了几种控制方式，并提出了复合控制策略。     

一种新型调节光靶

介绍了一种能显示管道中心的调节光靶的结构和原理。     

电子测量技术的新发展—虚拟仪器

在回顾虚拟仪器技术进步历程的基础上,介绍了虚拟仪器（VI）及其系统的构成,以及虚拟仪器的应用。虚拟仪器将计算机采集测试分析引入到电子测量领域。用数字化和软件技术极大地提高了测量的灵活性和可扩充性。     

Novel MMC microstructure with tailored distribution of the reinforcing phase

Saffil short fibre agglomerates with diameters of 0.4 mm to 1 mm have been prepared using a tumbling technique. These were packed and infiltrated with molten 6061 Al alloy to make a metal matrix composite (MMC) with a novel microstructure in which the composite spheres are randomly distributed in the fibre-free aluminium matrix. In parallel, a commercial preform made of identical Saffil alumina short fibres and having the same fibre volume faction was used to prepare a conventional MMC by the same technique. Microstructural observation indicates that, within the composite spheres, the local volume fraction of fibre decreases from the outer layer to the centre region.
The energy absorption during fracture was estimated by using a three point loading test on notched samples and was compared with that for conventional MMCs. Preliminary results suggest that this novel MMC possesses higher energy absorption capability and hence better damage tolerance. The fracture surfaces were examined by scanning electron microscopy in order to inform these experimental results.     

High-resolution electron microscope observation of interface microstructure of a cast Al-Mg-Si-Bi-Pb(6262)/Al2O3p composite

High-resolution electron microscopy was employed to characterize the interface structure of a cast Al-Mg-Si-Bi-Pb aluminium(6262)-based composite reinforced by alpha alumina particles with a trace of beta alumina in order to investigate the behaviour of alloying elements in cast composites. Except for a few primary Mg2Si particles, few reaction products were detected at the interface of Al/alpha-Al2O3 due to the unfavourable reaction kinetics during the squeeze-casting process. The Mg2Si particle has an orientation relationship with alpha-Al2O3 of [011]Mg2Si//[1210]alpha-Al2O3 (111)Mg2Si//(0006)alpha-Al2O3. A significant amount of MgAl2O4 was found on the surface of the beta-Al2O3 particles, which is in contrast to the small degree of reaction found on alpha-Al2O3 particles. MgAl2O4 and beta-Al2O3 particles have the following orientation relationship: [011]MgAl2O4//[1210]beta-Al2O3 (111) MgAl2O4//(0006)beta-Al2O3. The similar crystal structure of beta-Al2O3 to MgAl2O4 favours MgAl2O4 nucleation and growth on the surface of beta-Al2O3. Interfacial energy minimization dominates the atomic structure of the interface with the result that close packed planes and directions in the Al2O3 reinforcement and reaction products are parallel to the interfaces. Bi and Pb were found in the form of metallic nanometre particles between Al2O3 particles, or between the MgAl2O4 and Al2O3 particles, or in the open channels of beta-Al2O3 filled by the Al matrix.     

液相法制备钛酸锶铅粉的研究

研究了反应温度、酸碱度、放置时间和煅烧温度对化学共沉淀法制得的钛酸锶铅粉末的影响,探讨了其热分解过程,用XRD、SEM、DTA和EPMA对粉体进行了综合分析,得到了纯度较高的钛酸锶铅粉末.