基于粗集理论的柴油机典型故障的磨粒识别

利用铁谱技术分析柴油机的典型故障，建立柴油机的典型故障与磨粒类型的关系，在此关系的基础上，基于粗集理论确定典型故障模式识别的最优决策规则，通过试验结果验证了最优决策规则的准确，为铁谱技术的智能诊断提供了依据．     

产生苝醌类化合物真菌的化学成分及光敏活性研究

 研究菌寄生菌属真菌(Ascomycetes Hypocreaceae Hypomyces(Fr.)Tul.sp.)菌丝体的化学成分.用丙酮回流提取,用二氯甲烷和甲醇洗脱,硅胶H柱层析分离,化学与波谱学进行结构鉴定.从菌丝体中分离得4个化合物,分别鉴定为甘露醇(I),痂囊腔菌素A(II),竹红菌甲素(III)和竹红菌乙素(IV).用微生物纸片法测定了化合物II,III,IV的光敏活性.     

永磁伺服系统控制方案选择

介绍了目前广泛使用的电机调速的两种控制方案：矢量控制技术和直接转矩控制技术。简要介绍了两种控制方法的原理，并从系统控制结构、两种控制方案对系统硬件要求、控制性能等方面对两做比较，由此确定永磁同步伺服系统的控制方案，并给出两种控制方法实验的主要波形。     

地下水作用时侧向压力的计算

水土合算方法,未考虑孔隙水对土粒的浮力的影响,侧向水压力不应该乘与之不相干的土压力系数,由此会造成主动土压力偏小,被动土压力偏大;静水压力的水土分算法,在支护结构底端,基坑内外水压力不能平衡,静水压力对土压力贡献过大,造成主动土压力偏大,被动土压力偏小.理论上对水土分算和水土合算两种算法进行了论证,并提出考虑孔隙体积渗流力的水、土分算法.     

Analytical Algorithms for the Blend Ratios by Fibre-bundle Tensile Curves Part Ⅲ： The Definition Method and the Relationships between the Blend Ratio and Tensile Parameters Calculated from Different Ways

The algorithms of the strength, work, modulus and percentage methods have been introduced and discussed in Part Ⅰ and Part Ⅱ of the series papers. As the following, the percentage-function calculation and the frequency-function calculation of the definition method are defined and developed in detail. Meanwhile, the Procedures to fred the tensile parameters are analysed experimentally and involve “ED” being the average values of the corresponding tensile parameters of each bundle tensile curve measured; “EC” being the tensile parameters obtained from the averaged experimental tensile curve; and “TC” being the parameters of the theoretical tensile curve according to the corresponding nominal blend ratio. The theoretical and experimental results indicate that the blend ratio estimated by the definition method from wool/polyester blended fibre bundles has a high correlation with the actual blend ratio though the variables to be known in this method are the most of all the methods and there exist the difficulty to solve fibre bundle tensile behaviour without fibre broken in accuracy and that there are high correlations between the EC and TC data and the tensile parameters should be calculated using the EC method rather than the ED method with the exception of the bundle initial modulus. The relationships between blend ratios and the tensile properties of blended fibre bundles can be used to select the optimum blend ratio of blended tops or yarns.     

Study on Dynamic Heat-moisture Transfer Properties of Summer Fabrics Using Microclimatic Method

The temporature and humidity of the microclimatic zone of summer fabrics in the course of sweating - evaporating -drying were measured with an apparatus specially made for the purpose. It is pointed out that temperature and humidity changes in quantitative perspiration evaporation process in the microclimatic zone can express the dynamic heatmoisture comfortability. Characteristic values include temperature decline speed, temperature rising speed, humidity rising speed, humidity balance value, and humidity decline speed. Fabrics with good air permeability are beneficial to improving comfortability of summer fabrics, while temperature rising speed and humidity decline speed in the microclimatic zone of thick and heavy fabrics with good hygroscopicity are relatively slow. Through comparing fabrics‘ dynamic heat-moisture curves obtained respectively with Microcllmatic Method and Heat Loss Method, the two methods are identical essentially.     

SPE电极上Pt单组分及Pt—Au双组分还原态CO2阳极剥离 …

采用循环伏安法,对ＳＰＥ Ｐｔ电极以及ＳＰＥ Ａｕ－Ｐｔ电极上还原态ＣＯ２的电化学氧化行为研究表明,此类电极的电化学特性与光滑Ｐｔ电极一致：ＣＯ２在氢原子吸附电位区０￣２５０ｍＶ（ｖｓ．ＲＨＥ）处,可与电极上化学吸附的氢反应,生成还原态的ＣＯ２,通过线性扫描,还原态ＣＯ２即发生一不可逆电化学氧化过程（阳极剥离）。在ＳＰＥ Ｐｔ系列及ＳＰＥ Ａｕ－Ｐｔ系列上ＣＯ２的电化学行为表明,当ＳＰＥ Ｐｔ系列     

等温淬火奥贝球铁在块—环法磨损条件下在抗磨性

用块－环法研究了奥球铁和下贝球铁的磨损性能,根据试验结果讨论了奥贝球铁和下贝球铁在不同磨损速度和载荷条件下的磨损变化情况,得出了一个与传统不同的结论：虽然下贝球具有较高的硬度,但奥贝球铁比下贝球铁的抗磨性好．     

齿轮连杆机构结构分解的研究

提出一种齿轮连杆机构的数学法－三色图法,将型转化理论拓广于齿轮连杆机构的分析中,使任一齿轮连杆机构都可以分解为单构件和广义双杆组。从而解决了齿轮连杆机构分析过程中高级杆组求解难的问题,为齿轮连杆机构的通用运动分析奠定了基础。     

子域样条有限元与无限元耦合法分析相邻建筑物的相互作用

运用惯性耦合法分析地基上相邻建筑物的相互作用，并将样条有限元法分析直接承受建筑物的桩基和土体，用半解析无限元法分析外围半无限土体。此方法不仅具有输入数据少，计算工作量小，并且避免了人为有限边界的影响。数值计算表明，当两结构相邻较近时，单体与双体在自振特性，尤其在位移、基底总剪力等方面均有差异。