摘要：对于一类具有非线性互联项的广义互联系统 ,定义了这类系统的两种相似结构 .互联项包含不满足匹配条件的不确定性 .设计了状态反馈鲁棒控制器使系统渐近稳定 .由于控制器也具有相似结构 ,因此易于实现 .

摘要：对一类非线性系统进行模糊建模及其模糊观测器设计 ,研究了在系统的状态不可测且存在参数不确定的模糊鲁棒控制问题 ,以线性矩阵不等式的形式给出了模糊控制系统具有李雅普诺夫意义下稳定的充分条件 ,最后把所提出的方法应用到倒立摆系统进行仿真 ,仿真结果验证了该控制方法的有效性 .

摘要：提出了用规则表旋转法修改控制规则的方法 .模糊控制器通常是基于专家经验或对象模型而设计的 .无论模糊模型或是经验都是粗糙和不能令人满意的 .提出的方法可以通过旋转规则表来调整原始的规则 .仿真结果说明 ,这个方法是一种在模糊控制系统中有效调整规则的方法 .

摘要：研究参数服从马尔可夫切换及具有仿射不确定性的中立型时滞系统H∞ 状态反馈控制器设计问题 .通过将系统表示为等价的奇异系统 ,并利用Moon不等式放大向量积 ,基于线性矩阵不等式 ,得到了使系统存在无记忆H∞ 状态反馈控制器与时滞相关的新的充分条件 .

摘要：Simulating the traditional painting art by computer graphics is a challenging and attractive subject. Basing on the experience in the ink wash drawing, in this paper, we expound the artistic characters of ink wash painting and particularly analyze the characteristics of the materials used in the ink wash drawing and the relationships between them. A simulation model is presented and some typical visual effects of the ink wash painting are realized.

摘要：为解决工程实践中当混凝土结构内钢筋用量较大时钢筋间距过小的问题 ,提出了将纵向受力钢筋并筋布置的方法 .根据 3 1个并筋粘结锚固拉拔试件验的结果 ,进行了 1 7根钢筋混凝土并筋梁的受力性能试验 ,较详细地讨论了并筋梁粘结锚固的特点以及影响并筋粘结锚固的主要因素 ,并与一般梁进行了对比 .试验研究结果表明 ,采用并筋后钢筋和混凝土之间的粘结锚固性能有所下降 ,但粘结滑移特性与一般梁相近 ,通过适当延长锚固长度即可保证并筋梁的锚固强度和承载力 ,从而使并筋梁可在工程实践中应用 .给出了并筋锚固长度计算的建议公式 ,计算结果与试验结果符合良好 .在可靠度分析的基础上提出了并筋梁的设计建议 ,可供我国混凝土结构设计规范修订时参考 .

摘要：提出了一种基于微机械技术的微型电场传感器.该器件由振动部分和感应电极组成,通过静电梳齿结构驱动,并利用溅射到衬底的栅状金电极作为工作电极.基于SOI衬底加工的设计流程能够简化悬浮结构的制备.由于器件运动中受滑膜阻尼作用,因此可在大气下测试和封装,能够节约成本.阐述了器件的工作原理、结构仿真以及其键合/减薄工艺流程.该器件具有小尺寸和批量生产的优势,有望在安全预警和航天器升空环境探测等方面得以 应用.

摘要：On the basis of natural conditions of lack of rainfall on the Loess Plateau, this paper presents a method of design and construction in rainwater harvesting system for afforestation, which is suitable to the regions of 300 600?mm rainfall. The system consists of micro catchments of various forms and sizes that include planting areas, where trees are planted and trapped runoff, and contributing areas, where overland flow are produced by rainfall. The design is based on rainfall, runoff coefficients of contributing areas, evapotranspiration of trees and soil surface, water deficiency of soil, and environmental capacity of precipitation in the region, and so on. Runoff coefficient of contributing areas with YJG (organic silicon chemical treatment), compacted surface soil slope and natural slope micro catchments, are 0 8 0 89, 0 23 0 36, and 0 08 0 10 respectively. According to the Penman method, the soil water deficiency varies from 50?mm to 300?mm. In the region of 400?mm precipitation, the contributing area treated with YJG is 3 4?m 2 for timber forests, 8 10?m 2 for cash trees respectively; the contributing area treated with compacted soil surface is 6 8?m\+2 for timber forests, 10 12?m 2 for cash trees respectively; the contributing area of natural slope is 8 10?m 2 for timber forests, 12 15?m 2 for cash trees respectively. Transpiration from trees of micro catchment in YJG, compacted surface soil and natural slope treatment is by 47 65% 53 31%, 24 10% 36 93%, and 18 65% 29 55% of total rainfall (rainfall and harvested rainwater) respectively after the system was applied in the region. This system, which has been widely practising on the Loess Plateau, is now known as runoff forestry.

摘要：Eleven 1-(1H-1,2,4-triazole)-2-(2,4-diflurophenyl)-3-(N-methyl-N-substituted benzylamino)-2-propanols were designed and synthesized, on the basis of the crystal structure of P450 cytochrome 14α-sterol demethylase(CYP51) and the docking results of inhibitors to the active site of the enzyme. All title compounds were first by reported. Results of preliminary biological tests showed that most of title compounds exhibited activity against the seven common pathogenic fungi. Compound 11 showed best antifungal activity with broad antifungal spectrum and proved to be more active against Cryptococcus neoformans, Candida albicans, Microsporum lanosum and Trichophyton rubrum than ketoconazole. Compounds 3, 10 and 4 also had high activities.

摘要：考察了干燥路面上轮胎设计参数 ,如轮胎结构型式和胎面花纹等对轿车轮胎的静力学特性的影响。应用平台式轮胎静力学特性试验机 ,研究了低速往复条件下 ,3种不同胎面花纹轮胎在模拟干燥路面上的侧偏特性 ,即侧向力特性Fy-α关系曲线和回正力矩特性Mz-α关系曲线 ,重点分析了胎面花纹、轮胎负荷和轮胎气压等因素对轮胎侧偏特性的影响。结果表明 :轮胎的Fy-α关系曲线形状与胎面花纹形式、轮胎负荷和胎压等均无关 ,而Mz-α关系曲线变化趋势尽管与胎面花纹无关 ,却与轮胎负荷和气压有关 ;在相同试验条件下 ,顺向花纹轮胎具有更优异的附着性能和侧偏特性。