查询词典 parameter curve

Considering the inconvenience of regulation and difficulty of parameter tunning as AC servo system in practical situation, three ways of intelligent control approach to realize auto-tuning and autorecognization of AC servo system, are proposed, which is a robust controller based on two-degrees-offreedom with no tuning to controller, a auto-tuning controller based on fuzzy reasoning with no inertia recognization but tuning parameter of controller, a strategy recognizing inertia of servo system and tuning parameter or structure of controller automatically. In the same time, these control strategies are analyzed from the theory and reliability. The comparative analysis of three measures on strong and weak points is made by simulation and experiment results.

针对交流伺服系统在实际应用中存在的系统调试不便、参数调整困难等问题，提出了实现交流伺服系统自调整和自识别等智能化控制策略的三条途径：一是具有控制器无调整特点的二自由度鲁棒性控制器；二是惯量无识别但需自动调整控制器参数的模糊推理自调整控制器，三是自动识别伺服系统转动惯量并自动调整控制器参数和结构的方案，从理论分析和可实现性两方面对这些控制方案进行了论述，并通过仿真和实验研究，对比分析了各种方案的优缺点，得到了一些有益的结果。

First, this paper presents three girders model with double cable planes which main girder and side girder is connected by rigid arms, analyzes the dynamic characteristic of Yonghe cable-stayed bridge and obtains its natural vibration modes (i.e., frequency, damping values and the mode shapes ) by ANLSIS structural analysis program and uses these parameters as dynamic dactylogram of the intact case of cable-stayed bridge. Using the passage of random as the ambient vibration ,the dynamic properties of Yonghe Bridge is measured and the modal parameter of its 15 years after is identified and used as dynamic dactylogram of the damaged case. By the finite element analysis and locale vibration test, damaged and undamaged modal parameter is analyzed and curvature mode shape, which is sensitive to damage state, is introduced as possible candidate for identifying and locating damage in the cable-stayed bridge. Selecting the branch of part measured point from modal parameter, this paper deduces the damaged index which can detect the possible damaged location of the cable-stayed bridge deck and identifies the damaged region and degree for Yonghe Bridge. For the purpose of structural condition monitoring in in-situ , from another viewpoint, this paper introduces the method called the best optimization vector to detect damaged location and degree. The accuracy and reliability of the method presented in this paper are demonstrated by static analysis and test and the healthy state of Yonghe Bridge can be evaluated.

建立了双索面通过刚臂与主梁及边梁相连的三梁式力学模型，采用ANSYS结构分析程序对永和斜拉桥进行动力分析，对其振动模态参数进行识别，以此作为斜拉桥完好状态下的动力&指纹&；采用自由交通流作为环境振源，对永和斜拉桥动力特性进行测试，识别出永和斜拉桥使用15年后的模态参数，确立了破损状态下的动力&指纹&；利用有限元分析、现场振动测试，对破损前后的模态参数进行分析，提取对破损状况较敏感的模态曲率作为斜拉桥破损诊断的参数；并从模态参数中选取部分点的分量，导出可以指示斜拉桥桥面大概损伤位置的Index损伤指标，识别出斜拉桥发生破损的区段及破损程度；考虑大型斜拉桥在线监测要求识别破损的具体位置，从另一角度提出采用最优矢量法具体确定破损发生的位置及程度；为验证本文研究成果，对永和斜拉桥进行静力分析及静力测试，对其健康状况提出可靠的评价。

The inadequacy that exists in this domain is, the method that the three-dimensional parameter of clipper-built flow path changes the aspect that build a model exists to use a sex indeed mostly not strong, perhaps cannot be opposite model antrum curved surface undertakes parameter changes three-dimensional parameter of pilot defect; to change flow path model to not was aimed at its function feature to undertake differentiating, go against optimize a design further.

该领域中存在的不足是，流线型流道的三维参数化建模方面的方法大多存在着实用性不强，或者无法对型腔曲面进行参数化控制的缺点；三维参数化流道模型没有针对其功能特征进行划分，不利于进一步的优化设计。

Based on the fold beelines model, an apropriate parameter for structured soils, termed structured parameter was presented. This parameter could describe fraction of plastic work stored under compression, and the difference of mechanical behavior between overconsolidated soils and structured soils.

基于这个双段线的压缩模型，提出了一个土的结构性参数，这个土性参数可以反映结构性土压缩过程中塑性自由能和耗散能的比例关系，并且可以表述结构性土和超固结土力学性状的不同。

The paper takes Breakingfruit Chinkapin fibre and other wood fiber compound manufacturing MDF's Processing-parameter for research object. Use the diagonal intersection trial law designing the trial scheme. The focal point is studied the major Processing-parameter of Breakingfruit Chinkapin with other woods to manufacture MDF. And internal bond strength, modulus of rupture, modulus of elasticity, formaldehyde emission content, thickness expansion rate of water absorbing and density of MDF are analysed. From Variance, Range and other methods seek the better Processing-parameter.

本文以黎蒴栲材热磨纤维与其他树种热磨纤维复合制造MDF工艺为研究对象，采用正交试验法设计试验方案，并根据国家标准规定的测试方法对压制成的MDF的内结合强度、静曲强度、静曲弹性模量、甲醛释放量、吸水厚度膨胀率等多项性能进行分析，利用方差、极差等分析手段寻找合理的制造工艺参数。

The nephelauxetic parameter, bonding parameter and covalency parameter are calculated according to the location of the PA peaks in NdF〓, Nd〓.H〓O and Nd〓〓.

根据NdF〓、Nd〓。H〓O和Nd〓〓的谱峰位置，计算了它们的电子云重排参数β、键合参数b〓和Sinha共价参数δ。

A nonlinear adaptive speed controller based on adaptive backstepping approach for permanent magnet synchronous motors with nonlinear coupling and parameter uncertainties is presented. With the preposed controller, the parameter uncertainties are compensated and high performance speed controller for permanent magnet synchronous motors is shown to be globally asymptotically stable. The scheme is robust to the parameter uncertainties and load torque disturbance.

针对永磁同步电动机系统的非线性耦合特性以及参数的不确定性，采用自适应反步控制实现永磁同步电动机的非线性控制，在补偿参数不确定性影响，提高系统的抗干扰能力的同时，实现了永磁同步电动机的高性能全局渐近稳定速度跟踪控制。

Based on the characteristics of parameterized design and key technologies of knowledge based engineering, and specially according to the characteristics of the construction, figure, assembly-parameter of bicycle frame design, the article has achieved repeated using of experiential parameter and knowledge by adopting methods such as automatic reading experiential datasheet, computing parameter by making use of program, manual data-input or modifying and so on. Based on analyzing the characteristics of Rear End design and the associated characteristics with Chain Stay and Seat Stay, different design methods are analyzed in detail, and rapidly assembling of Rear End, Chain Stay and Seat Stay is achieved by using the method of combining top-down-assembly with down-top-assembly method. Based on analyzing special technologies and UDF characteristics, the repeated using of different sectional shapes by using UDF technology on the tube section design is also achieved, and this will greatly shorten the time spent on fixing the dimensions and orientations on sketches.

在探讨了参数化设计技术特点和知识工程关键技术的基础上，针对自行车车架设计中的结构、形状、装配参数特点，分别采用了读入经验数据表、参数程序求解、手工录入或修改方法实现车架设计经验参数和知识的重复利用；在分析自行车后叉片设计特点及与平、立叉的关联特性的基础上，对不同的设计方案进行了详细分析，并采用自顶向下和自底向上相结合的方法，实现了后叉片的快速装配定位与平、立叉设计相关联；在分析了特征技术和UDF特点的基础上，将UDF用于管件截面的设计上，使各种截面形状能不断重复利用，大大节省了约束草图尺寸和位置的时间。

These curves contain a shape parameter which can adjust the softness of curve and have the same continuity with the original B-spline. In succession, using the positive conditions of Bernstein polynomial to find a range in which the shape parameter takes its value so as to make the corresponding interpolating curves monotonicity-preserving and C~2 continuous.

利用奇异混合的思想构造出一类带有形状参数的多项式样条曲线，即均匀α-B样条曲线，在无需反求方程组、迭代过程和最值求解的情况下就能轻松做到插值给定的点列；它含有形状参数α，这就增加了曲线的柔性，同时又和原B样条曲线具有相同的参数连续性。

This paper deriving the theory workinflection point in the static stage characteristics curve of small measurement range lineardimension measurement .by the way of high pressure and back pressure pneumaticmeasure and designed the parameter of the mainly and measure spray head, which are thekey component in the spray head-baffle pneumatic sensor .The different groups for themain-spray head and the measure spray head ,will effect the dynamic and static stagecharacteristic parameter .The author have done contrast experiment and optimizationdesign to test and verify the theory derivation whereby made the rang of show valve ofpneumatic measure system measure range up to 40 μ m, the sensitivity up to 100mv/μ m,resolution up to 0.05 μm, the uncertainly of measure is less than 0.02 μm, satisfaction ofrequirement of groups the carboy hatch thickness size precise measure of soft shims.

对高压背压式气动测量用于小量程线性尺寸测量的静态特性曲线的理论工作拐点进行了推导，对气动测量系统中的喷嘴-挡板型气动传感器中的关键部件——主喷嘴和测量喷嘴的参数进行了理论设计，对主喷嘴和测量喷嘴的不同组合，将影响测量系统静、动态特性指标的喷嘴参数进行了对比实验和优化设计，并通过实验验证了理论推导，从而使气动测量系统量程的示值范围达到40μm，灵敏度达到100mv／μm，分辨率达到0.05μm，测量不确定度小于0.2μm，满足了压缩机缸盖软体垫片厚度尺寸精密测量分组的要求。

Only the Kuomintang warlords who have brought the areas under their own rule to the brink of bankruptcy have the utter shamelessness to spread the rumour, day in day out, that the Red areas are in a state of total collapse.

只有最无耻的国民党军阀，才会在他们自己统治的区域内弄到差不多民穷财尽的地步，还会天天造谣，说红色区域如何破坏不堪。

Hellions would probably be the closest to melee units, but still, we can't cons账号er them that because of the flamethrower.

恶火战车或许是最接近于近战单位这种概念地单位了，不过因为它是用地火焰喷射器，所以它们也不能算是真正地近战单位。