- 更多网络例句与多自由度的相关的网络例句 [注:此内容来源于网络,仅供参考]
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Based on the analysis for the dynamic characteristics of semi-rigid steel frames with simple or multiple degree-of-freedoms,effects of rotation stiffness of beam-to-column connections on the structure period,frequency,critical damping and mode of vibration are discussed.
通过对单自由度体系和多自由度体系半刚接钢框架的动力特征分析,初步探讨了梁柱连接转动刚度对结构自振周期、频率、临界阻尼以及振型等参数的影响。
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The standard function mode is that the system's excitation functions are sine wave, square wave and curve of free little damped vibration, the vibration's frequency are about 2Hz. The vibration mode must be in accord with the crane's work status in the vision computer.
调查表明,集装箱桥机驾驶员座椅工作中更多的是小车运行方向的前后振动,所以我们的多自由度座椅振动平台采用X方向的单自由度激励,即可实现座椅振动的大部分体感功能,同时开发成本也大大降低。
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Keywords : compound planetary train;component relative rotational speed diagram;transmission scheme;design method
通过建立多自由度行星变速机构的构件相对转速图,提出了一种多自由度复合行星传动方案设计理论和方法。
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Furthermore, the advantages of the genetic algorithm and the above single layer neural network are combined to yield a new identification technique. The network topology is employed to replace the procedure for solving the governing equation when GA is used to identify the system parameters of both the SDOF system and the MDOF system with or without noise contamination. The comparison is made between the predicted acceleration and the measured one for each case.
另外,结合类神经网路与基因演算法於结构动力参数识别,首先应用前述之单层类神经网路架构做为系统动力模式,再藉由基因演算法搜索符合该系统之权重值,然后将权重值代入网路架构以取代解微分方程式求得系统反应,最后再与量测反应做比较;同时亦利用该方法应用於进行识别含杂讯之输出入资料的系统权重值,以验证该方法应用於单自由度线性系统及多自由度线性系统识别之可行性。
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Based on this mathematic model, the computer simulation model of 3-DOF motions of mooring systems was built up.
在此数学模型的基础上,建立了系泊系统的多自由度的计算机仿真模型。
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Around the topic, the weak points of the traditional platform is analyzed first, such as complex arithmetic, long calculating time, high needs of hardware and so on. A real time control method based on virtual simulation is suggested to separate the complex positive/negative calculation of space kinematic and real time motion control. And a"3-2-1"type 6DOF platform is designed with the reference of the MAST (Multi-Axis Shaking Table) of MTS. The kinematic and dynamic calculation of the platform is finished. According to the calculating result, the control system of the"3-2-1"type 6DOF platform including 6 linear servo electric cylinders is designed and constructed. And the professional software Pro/E is used to do the 3D model and 6DOF motion simulation of the platform. The motion curves of the pistons of the 6 cylinders are exported with the simulation. At last the control software is programmed with Microsoft Visual Basic 6.0 and realizes the functions with the commands of GE series motion controllers. When loading the motion curves exported with the simulation, every cylinder can follow the curve very well and the platform realizes the hoped 6DOF motion.
围绕选题,本论文首先分析了传统的运动平台控制方法所存在的算法复杂、解算耗时长、硬件需求高的缺点,提出了一种基于虚拟仿真的实时控制方法,该方法将复杂的空间运动学正、反解与实时运动控制相分离;之后,参考MTS公司的MAST多轴振动平台,设计了新型的"3-2-1"型六自由度平台,并进行了运动学及动力学计算,根据相关计算结果,设计与搭建了包括驱动6个直线伺服电动缸在内的"3-2-1"型六自由度平台控制系统;接着,使用Pro/E对"3-2-1"型六自由度平台进行了三维建模和六自由度运动学仿真,并由仿真直接获得了6个直线伺服电动缸的活塞杆的相应运动曲线;最后使用Microsoft Visual Basic 6.0编写了控制软件界面,通过调用GE系列运动控制卡的各种命令函数实现了控制系统的相关功能,而当加载仿真得到的各缸运动曲线后,每缸均能很好地跟踪输入曲线,使平台实现了期望的多自由度运动。
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The critical curves of linear shimmy systems are determined by optimizing the complex eigenvalues. This method can be used to analyse stability of linear shimmy systems with the arbitrary degrees of freedom and to extricate designers from the tedious algebraical derivation in the early shimmy stability analyses.
并使用&复特征值优化分析方法&确定线性摆振系统的各种临界参数曲线,这种方法可以分析任意多自由度的线性摆振系统的稳定性,免去了以往摆振稳定性分析中冗长的代数推导。
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This article introduces types and characteristics of vehicle's transmission,and analysed its current development,with detailed discussion on the research methods of epicyclical gear transmission at home and abroad,including the design methods of its transmission diagram which has two or three degree-of-freedom,the process of shifting gears which has multiple degree-of-freedom,the denotation method of joint element on the chart of equivalent lever,and the equivalent lever method in which the dynamic and kine...
介绍了车辆变速器的种类、特点与发展概况,对变速器中的机械传动部分,特别是行星齿轮传动的研究状况介绍的较为详细。对国内外关于2自由度、3自由度行星式变速器传动简图的设计方法,多自由度变速器的换档过程,利用等效杠杆法研究行星齿轮传动,等效杠杆图中接合元件的表示方法,利用等效杠杆的运动分析、力分析和运动分析方程,建立行星变速器相应分析的方程的基本情况作了介绍,并分析了各种研究方法的适应范围与优缺点。
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Being the large size of extra caissons and effect of uncertainties in construction, the sink motion of extra caissons in soil can be considered as rigid motion of multiple degree of freedom in three-dimensional system.
沉井结构的刚度及尺寸较大,并且受不确定性因素的影响,其在土介质中的下沉运动可以认为是刚体运动,因而沉井的实际下沉运动是空体系下的多自由度的刚体运动。
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Designing space mechanism run into question at first is that correct to confirm space degree of freedom of organization, but calculating many degrees of freedom, seal more ring, harmony wave gear wheel organization, space degree of freedom of organization of mixing with traditional degree of freedom must be very tedious; Calculating general form seal ring low packs of space degree of freedom of organization can be limited greatly too.
设计空间机构时,首先遇到的问题是要正确确定空间机构的自由度,然而,用传统空间机构自由度公式去计算多自由度、多封闭环、谐波齿轮机构、混合型空间机构的自由度时,必须进行变换;计算一般单封闭环低副空间机构自由度时,也会受到很大限制。
- 更多网络解释与多自由度的相关的网络解释 [注:此内容来源于网络,仅供参考]
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hierarchical classification:系统分组
剖分成处理间自由度与处理内自由度两部分来实现的.在安排多因素试验方案时,将A因素分为a个水平,在A因素每个水平Ai下又将B因素分成b个水平,再在B因素每个水平Bij下将C因素分c个水平......,这样得到各因素水平组合的方式称为系统分组(hierarchical classification)或称多层分组,套设计,
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coherent:相干
态矢量在这两个世界上的投影是彼此"相干"(coherent)的. 而多维空间中,任取两条直线,其互相垂直的可能性就比2维中大的多. 因为它比2维有多得多的维数,即自由度. 比如1000亿维空间,任画两条直线或平面,它们就几乎必定是基本垂直了.
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freedom:自由度
计量为什么非常关心自由度(freedom)这个概念?自由度的经济或者直观含义是什么?为什么在估计参数时自由度越多越好?
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motional impedance:动生阻抗 从加载阻抗中减去受挡阻抗的复数差
mechanical stiffness 力劲 容性力抗乘以角频率 | motional impedance 动生阻抗 从加载阻抗中减去受挡阻抗的复数差 | Natural frequency 固有频率 系统自由振动时的频率,在多自由度系统中,固有频率是简正振动的频...
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multivalve:多管的多阀的
multivalve 多管的 | multivalve 多管的多阀的 | multivariant 多自由度的
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No Way Back:无路可退
欧洲中部时间1月28日上午10:45(北京时间1月28日下午17:45),美国全国广播公司财经频道(CNBC)举办了一场名为"无路可退"(No Way Back)的辩论. 如何帮助世界经济走出低谷,谁该受到更大的监管,谁该被赋予更多的自由度,
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multivariant:多自由度的
multivalve 多管的多阀的 | multivariant 多自由度的 | multivibrator 多谐振荡器
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laissez faire:放任
政府的"积极不干预"除了在"自由放任"(laissez faire)经济上成为政策,连文化政策也全无不同,居民的自由度远较其它华人社会为大. 这种开放态度,造成港人的文化目光和胸襟广阔,令社会呈现了多姿多采的丰富面貌(4),但同时也令香港人目空一切,
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Parallel Universes:平行宇宙
多世界理 论有时也称为"平行宇宙"(Parallel Universes)理论,就是因为这个道理. 非常妙的解释是:这牵涉到我们所描述"世界"的维数,或者说自由度的数量. 在上面的例子中,我们举了A和B分别生活在x轴和y轴上的例子. 因为x轴和y轴互相垂直,
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Accelerometers:加速度计
ADIS16355是一组多轴动作传感器,以具成本效益的方式将陀螺仪(gyroscope)和振动加速度计(accelerometers)加以结合,以便测量全部6组可能的机械性自由度(6DOF)--在X、Y与Z轴上的线性移动以及绕着X、Y与Z轴的旋转动作.