- 更多网络例句与脉振相关的网络例句 [注:此内容来源于网络,仅供参考]
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The background component must be calculated by integration of the product of aerodynamic force covariance and influence function, instead of mode superimposition, while the resonant component only consider the contribution of the 1st mode.
前者不能按振型分解法求解,而应通过对气动力协方差与影响函数乘积积分的方法来计算;后者可只考虑一阶振型的贡献,两者应按平方和开方的原则组合得到脉动风致响应的峰值。
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In accordance with the situation that the damping was the non-classical damping,the structure was asymmetric,and random wind spectrum was irrational fraction wind spectrum,the equations obtained were decoupled with the complex mode theory.
建立运动方程,用第一振型将主体结构展开,针对非经典阻尼和非对称结构以及脉动风谱为非有理分式风谱的情况,运用复模态理论将所得方程进行解耦,获得了以第一振型表示的结构随机风振响应的解析解。
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In this paper, the stationary and non-stationary random wind-induced response, dynamic reliability and optimization under the dynamic reliability constraint of structures with foundation rotation and tall building with TMD or TLD is studied systematically. Three achievements are gained. 1. According to the situation that Davenport wind spectrum is irrational fraction, the equivalent wind spectrum is generated by linear filtered process.
本文对基础转动结构、带TMD或TLD结构的高层建筑和高耸结构的平稳与非平稳随机风振响应、动力可靠性分析以及基于动力可靠性约束的优化设计方法进行了系统的研究,取得了以下成果:1、针对Davenport脉动风谱为非有理分式风谱,通过线性滤波过程和三参数拟合,生成了与Davenport风谱等效的脉动风谱。
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The optimized projects of eliminating low frequency torque ripple in this subject are to make use of low speed and high torque permanent magnetic synchronous motors.
给出了低速大转矩无齿轮传动系统消除低频转矩脉振的优选方案是采用低速大转矩稀土永磁同步电动机的结论。
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In response to the relationship between cavitations and wake gradient, this paper puts forward 3 kinds of calculating model of propeller exciting force , then puts the actual exciting force into pattern formula, and then obtains a new formula to predict propeller-induced hull surface pressure fluctuations by analyzing and calculating some actual ships.
在深入研究国内外螺旋桨激振力计算方法以及综合分析影响螺旋桨激振力的各种要素的基础上,根据空泡数和伴流梯度的关系,本文提出三种螺旋桨脉动压力的计算模型,将反推得到的实际激振力分别代入模型公式,应用数学统计方法对几条实船进行计算分析,得到用于预报螺旋桨表面力的新公式。
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Because the 2nd harmonic of self inductance is larger than that of the mutual inductance, which is not agree with Park transform, so the saturated mathematical model under a, b, c phase coordinate system of pulsating magnetic field permanent magnet low speed synchronous motor is constructed.
利用有限元方法计算了脉振磁场永磁低速同步电动机参数变化规律,由于自感二次成分远大于互感二次成分,不满足Park变换条件,在a、b、c相坐标下建立电机饱和数学模型。
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A general matrix perturbation method for complex modes using singular value decomposition;2. The modal character,the error of the substituting by real modes and the best way to extract real modes from complex modes are discussed.
建立运动方程,用第一振型将主体结构展开,针对非经典阻尼和非对称结构以及脉动风谱为非有理分式风谱的情况,运用复模态理论将所得方程进行解耦,获得了以第一振型表示的结构随机风振响应的解析解。
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The purpose of opening the orifice was to sluice. The influence of fluctuating pressure upon the dam was another problem which was concerned by engineer. The paper analyzed Shuangkoudu masonry arch dam. The result indicated that the dam natural frequencies which consider the dam and the reservoir water interaction have great different from the preponderant frequencies of fluctuating pressure, the dam's first rank of vibration was far away from the high energy region of the fluctuating flow, so the sympathetic vibration would not take place.
坝身开设孔口主要目的是为了泄洪,泄洪时水流脉动压力对坝体结构动的影响是设计人员关心的另一课题,论文针对双口渡浆砌石拱坝进行了分析,研究结果表明:在考虑坝体一库水相互作用时坝体自振频率和水流脉动压力的优势频率相差较大,坝体的一阶振动远离脉动水流的高能量范围,二者不会发生共振。
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Periodic fluid pulsation in aeroplane hydraulic piping could induce fluid-construction vibration and lead to fatigue damage. It is impossible to find the error sensor's optimization location because of the pressure standing wave, and the pulsation attenuation effect is not perfect when adopting pulsation attenuation at single point. For this reason, a distributed active control method of fluid pulsation was presented. To avoid stationary point in all aviation states, several fluid pulsation actuators and error pressure sensors were placed along the piping. The second fluid pulsation produced by actuators can counteract the primary pulsation brought by aviation piston pump and make the mean pulsation of whole piping minimum when adopting adaptive feed- forward control and the filtered-X least mean square algorithm.
针对飞机液压能源管路系统中的周期性流体脉动诱发流固耦合振动,导致管路疲劳损伤的问题,针对管路中存在压力驻波特性,在采用单点消振时寻找误差传感器最佳布局位置困难而引起脉动抑制效果不理想的缺点,提出了一种分布式流体脉动主动控制方法,即沿管路不同位置布置多个主动消振阀和误差压力传感器,在任意飞行阶段,避开压力驻波点,以误差压力传感器的脉动测量值为控制目标,采用一种针对周期脉动主动控制的自适应前馈控制法和多通道自适应滤波-X LMS算法,调整控制器参数,使主动消振器产生的次级脉动与管路中的初始脉动相互抵消,达到整个管路中的平均流体脉动最小的效果。
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Furthermore,the influence of parameters such as the horizontal power spectrum density, basic wind pressure,span and weight of the roof,damping ratio,terrain categories and support restraints,which are usually critical to the wind vibration factor,are also discussed.
本文基于随机振动理论利用有限元程序ANSYS对大跨度实腹式钢梁在频域内进行了风振分析,讨论了高阶振型、脉动风速谱、基本风压、屋盖重量、地貌种别、阻尼比和支座约束等相关参数对屋盖结构风振响应和风振系数的影响。
- 更多网络解释与脉振相关的网络解释 [注:此内容来源于网络,仅供参考]
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clock pulse:脈波 脉波 (时钟)脉冲, 时钟信号
circuit 閘電路 閘電路 開關電路,邏輯電路 | clock pulse 脈波 脈波 (時鐘)脈衝,時鐘信號 | clock pulse oscillator 時脈振蕩器 時脈振蕩器 時鐘振蕩器
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clock pulse oscillator:時脈振蕩器 时脉振荡器 时钟振荡器
clock pulse 脈波 脈波 (時鐘)脈衝,時鐘信號 | clock pulse oscillator 時脈振蕩器 時脈振蕩器 時鐘振蕩器 | coding 撰寫 撰寫 編寫
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cyclotron resonance:回旋加速瞥振
cyclotron maser 回旋加速脉泽 | cyclotron resonance 回旋加速瞥振 | cylindrical cathode 圆柱形阴极
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fluted:有[带]槽的,有波纹[凹槽]的
flushing 清洗 | fluted 有[带]槽的,有波纹[凹槽]的 | flutter [动,名]颤振,振[脉,摆]动,振抖
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keyless ringing:无键振铃
keying wave generator 按键波发生器 | keyless ringing 无键振铃 | key-pulse 按键脉波
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Panting:脉动
panting 冲击 | panting 脉动 | panting 挠振现象
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velocity potential function:速位函数
"velocity of pulsation","脉振速度" | "velocity potential function","速位函数" | "velocity pressure","速度压力"
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arsenious:[化]含砒素的, 含砷的
legged 有腿的 | arsenious [化]含砒素的, 含砷的 | velocity of pulsation 脉振速度
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surmisable:可推测的
surging 冲击;波动;喘振;电涌;浪涌;脉动 | surmisable 可推测的 | surmise 推测;猜测
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ripple current motor:脉动电动机,脉动电流电动机
ringing dynamo 振铃电流发电机 | ripple current motor 脉动电动机; 脉动电流电动机 | rocket motor 火箭发动机