无阻尼输入滤波器可能使变换器系统不稳定或者振荡。
Undamped input filter may cause converter system unstable or oscillation.
当阻尼介质参数趋于零时，本文结果与无阻尼解一致。
When the damped parameter tends to zero, the result in this paper is consistent with the non-damped case.
看来采用自由无阻尼正规模态可保证变形运动的线动量和角动量为零。
The use of the free undamped normal modes is seen to ensure that the linear and angular momenta of the distortional motion vanish.
本文从无阻尼系统开始，讨论了物理参数的变化引起结构动特性变化的灵敏度。
Beginning with the no damping system in this paper, the change rates of the structure's dynamic properties, caused by the small change of system parameters are discussed.
本文探讨了用附加已知质量的方法求解无阻尼质量弹簧系统的逆特征值问题的可能性。
The purpose of this paper is to find out an approach of inverse eigenvalue problems of undamped mass-spring system by using an attached lump of known mass.
本文首先给出了一类具有无穷多个周期解的无阻尼二阶线性偏微分方程所描述的系统。
This paper is devoted to study the existence of an infinitude of periodic solutions for a class of second order linear PDE systems without damping.
在小角位移的情形下，可近似得到相应的无阻尼线性系统的固有频率，它与观测结果吻合。
In the case of small angular displacement, the natural frequency of the corresponding damping-free linear system is obtained, which is consistent with the experimental observation.
并利用离散化的方法建立了串联盘式管道连续输送机传动系统在无阻尼情况下的动力学模型。
Besides, the dynamic model in driving system of the conveyer is established with through scattered method on no damping occasion.
在分析现有方法的基础之上，提出了一种基于线性无阻尼支承系统的刚体惯性参数识别方法。
Based on analysis of existing methodology, a methodology of inertia parameter identification based on the linear non-damping mounting system is put forward.
本文在工科物理实验中，用计算机动画来研究弹簧振子的无阻尼振动、阻尼振动及受迫振动。
It's exploratorily discussed that computer cartoons are used to study the non-evanescent vibration, evanescent vibration and forced vibration in students' physical experiments.
应用无因次理论，对简谐激励下两自由度无阻尼响应的性状分类及配伍规律作了一般的分析。
Applying the theory, the paper analyses generally the kinds of feafures and composures of forced responses of the dampingless two-DOF system excited by harmonic forces.
本文从无阻尼系统出发，理论上分析了转子系统振动方程的特征根，特征向量所具有的特点。
In this paper, the properties of eigenvalues and eigenvectors of rotor systems are discussed. The derivation shows that eigenvalues are imaginary in non-damping systems, and eigenspaces are complete.
经过大量的数值计算和分析，最终确定了无阻尼吸振器结构参数和位置参数的优化设计方法和步骤。
Finally, the optimization design of the undamped vibration absorber's location parameters and structure parameters are developed.
导出了在位形空间中，求解对应无阻尼问题有等导重特征值的弱阻尼陀螺特征值问题的直接摄动法。
The solution of eigenproblem of slightly damped gyro-systems by the direct perturbation method in configuration space;
针对小阻尼和无阻尼结构，提出了一种模态价值分析方法，用于在模态坐标下的动力学模型降阶问题。
A modal value analysis method is presented to obtain a reduced-order dynamic model with modal coordinates for structures with small damping or without damping.
对悬链面找形时发现，当黏性系数不大于0.7时，动力松弛法收敛，网格节点分布较无阻尼时均匀。
During form-finding of catenoid, when the viscosity coefficient was not more than0.7, the dynamic relaxation method taking damp into account had good convergence and the nodes distributed more even.
推导了弹性轴向行进索无阻尼线性受迫振动解，用数值方法求得有阻尼行进索受迫振动和自激振动响应。
The exact solution of linear, undamped forced vibration response is developed, and the damped forced vibration as well as the self-excited oscillation are obtained numerically.
机忻魅振动 （2学分）内容撮要：单自在度系统：自在振动、有阻尼受迫振动和无阻尼受迫振动；
Mechanical vibration (2 credits) Summary: The single degree of freedom systems: free vibration, forced vibration damped and forced vibration damping;
还提出了采用单自由度线性无阻尼自由振荡系统作为测定传感器谐波失真度的一个高纯度正弦波激振源。
It is also recommended in this paper that a linear nondamping free vibration system of a single freedom degree can provide a stimulant source of sine wave with high purti…
BERMAN修正方法基于无阻尼系统的模态正交条件，利用实验模态矩阵和特征值对有限元理论模型进行修正。
BERMAN updating arithmetic makes use of experimental model matrix and eigenvalue to modify the finite element academic model, based on the model orthographical condition of non-damping system.
六年来，我们用无阻尼水平摆地倾仪，在1.7秒—5秒的周期范围内，在一系列的强震发生前，分别记录到了一种明显的波动异常。
Since 1976, by using the non—damping horizontal pendulum tiltmeter at the range of 1.7"—5" period. we have recorded one wave anomaly signal before a series of strong earthquakes respectively.
本文采用交替迭代法分析索-桁结构体系，并导出了这种杂交结构无阻尼自由振动的简化方程，通过算例分析得出了一些对实际工程有益的结论。
In this paper, the alternate iteration method is used in static analysis of cable truss hybrid structural system, and the simplified non damping free vibration equations have been drawn.
首先，根据汽车动力传动系统的扭振当量原则与方法，分别建立了怠速工况与正常行驶工况下发动机、双质量飞轮以及传动系统的无阻尼多自由度扭振当量模型。
First of all, the two undamped multi-freedom torsional vibration models of DMF under idling and driving condition are built based on the principles of vehicle power train equivalent torsional model.
首先，根据汽车动力传动系统的扭振当量原则与方法，分别建立了怠速工况与正常行驶工况下发动机、双质量飞轮以及传动系统的无阻尼多自由度扭振当量模型。
First of all, the two undamped multi-freedom torsional vibration models of DMF under idling and driving condition are built based on the principles of vehicle power train equivalent torsional model.
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