damping ratio

Using the FRF ( Frequency Response Function) fitting technique, this paper introduces the control system and the method of operation for the testing of "On Car" Automotive Shock Absorber damping ratio.

介绍一种采用频响函数拟合技术，实现对在用汽车减振器进行阻尼测试的控制系统和操作过程。

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An example of the first failure time analysis of a linear SDOF system excited by a quadratic forcing function shows the applicability of the method proposed and reveales the influence of the damping ratio of the system on its first failure.

二次力函数激励下线性SDOF系统的首次失效时间分析，说明了该方法的使用过程，并揭示了系统阻尼对首次失效的影响。

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the optimum parameters include the optimum frequency spacing, average damping ratio, and tuning frequency ratio.

最优参数包括最优频率间隔 、 最优平均阻尼比和最优调谐频率比.

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To sustain the stability of the 2-stage pneumatic servo valve, an air damper is incorporated into the valve which is intended to increase both the stiffness of pneumatic spring and the damping ratio.

为了保证双级气动伺服的稳定性，引入一气动阻尼以提高气动弹簧的刚度和阻尼比。

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third, a new structure of pid control reduces the damping ratio of the control system.

变结构的张力控制可以减小过程中的阻尼比的变化幅度,提高稳定性.

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Preliminary experimental studies on damping ratio of crumb rubber concrete

橡胶集料混凝土阻尼比的初步试验研究

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This method increase the damping ratio of the thrust vector control system and improve the system performance.

该方法提高了推力矢量电液位置伺服系统阻尼比，改善了系统的动态性能。

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The various tendencies of the basic frequency and the damping ratio of the pile-soil-frame structure system model has been analyzed with the top structure quality increase.

分析了随上部结构质量的增加，桩-土-框架结构体系模型的基本频率和阻尼比的变化趋势。

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Parameters influence analysis on isolation LNG storage tanks of different intensity, fundamental frequency, site, damping ratio, aspect ratio and spring stiffness. Suggested select the best isolator design parameters when designing LNG storage tank isolation combination construction. 6.

对隔震LNG储罐进行烈度、基频、场地、阻尼比、高径比以及复位弹簧刚度等参数影响分析，建议进行LNG储罐隔震设计时结合施工情况选取最佳隔震装置设计参数。

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the damping ratio of the structure is regarded as rayleigh damping ratio in this method.

该方法中的结构阻尼阵以瑞利阻尼形式给出.

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The factors such as degree of freedom, damping ratio, wind angle, the former bar of disturbance are studied on the VIV.

系统对比研究了结构自由度、阻尼比、风偏角、前杆干扰对杆件涡激振动影响。

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The natural frequency and damping ratio are the main parameters affecting frequency response errors. Transient response errors are related to the product of natural frequency and the rising edge time of the measured thrust.

固有频率和阻尼比是影响频率响应误差的主要参数，而瞬态响应误差则与固有频率和被测推力的上升沿时间的乘积有关。

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The results show: particle damper enables the damping ratio to reach up to492%;

研究结果表明：颗粒阻尼可以使得梁的阻尼比最大增加到492%；

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With analysis of professional software DASP, natural vibration frequency ( period)、 vibration mode and damping ratio of model structure with not sealing top and sealing top are obtained, and then analyze the the change rule of the dynamic characteristics after the two tests. 3.

利用专业软件DASP分析试验结果，得到模型结构在未封顶、封顶两种情况下的自振频率（周期）、振型和阻尼比，进而分析出两次试验后动力特性的变化规律。

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estimation and experimental research of critical speed and damping ratio of a rotor

转子特性参数估计和实验研究

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discusses the influences of the damping ratio, the vibration mode combinations and the motivational pattern for the bridge structure seismic response.

探讨了阻尼比、振型组合、激励方式对桥梁结构地震反应的影响。

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the mathematical model and the solution of the rotor-bearing problem of fess are researched with lagrange equation. the effect of damping on critical speed and damping ratio is studied with the model.

以数学模型为基础计算了阻尼器阻尼系数对临界转速和模态阻尼比的影响。

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Dynamic tests mainly test the characteristics such as natural frequency, vibration mode and damping ratio, and also test the influence to the frequency of bridge when model car on different positions and the response of vehicle-bridge coupling vibration system under positioning disturbing force.

动力测试主要测试模型桥的自振频率、振型、阻尼比等动力特性，并测试模型车静止于模型桥的不同位置对桥梁频率的影响以及定位激扰力作用下车桥耦合振动系统的响应。

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Theoretic analysis of dynamic response of free sites and dynamic triaxial test on dynamic modulus and damping ratio of soils are carried out, as a part of the project aided by nature science national fund, analysis of soil-foundation-structure dynamic interaction ( NO.50278033).

结合国家自然科学基金课题《地基-基础-上部结构相互作用体系动力特性研究》（NO.50278033），本文进行了自由场地动力反应理论分析和场地土动力特性试验研究。

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damping ratio is the main index representing the property of materials in reducing vibration.

材料的阻尼是衡量材料本身减振性能的主要指标.

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based on the dimensionless, stick-slip equation was simplified, deduced critical damping and critical damping ratio while the stick-slip vibration occurs, verified the rationality of the method that raise the rotation speed to cure stick-slip vibration.

通过无量纲化对粘滑振动方程进行简化，推导出了粘滑振动发生的临界条件及临界阻尼比，验证了通过提高转速来抑制粘滑振动的方法的合理性。

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Structure Damping Ratio to High-speed Train Function under Bridge Dynamic Response Influence

结构阻尼比对高速列车作用下桥梁动态响应的影响

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depending on the damping ratio adjusting, the low measurement range and the frequency response was realized.

采用调整阻尼比技术, 解决了传感器的低量程、高频响的技术难点.

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it is not consistent with damping mechanism and full-scale data of damping ratio of buildings.

目前结构设计阶段通常取阻尼比为常数,这不能真实反映建筑物的阻尼机理,与阻尼比的实测结果也有很大的差距.

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The negative-velocity feedback strategy and the optimization criterion of equivalent damping ratio are adopted.

采用负速度反馈控制策略及等效阻尼比优化准则.

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At last, suggestions of suitable effective damping ratio of that structure is put forward.

最后对本结构折算阻尼比设计取值给出了建议.

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On the other hand, close loop model fuzzy control is studied for a classical thrust vector electrohydraulic servo control system with low damping ratio and improves dynamic performance of the system.

此外，本文根据电液位置伺服系统阻尼比低的特点，采用闭环模型模糊控制，改善了系统的动态性能。

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According to hysteresis curve of each test step, the equivalent stiffness and the equivalent viscous damping ratio were calculated, and the calculation formula of the equivalent stiffness was put forward.

根据试验所得各个工况的滞回曲线，计算了铅芯橡胶阻尼器的等效刚度和等效粘滞阻尼比，并提出了其等效刚度的计算公式。

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this paper presents a concept of system damping ratio matrix and modal damping ratio matrix based on the critical damping matrix, extending the concept of damping ratio to the mdof system from sdof system.

本文将单自由度系统阻尼比的概念推广到多自由度系统，在临界阻尼矩阵的基础上提出了系统阻尼比矩阵和模态阻尼比矩阵的概念。

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estimation of critical speed and damping ratio of a rotor and prediction of the rotor response at critical speed

转子特性参数的预估和临界响应的预报

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