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relative damping ratio
相关语句
  阻尼比
     The effect of stiffness constant,viscosity damper coefficient and variable mass on the damped frequency and the relative damping ratio of the system were studied.
     研究了系统刚度、粘性阻尼系数尤其是变质量等参数对系统固有频率和阻尼比的影响。
短句来源
     Based on the kinematics analysis of the suspension mechanism,the formulas for analyzing the nonlinear characteristics of the force,rigidity and damping of the double wishbone suspension with torsion bar are accurately derived. According to partial frequency and relative damping ratio,a new design method for calculating the rigidity parameters of the torsion bar and damping parameters of the shock absorber is presented.
     在机构运动分析的基础上,导出了精确分析悬架受力、刚度和阻尼特性的基本公式,给出了按选定的偏频和相对阻尼比确定扭杆刚度和减震器阻尼参数的设计步骤.
短句来源
     The characteristic parameters of damped frequency,relative damping ratio,amplitude-time response,phase-time response,and dynamic response of the eccentric vibration seed-metering system were simulated with Excel.
     利用Excel对研制的偏心振动式排种系统的固有频率、阻尼比、幅值特性、相位特性及动态响应特性等特性参数进行了模拟分析。
短句来源
     The results showed that the damped frequency,relative damping ratio,amplitude ratio and phase lag between the output and the input of the system were gradually increasing along with the mass decreasing for the developed system in working. This certainly would result in the seed dropping speed increased gradually.
     结果表明:对于本系统而言,随着排种过程的进行,系统质量逐渐减少,系统的固有频率、阻尼比、输出与输入信号的相位差和输出信号幅值等参数均逐渐加大,这必然导致系统的排种速度逐渐加大。
短句来源
     Simulating analysis results showed that enlarged the ratio between the immutable mass and alterable mass of the system could reduce the difference extent of the parameters such as damped frequency,relative damping ratio and so on,so that the seed dropping speed uniformity could be improved.
     进一步分析结果表明:加大系统不可变质量与可变质量的比值,有助于降低系统固有频率和阻尼比等参数的变化幅度,进而提高排种均匀性。
短句来源
  相对阻尼比值
     Through different relative damping ratio and system sy ntony frequency,carried out correspondingly theoretical calculation,and obtained conclu-sions on influences of it to plane———telluric system vibration.
     通过给定不同的相对阻尼比值及系统谐振频率,相应进行了理论计算,得出了其对平板大地系统振动影响的结论。
短句来源
  相对阻尼系数
     In this article some characteristics of a simplified model of automobile vibration system with 1 and 2 degree of freedom are discussed theoritic-ally. It is based on authors experiments of the measurements of partial natural frequency and relative damping ratio and the ride quality of automob-ile.
     本文根据作者进行多次汽车偏频与相对阻尼系数试验,与汽车平顺性试验中遇到的问题,从理论上对汽车振动系统的简化模型,汽车一自由度与二自由度振动系统的某些特征进行了一些研究。
短句来源
     The paper may be of some value for the measurement of partial natural frequency and relative damping ratio and also for the research of automobile vibraton syst-me.
     本文对于进行汽车偏频与相对阻尼系数的测试与汽车振动系统的研究有一定的参考价值。
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In this article some characteristics of a simplified model of automobile vibration system with 1 and 2 degree of freedom are discussed theoritic-ally. It is based on authors experiments of the measurements of partial natural frequency and relative damping ratio and the ride quality of automob-ile. As a matter of the experiences in our experiments and spectral analysis, a method of partial natural frequency recognition from acceleration epectrums for the experiments in random road is presented. The paper...

In this article some characteristics of a simplified model of automobile vibration system with 1 and 2 degree of freedom are discussed theoritic-ally. It is based on authors experiments of the measurements of partial natural frequency and relative damping ratio and the ride quality of automob-ile. As a matter of the experiences in our experiments and spectral analysis, a method of partial natural frequency recognition from acceleration epectrums for the experiments in random road is presented. The paper may be of some value for the measurement of partial natural frequency and relative damping ratio and also for the research of automobile vibraton syst-me.

本文根据作者进行多次汽车偏频与相对阻尼系数试验,与汽车平顺性试验中遇到的问题,从理论上对汽车振动系统的简化模型,汽车一自由度与二自由度振动系统的某些特征进行了一些研究。总结了测试实验中一些经验和体会,并提出从随机道路试验中得到的加速度均方根自谱中识别汽车偏频的方法。本文对于进行汽车偏频与相对阻尼系数的测试与汽车振动系统的研究有一定的参考价值。

The paper has established quality -s pring -damper vibration mathematic al model for controllable source pla ne———telluric system,and submited param eters of each model and indexes of telluric caking elasticity and inertia.Through different relative damping ratio and system sy ntony frequency,carried out correspondingly theoretical calculation,and obtained conclu-sions on influences of it to plane———telluric system vibration.Some con clusions have referential values fo r productive prac-tices.

本文对可控震源平板—大地系统建立了质量—弹簧—阻尼器振动数学模型,并给出了各模型参数与大地粘弹性、惯性指标。通过给定不同的相对阻尼比值及系统谐振频率,相应进行了理论计算,得出了其对平板大地系统振动影响的结论。文中得出的一些结论,对实际生产具有参考意义。

The differential equations of the censorial moving and running relative to censorial of the eccentric vibration seed-metering system were set up with the dynamic analysis method.The transfer functions reflecting on the structure characteristic of the system were found out,and the amplitude-frequency distribution and phase-frequency distribution were analyzed based on Laplace's law.The effect of stiffness constant,viscosity damper coefficient and variable mass on the damped frequency and the relative damping...

The differential equations of the censorial moving and running relative to censorial of the eccentric vibration seed-metering system were set up with the dynamic analysis method.The transfer functions reflecting on the structure characteristic of the system were found out,and the amplitude-frequency distribution and phase-frequency distribution were analyzed based on Laplace's law.The effect of stiffness constant,viscosity damper coefficient and variable mass on the damped frequency and the relative damping ratio of the system were studied.The viewpoint of reducing the impact of variable mass on the working performance of the system to improve the uniformity of the seed dropping speed in the design course and adjust the seed dropping speed by adjusting rotation speed of vibrator in the using course.The results lay a foundation for the simulation test and the parameter optimization of the developed eccentric vibration seed-metering device.

利用动力学分析法建立了偏心振动式排种系统质心位移和绕质心转动角位移的微分方程。利用Laplace变换求出了反映系统结构特征的传递函数,分析了系统的幅频特性和相频特性。研究了系统刚度、粘性阻尼系数尤其是变质量等参数对系统固有频率和阻尼比的影响。提出了在系统设计过程中,应采取措施降低质量变化对系统性能的影响,提高排种均匀性;在使用过程中,通过改变振子转动角速度来调节排种速度的观点。研究成果对该排种器的模拟试验与参数优化奠定了理论基础。

 
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