得到了阻尼时间与塌缩时间的解析公式。
The analytic formulae of the damping and collapse time can be obtained.
变更膜盒阻尼时间常数。
该方法能够快速、准确地测量指针式仪表阻尼时间。
The new method can measure damping period of dial instrument rapidly and accurately.
放大器部件阻尼时间常数在0。2 ~ 64秒范围可调。
导出解析形式的稳定性判据和章动阻尼时间常数,可用以估计卫星的稳定度。
The stability criteria and the decay time constant of the nutation damping are obtained in an analytical form, by which the degree of the attitude stability can bd evaluated.
试验表明该主动阻尼控制方案可在大范围内对转子进行阻尼,大大减少了阻尼时间。
Experiments are done on the air-bearing device for hollow ESG rotor, which prove that the active damping control system can successfully damp the rotor in a wide range and reduce much damping time.
分析了常用仪表阻尼时间测量方法的弊端,研究了一种基于图像识别的自动阻尼时间测量方法。
The paper analyzes the disadvantage of general damping period measurement method of dial instrument, researches a automatic damping period measure method, which is based on image recognition.
通过仿真分析,比较2套阻尼系统的误差结果,可以看出双惯导外水平阻尼能够显著降低外速度误差的影响,减少阻尼时间,抑制经度误差。
In this paper, the simulation results show that the level damp of DINS can reduce the influence of the external velocity error, decrease damping time, and restrain the error of longitude effectively.
有时防震器闲置要比抵抗波力来得更好,并且建筑物的共振可以随着时间的推移而改变,使无源阻尼器效果低。
Sometimes shock absorbers resist waves that it would be better to relax with, and the resonance of a building can change over time, making passive dampers less effective.
如果总时间增加了,那么就不那么需要对采集的时域数据施加大的阻尼窗了。
If the total time is increased, then there is less need for a significant amount of damping window to be applied to the collected time data.
在交流电路中常采用空气阻尼型时间继电器,它是利用空气通过小孔节流的原理来获得延时动作的。
Often in ac circuit by air damping model time relay, it is to use the principle of air through orifices throttling to obtain delay action.
早期在交流电路中常采用空气阻尼型时间继电器,它是利用空气通过小孔节流的原理来获得延时动作的。
Early in the circuit often USES air damping model time relay, it is to use the principle of air through orifices throttling to obtain delay action.
抗阻尼性能强:金属钛受到机械振动、电振动后,与钢、铜金属相比,其自身振动衰减时间最长。
Strong antidumping property: When titanium is affected by mechanical vibration or electric oscillation, its vibration damping time lasts the longest time, compared to that of steel and copper.
按照阻尼比和模型的延迟时间选择不同的闭环极点,并且为计算提供了简单的公式。
Different closed loop poles are selected according to the damping ratio and dead time, and simple formulas are provided for the calculation.
结果表明,当反应时间较大时,反应速度是以指数衰减或小阻尼振动的方式趋向稳态。
The result indicates that the enzyme reaction velocity tends towards steady state with the form of index attenuation or small damped vibration when reaction time is longer.
运用当地时间步长、隐式残值光顺、焓阻尼等措施加速计算收敛。
Local time step, implicit residue averaging, enthalpy damping are used to accelerate the convergence.
本文根据原型振动实测的位移记录,应用时间域识别法,求得了结构的前几阶模态的固有频率和阻尼比。
Some modal natural frequencies and damping coefficients of a structure are derived by means of in-sita testing displacement records and the time domain identification technique.
采用了当地时间步长、压强阻尼及隐式残值平均方法来加速收敛。
The technique of local time stepping, pressure damping and implicit residual smoothing are used to increase the convergence rate.
同时,分析了桩身驰豫时间、桩侧土的等效粘滞阻尼系数、桩底土的单位刚度等因素对应力波的影响。
The study also goes to the influence, upon stress waves, of the piles relaxation time, the equivalent viscous damping coefficient of soil around the pile and the unit rigidity of soil below the pile.
针对阻尼比、间隔距离、时间迟滞,计算了不同的固有频率下的碰撞力峰值,绘制出碰撞力响应谱。
The pounding force spectra after given damping ratio, interval, and time delay, were plotted according to the natural frequencies.
文中还画出了荷载与阻尼介质对圆板运动时间和板中心点残余挠度的影响曲线。
The influence curve which shows the effect of the load and the damping medium on movement time and residual deflection of central point for circular plates was traced in this paper.
通过求解动力学方程,给出空气压膜阻尼效应对于光开关响应时间的影响。
According to solving the dynamic equation, the effect of the air squeeze film damping on the switching time is given.
在计算域的边界布置阻尼层,保证了在一个有限的时间域和空间域内得到稳定的计算结果。
A damping layer was arranged at the boundaries of the computational domain to ensure that steady calculation results can be obtained within a finite time and space domain.
在该公式中,桩端土的静阻力可以直接从桩顶的加速度信号中获得的桩顶回弹和冲击力持续时间计算得到,并且计算结果和土阻尼无关。
In this method, the static resistance at pile toe can be calculated directly with the rebound at pile top and impulse duration from the acceleration signal at pile top.
相据在规则横浪中的船模试验结果,研究了参激横摇运动的稳定性、时间经历和幅频响应,还讨论了横摇阻尼、初稳心高度和波浪等因素对参激横摇运动的影响。
According to the results of model tests in a regular beam wave, the motion stability, the time history of the motion and the amplitude-frequency response of the parametric roll are investigated.
阻尼使非线性包装系统位移峰值和加速度峰值明显降低,但对脉冲持续时间几乎无影响。
The damping can obviously decrease the peaks of displacement and acceleration of nonlinearcushioning system, but has on effect on the pulse duration.
磁流体减振器作为一种阻尼力可调减振器,具有反应时间迅速,能适用于振动系统实时控制等特点。
As a damping force controllable absorber, magneto-rheological (MR) absorber is rapid-response and suitable for vibration control system.
结果表明:在不考虑激光线宽及消相碰撞时,探测场的吸收随时间在零吸收附近作类似于阻尼减幅振荡,系统可实现无反转放大;
It is shown that the time-dependent probe absorption is oscillatorily damped to its steady state and transient amplification without inversion can be realized;
通过量纲分析的方法给出了岩体结构振动的阻尼表达式,指出可以通过岩体的振动实验确定阻尼比,并进而给出特征时间。
The damping expression of structural vibration for rock mass is given by dimensional analysis, and the damping ratio can be obtained through vibration test.
本文根据脉冲响应时间序列的峰值及其对应的时间序列计算频率、阻尼、幅值和相位。
The time domain peak value method is presented and identification of parameters from the time series with single frequency is carried out.
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