衰减率

利用Lyapunov方法给出了系统以衰减率α全局渐近稳定的充分条件。

Sufficient conditions with respect to decay rate α are given in the sense of Lyapunov asymptotic stability .

提出了使得该系统达到指数稳定的动态输出反馈控制器的设计方法。利用遗传算法获得了NCS的事件衰减率的局部极大值。

The design of dynamic output feedback controller to make the system exponential stability is given and the partly largest value of the decay rate using genetic algorithm is obtained .

该拓扑结构利用耦合电感滤波网络取代传统的LC电路，以得到高频段更大的衰减率，从而有效抑制输出纹波。

Traditional LC circuit has been replaced by coupled-inductance filter to gain greater attenuation rate in the high frequency .

推算NOAAAVHRR1、2通道衰减率的一种方法

A method for determining the sensor degradation rates of NOAA AVHRR channels 1 and 2

2C时经过20次循环后，衰减率小于1.5%。

After 20 cycles at 2 C , the capacity retention was less than 1.5 % .

此外，纳米TiN改性的Ti（C，N）基金属陶瓷经过热震后，即便抗弯强度急剧降低，其硬度衰减率仍不到1%，表明材料的硬度受热震影响很小。

Moreover , the decline rate of hardness of nano modified Ti ( C , N ) based cermets after thermal shock is less than 1 % even though the strength decreases sharply .

注入Kicker用作为激励束流，以便监测衰减率和研究β振荡。

Injection kickers are used to excite beam for monitoring damping rate and β oscillation .

染色线观测显示H值增大使扰动失稳距离增加，扰动衰减率与波数的关系同空间模式稳定性分析的理论结果定性一致。

Traces of dyes indicate that the stable length increases with an augment of H , and the relations between spatial attenuation rates of disturbance and wavenumbers are correspondent with theoretical results by the analysis of spatial mode .

本文按照文献[1]所提供的理论模型，计算了各类光纤（塑料、石英、玻璃光纤）的弯曲半径R，光纤半径a对光纤传感器的光衰减率γ或光相对传输率T的影响。

According to the theoretical model given in reference 1 , the radii of curvature R , and effect of the radii of various optical fibers on the optical attenuation ratio were calculated and the relative transmission T were deduced .

本文采用葛氏倒扭摆（JN&1型真空扭摆仪）测试了Fe-Al系合金的阻尼性能（用对数衰减率表示）。

The inverted torsion pendulum technique ( JN-1 vacuum internal friction technique ) was used to test the damping capacities of Fe-Al alloys .

在7C放电情况下，经450循环后，容量衰减率小于20%。

The capacity decreasing rate via the 450 cycles at 7 C is less than 20 % .

通过电化学测试发现，修饰石墨首次充放电效率达到94.9%，比容量为306.1mAh／g，并且经过100次循环后，比容量衰减率仅为8.2%。

Electrochemical tests showed that the first charge / discharge efficiency of improved graphite achieved 94 . 9 % , the specific capacity was 306 . 1mAh / g , and decreasing rate of specific capacity was just 8 . 3 % after 100 cycles .

CBL衰减率与水泥密度以及通过该水泥的纵波与横波的速度紧密相关。

The decay rate of CBL is closely connected with cement weight and the velocity of longitudinal wave and transverse wave through the cement sheath .

480℃样品的第一循环的放电容量为218mAh／g，在40个循环的充放电中放电容量衰减率为27%。

The discharge capacity of 480C sample is 218mAh / g at the first cycle and the declined rate of discharge capacity is 27 % in 40 cycles .

注射抗生素后第14天RNS衰减率和AchRab滴度，C组明显高于A组（P<0.05及P<0.01）。

Fourteen days after the antibiotics treatment , the decremental rate of RNS and levels of serum AchRab in the C group were higher than in the A group ( P < 0.05 and P < 0.01 ) .

报道了一种分析长周期光纤光栅（LPFG）透射谱谐振波长和衰减率随弯曲曲率变化的方法。

A method to analyze the resonant wavelength and damping decrement of the transmission spectrum of long period fiber grating ( LPFG ) with bending curvature was reported .

结果表明，主震前后区域尾波振幅衰减率β和QC-1值发生了明显的变化。主震前，区域平均β值为00122s-1，相应的QC值为111；

The results show obvious variation in the β and Q C - 1 values of regional coda wave amplitude attenuation rates before and after the main earthquake .

对于TE波模，隧道的介电常数和磁导率的变化对电磁波衰减率变化的影响不大，对于TM波模，隧道的介电常数或磁导率越大，电磁波衰减率越大。

For TE modes , the changes of dielectric constant and magnetic permeability of tunnel have little effect on that of the attenuation rate ; for TM modes , the dielectric constant or magnetic permeability of tunnel is bigger , the attenuation rate is higher .

在1100℃×0.5h退火，合金的阻尼性能最高，对数衰减率达0.16，但在该温度下随保温时间的延长，阻尼性能急剧下降。

The logarithmic decrement is the highest after the alloy is annealed at 1100 ℃× 0.5h , but as time increases at 1100 ℃, this capacity drops quickly , especially during 4h .

研究了在可膨胀石墨表面非电沉积金属，对镀金属膨胀石墨进行了FT-IR及热重分析，利用烟火药爆炸对其进行了膨化及分散试验，测试了其对8mm波的衰减率。

Electroless metal plating was performed on the surface of expandable graphite , FT-IR and TG-DTG analysis to metal-coated expandable graphite was studied in this paper . Expansion , disperse and attenuation to 8mm wave were carried out by pyrotechnic explosion .

对空圆形隧道及隧道中含有纵向导体的电磁波传输特性进行分析，给出了相应的衰减率计算公式及波模方程，并且采用Muller法对其进行求解。

Analysing the propagation of EM wave for the circular tunnels and tunnels with a contained axial conductor , the formulas of attenuation and the mode equations are given and they are solved by the Muller 's way .

本文的模糊耦合同步方法通过LMI方法可以迅速求取可行解，同步条件更加清晰明确、约束条件少，并可以方便地得到不同衰减率α下全局渐近稳定的充分条件。

The feasible solution of the fuzzy coupled synchronization proposed in this paper can be quickly resolved by LMI method with clearer synchronization conditions and fewer constraint conditions . The sufficient conditions of global asymptotic stability with alterable decay rate α could also be obtained conveniently .

实验结果表明，磁铁在距样品5mm停留时，磁浮力随着保留时间的延长总的变化趋势是降低的，但逐渐趋于稳定，在30min后，样品磁浮力每10min内衰减率小于1%。

It is found that the levitation force degenerates with time , but attenuation trends toward stabilization gradually . After holded 30 min , attenuation rate of the levitation force is less than 1 % every 10 min.

利用Hilbert-Huang变换及Hilbert谱提取传感器信号特征，提出了Lamb波信号在结构中传播时的能量衰减率和损伤敏感度两个考察指标，并据此对激励信号进行优化。

The characteristics of sensor signals are extracted using Hilbert-Huang transform and Hilbert spectrum . Based on the Hilbert spectrum , two criteria for the energy attenuation ratio and the damage sensitivity of Lamb wave propagating in the structure are defined and used to optimize the excitation signal experimentally .

充放电测试说明LiMn2O4的特征容量为120mA/g，循环20次后容量衰减率为4.7%。

Cyclic voltammogram and charge / discharge tests showed that the specific capacity of doped LiMn 2O 4 was 120mAh / g and capacity fade was 4.7 % after 20 cycles .

一般情况下，正常密度与高密度在固井质量良好的条件下，其CBL衰减率比低密度都要高，其套管波首波幅度值都应该比低密度小；

Generally , under conditions of good cement job quality the CBL decay rate of normal density and high density admixture cement is higher than that of low density admixture cement and the head wave amplitude of casing wave is lower .

电化学性能测试表明：微波高分子网络法合成的样品同时具有电化学容量高，放电平台高（约3.8V），循环衰减率低，循环稳定性好等优点，具有较好的推广应用前景。

Results of electrochemistry characters show that samples prepared by microwave polymer network process have higher discharge platform ( about 3.8 V ) and specific capacity , and have good cyclic stability .

频率越高，空圆形隧道中电磁波的衰减率越小；

If frequency is higher , the attenuation rate is smaller ;

对数衰减率适宜于测定界面粘结的破坏。

The log decrement are suitable for determining interface bond damage .

一阶双曲型方程组解的衰减率

Decay Rate of Solution to Hyperbolic System of First Order