The invention relates to an active frequency identification label, a system and an identification method.
本发明为一种有源射频识别标签、系统及识别方法。
According to joining the different disturbance, this method can be divided into active frequency drift with fixed disturbance method and active frequency drift with feedback method.
该方法根据加入扰动的不同，可以分为固定扰动的主动移频式孤岛检测方法和带反馈的主动移频式孤岛检测方法。
The results indicate that non-detection zone of active frequency drift with feedback method is obviously less than non-detection zone of active frequency drift with fixed disturbance method.
结果表明，带反馈的主动移频式孤岛检测的检测盲区明显小于固定扰动的主动移频式孤岛检测的检测盲区。
This paper proposed a novel active frequency drift with feedback based on single-phase single stage PV grid-connected generation system for the complexity of the control in traditional method.
基于单相单级光伏并网发电系统，针对传统主动式频率偏移法控制的复杂性，采用了一种新颖的带反馈的主动式频率偏移法。
Crewed by civilians, Impeccable is equipped with an active low-frequency towed array with a series of modules, each housing two high-powered transducers.
“无瑕号”由平民操作，装备有主动探测的低频声纳，具备一系列的模块，每一模块配有两个大马力的传感器。
WHO has been active in the evaluation of health issues raised by exposure to electromagnetic fields (EMF) in the frequency range from 0 to 300 GHz.
世界卫生组织一贯积极评估暴露于频率从0至300赫兹的电磁场(emr) l产生的健康问题。
System frequency of substation is dependant on active load of power grid. when system frequency exceeds allowable limits load shall be regulated immediately for stabilization of system frequency.
变电站的系统频率由电力网的有功负荷来决定，当系统频率超出允许范围时，应及时调整所带负荷以稳定系统频率。
When disconnected with external power grid due to certain fault, it will result in frequency collapse, and even leads to large-scale blackout owing to the active power imbalance.
当故障导致供电系统与外电网断开后，此时供电系统因有功不平衡，将出现频率崩溃现象，导致大面积停电事故。
The active filter acts as an infinite impedance to the external for the fundamental frequency and as a low resistor for harmonic frequencies.
对外电路而言，在基波频率下有源滤波器被控制为无限大阻抗，在谐波频率下被控制为小电阻。
It has a high density of active volcanoes, and a high frequency of volcanic eruptions.
它有高密度的活火山与高频率的火山爆发活动。
The types, principles, features, and applications of displacement sensor used in ultra-low frequency active vibration isolation control are introduced.
介绍了超低频主动隔振控制中常用的位移传感器的类型、工作原理、结构特点及适用范围。
Thus research has been going on for some time in the area of low frequency active (LFA) towed array sonar.
如此研究一直在低频率活跃的 （LFA）被拖的排列声纳的区域中继续有一些时间之久。
It is researched the preparation of ceramic layer on the surface of M5 zirconium alloy by high-frequency induction oxidation process in active flow oxygen medium and in dry air.
在活性氧流动介质和干空气中，用高频感应氧化工艺在M5锆合金表面生成氧化锆陶瓷膜进行了研究。
A feasible scheme using PAL TV signal for proceeding active time and frequency transfer and synchronization is described in this paper.
本文介绍了利用PAL制电视信号进行有源电视时间频率传递与同步的一种可行的方案。
When applied to active power filter, this novel control scheme not only reduces the switching frequency and the switching loss, but also has better performance and robustness.
该控制策略在有源电力滤波器的应用，不仅大大减小了开关频率、降低了开关损耗，而且具有很强的鲁棒性和更好的控制精度。
Active band-pass filters are widely used in signal analysis and measuring because of its good amplitude-frequency property.
有源带通滤波器以其良好的幅频特性，在信号的分析与测量中得到广泛应用。
Automatic generation control (AGC) is one of the important measures to regulate the frequency and active power of power grid and ensure its security and economic operation.
自动发电控制(agc)是调整电网频率与有功功率、保证电网安全、经济运行的重要措施之一。
By applying frequency analysis method to a standard active band-pass filter circuit, a formula to calculate characteristic frequencies is offered.
根据标准有源带通滤波器原理，采用频域分析法，可得出有源带通滤波器的特征频率计算公式。
In the paper aiming at the problem of low frequency noise transmission through double panel structure, feedback active noise control technique is adopted to control noise transmission.
本文对于低频噪声在双层板结构中传播的问题，探讨采用反馈的主动噪声控制技术以达到控制噪声传播的目的。
In this paper, we theoretically analyses the distribution of the active power and the regulation principle of the frequency differences between the parallel operating generators.
采用集成电路实现舰船电站自动频载调节，从理论上分析了并联运行机组间的有功功率分配以及频差调节原理。
A capacitive proximity switch works with a high frequency oscillating circuit that creates an electromagnetic field on the active sensor surface by means of a capacitor.
阿电容式接近开关工程高的振荡电路，产生的积极传感器表面磁场的电磁通过一个电容手段的频率。
This thesis discusses the performance of the piezo-ceramic actuator and it's active narrowband vibration isolation technique of high frequency flexible structure based on resonant case.
本文讨论了压电陶瓷作动器的性能和基于共振情况下的柔性结构的高频窄带主动隔振技术。
Experimental results for many video sequences show that the method can eliminate high frequency tremble, remain active motion of camera and realize real time image stabilization satisfactorily.
实验结果说明该方法可以较好地去除高频抖动，保留摄像机的主动运动，实现实时稳像。
The basic operation principle of the series active power filter for harmonic suppression of frequency converter is analyzed in this paper, and its control method and control circuit are studied.
文章分析了适用于变频器谐波抑制的串联型有源电力滤波器的基本工作原理，并对其控制方法和控制电路进行了研究。
With analyzing the detecting procedure of Low-frequency active sonar and emulating about it, the Optimum Detection frequency Band of Low-frequency active sonar were researched.
本文通过对低频主动声纳的主动声纳方程的分析与声学探测过程的仿真，初步研究了低频主动声纳在不同距离上的最优探测频率问题。
The CAA can study and analyse the effects of all elements on the amplitude-frequency characteristic of active Filter systematically.
该CAA能系统地研究和分析二阶低通有源滤波器的各元件值对幅频特性的影响。
If active filter circuit is adopted, wet tantalum capacitor will face test of high voltage and high frequency.
一旦采用有源滤波电路，钽电容器将面临高压和高频性能的严峻考验。
The seismicity levels on the active tectonic block boundaries are discussed considering the large earthquake frequency and the released strain energy in unit distance and time.
从各边界带上强震活动的频次和单位时间、单位长度的地震应变能释放出发，讨论了各活动地块边界带的强震总体活动水平；
The seismicity levels on the active tectonic block boundaries are discussed considering the large earthquake frequency and the released strain energy in unit distance and time.
从各边界带上强震活动的频次和单位时间、单位长度的地震应变能释放出发，讨论了各活动地块边界带的强震总体活动水平；
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