resonant frequency

Two analysis method of resonant frequency in thermoacoustic systems

末日意识热声系统谐振频率的模拟分析

A dither controller should have an amplitude control loop and a resonant frequency-track loop.

通过对抖动控制器的分析，得出了抖动控制器必须具有幅度控制环和频率跟踪环两个控制环路的结论。

The frequency selectivity relies on the interaction between periodic structure and electromagnetic wave, which behaves as the total reflection ( for patches) or transmission ( using apertures) in the neighborhood of the element resonant frequency.

FSS的频率选择性源于其周期性结构与电磁波的相互作用。当入射波的频率接近贴片或孔径的谐振频率点时，FSS表现出全反射或全透射特性。

A FFT spectrum analyzer was used to measure the resonant frequency.

试验时采用六种实大尺寸试材,共振频率之测定系利用FFT频谱 分析仪.

Preliminary test results indicated that the accelerometer has better frequency response well above the resonant frequency, and the output signal is in correspondence with the input.

初步测试结果表明，检波器在共振频率以上有较好的频率响应，输入信号与输出信号吻合得较好。

The complex resonant frequency and radar cross abation ( RCS ) are formulated by spectral domainapproach of periodic structure.

运用无限周期结构的诸城法建立起微带阵列天线的复谐振频率和雷达散射截面公式.

The effects of change in culture medium properties and bacteria adhesion on sensor resonant frequency were investigated with quartz crystal microbalance ( QCM), microscopy imaging.

利用石英晶体微天平（QCM）、显微成像等手段研究了培养液性质变化和细菌吸附对传感器共振频率的影响。

The results showed that the resonant frequency decreased slightly with increased number of mortise holes.

此一结果将有助于对老旧建材弹性留存率之评估,有助于此等建材之有效再利用.

The resonant solution on forced oscillation of A2B model is given and the modes of vibration on resonant frequency are discussed.

给出了A2B模型受迫振动的两个共振解，讨论了共振频率下的振动模式。

Resonant controller is applied and the neutral point current which caused the medium vector is introduced for feed forward control to eliminate low-frequency voltage ripples.

在中点电压控制器中采用谐振控制器以及加入中矢量对中点电流的作用作为前馈以消除中点电压中的三倍频分量。

Methods The Biot-Savart's law was applied, a high-pass 8-leg birdcage coil, whose resonant frequency was consistent with~ 3H and~ 129 Xe, was designed through some related calculations and simulations. IDL was used to calculate and simulate our scheme.

方法运用毕奥-萨伐尔定律，通过计算分析，设计了针对3H，129Xe共振频率的8列高通笼式线圈，利用IDL软件进行相关计算和仿真。

Detail view of sensor to measure the inner pipe's resonant frequency.

用来测量内管共振频率之感测器详图.

Some Problems of Altazimuth Mounting Telescopes Resonant Frequency and Azimuth Bearing Rigidity of Altazimuth Large Reflector

地平式天文望远镜的有关问题大型地平装置反光望远镜的共振频率与方位轴支承刚度

A Research and Design of Crystal Resonator Resonant Frequency Regulation System Based on Laser Marking

基于激光打标技术的晶振频率校准系统的研究与设计

It is proven that strain is an effective method to tune the band structures of semicondutors, critical temperature of superconductors, phase separation of colossal manganites, polarized states of ferroelectric, resonant frequency of ferrites and magnetoelectric coupling of multiferroics, etc..

研究表明，应变可以有效调控半导体材料的能带结构、超导体的临界温度、庞磁电阻材料的相分离、铁电体极化状态、铁氧体的共振频率以及多铁体的磁电耦合等物理现象。

Resonant Frequency and Altitude Bearing of the Optical Tracking Telescope Tube

光学跟踪仪器镜筒的振动频率与旋转轴支承

By two different forms of capacitive loading unit, one mode resonant frequency declines, while the other modes resonant frequencies remain almost unchanged.

通过两种不同形式的电容性加载单元降低了六角形谐振器中特定模式的谐振频率，而其它谐振模式的谐振频率几乎保持不变。

The existence of components decreases the shielding effectiveness and resonant frequency.

元件的存在使得机箱的屏蔽效能降低,谐振频率下降.

The method of computation resonant frequency of cavity by using FDTD method is discussed.

给出了用FDTD提取腔体谐振频率的人工损耗法.

Keywords: ultrasound, achilles tendon, mechanical properties, resonant frequency.

关键词: 超音波 、 阿基里斯腱 、 机械特性 、 共振频率.

A kind of piezoelectric vibrator test system for the electric parameters was studied, This system can test the resonant frequency 、 quality factor and electromechanical coupling coefficient of piezoelectric vibrator by measuring the relation of Frequency-Impedance of piezoelectric vibrator.

研究了一种压电振子电学性能自动测试系统，系统通过对压电振子频率-阻抗关系的测量得到压电振子的谐振频率、品质因数和机电耦合系数等电学参数。

Through circuit resonance, dielectric barrier discharge power supply outputs a high frequency and high voltage of sine waveform to produce dielectric barrier discharge. Through DC input voltage regulation and circuit resonant frequency tracing, approximate linear load power regulation can be realized by the power supply.

利用电路谐振产生高频高幅值的正弦波电压的介质阻挡放电电源，通过调整电源的逆变电路的直流输入电压，同时逆变电路开关频率跟踪电路谐振频率，可以实现介质阻挡放电负载功率的近似线性调整。

Axis symmetrical radial vibration of a thin annular plate with tapered section plane is studied and the equivalent circuit is derived by using electromechanical analogy method. Based on the circuit, the resonant frequency equation are obtained.

基于机电类比原理，给出了锥形剖面薄圆环形聚能器的轴对称径向振动等效电路，由等效电路得出了其径向共振频率方程。

Ameliorating to Track the Series Resonant Frequency of the Ultrasonic Vibration System with Phase-Locked Loop

锁相环跟踪超声振动系统谐振频率的改进

The impacts of all the dimension parameters on both input impedance and resonant frequency of the printed IFA are simulated, and the impact regularity along with the antenna design method is given as well, based on which a small size printed IFA for Bluetooth WHAN is designed.

仿真印制IFA各尺寸参数变化对其输入阻抗和谐振频率的影响效果，给出其规律及设计方法，并设计出一例适用于蓝牙WHAN的小尺寸印制IFA。

Film bulk acoustic resonators ( FBARs) exhibit high resonant frequency, high mass sensitivity, small size and CMOS-compatibility, thus making this technology a promising candidate for chemical and biology sensors.

薄膜体声波谐振器（FBAR）具有谐振频率和质量灵敏度高，尺寸小及与CMOS工艺兼容等特点，这些特点使FBAR技术成为制备生物化学传感器的理想技术。

Effect of bolt tightening torque on the resonant frequency, vibration dynamic resistance and dynamic inductance has been studied during. 5.

探究了振子装配过程中螺栓预紧力矩对振子的谐振频率、动态电阻和动态电感三个性能参数的影响。

The relationship between resonant frequency band and cell size in left-handed materials

左手材料的响应频段和单元尺寸关系的研究

System, there are two experimental approaches: one is fixed frequency to a constant force load test; a sine sweep signal through the loading mechanism to find the resonant frequency, then resonant frequency of the loading experiments, such experiments to compare the energy conservation.

系统有两种加载控制方式：一种是定频率以恒定作用力控制加载；一种是通过正弦扫频信号寻找加载机构的谐振频率，然后以谐振频率进行加载，这种试验方式比较节约能源。

Characteristic parameters of the target reflect its own scattering characteristics, including the complex polarization scattering matrix, the distribution of the target scattering centers and the resonant frequency.

目标的特性参量反映的是目标自身所固有的散射特征，包括复极化散射矩阵、散射中心分布和谐振频率等等。