Image Reconstruction Algorithm and the Realization of Parallel Magnetic Resonance Imaging 并行磁共振成像的图像重建算法及实现
In power system, it can excite partial parallel resonance or serial resonance, enlarge the harmonic wave, trigger relay protection system in error and disturb electric power energy metering equipment. 在电力系统,它可以刺激局部并联谐振或串联谐振,放大谐波,引发继电保护系统误差和扰乱电力能源计量设备。
Both parallel resonance and series resonance are the two important parts of harmonic resonance problem. 串联谐振与并联谐振共同组成谐振问题的两个重要分支。
When harmonic sources exist in power system, parallel resonance occurs due to the interaction between shunt capacitor bank and system inductance. 当系统中存在谐波源时,无功补偿电容器组与系统电路会在某次谐波频率下发生并联谐振。
A Harmonic Suppression Approach Using Transformer and Parallel Resonance 利用变压器和并联谐振的谐波抑制方法
Research on In variable-angle Control of Parallel Resonance Converter 并联型逆变器定角控制的研究
On the RL-C parallel resonance characteristic curve 关于RL-C并联谐振特性曲线的讨论
Using Parallel Resonance Circuit to Measure Time-Current Characteristics of High Voltage Current-Limiting Fuses 选用并联谐振电路测试高压限流熔断器的时间-电流特性
Study on Parallel Resonance Technique in RF Slab CO_2 Lasers 射频板条CO2激光器并联谐振技术的研究
Operation Mode Analysis of Parallel Resonance Inverter based on IGBT 基于IGBT并联谐振逆变器工作方式的分析研究
Analysis of Parallel Resonance of Reactive Power Compensation Shunt Capacitor Bank 无功补偿电容器组的并联谐振分析
In this paper we analyse some phenomenon in the experiment of the clapp oscillator by means of the phase-frequency curves of the parallel resonance and consider it necessary to look at the relation of the quality factor and frequency stability all sidedly. 本文利用并联谐振的相频特性曲线分析了克拉泼正弦波振荡器实验中的一现象,认为对Q值和频率稳定度的关系应全面理解。
This thesis gets expressions to Q of two LC parallel resonance circuits which are different from each other in form from the definition of Q, and demonstrates that two expressions are the same. 从品质因数的定义推导出两种形式不同的LC并联谐振回路的Q值表达式,并证明二者的统一性。
This paper studies characteristics of piezoelectric transducers working at frequencies near parallel resonance including the automatic power adjustment feature, quality factor, efficiency, driving voltage required, and maximum sustained voltage. 对压电换能器在并联谐振频率附近的特性包括功率自动调节性能、品质因数、效率、激励电压及承受电压等进行了分析研究。
A Periodic Network model of transmission line is used to predict the longitudinal voltage distribution along the electrodes of RF slab CO2 lasers. The extensive practical success of Parallel Resonance Technigue in those lasers is interpreted. Two ways for further voltage uniformity are presented. 本文利用周期性网络模型计算了射频板条CO2激光器电极的纵向电压分布.探讨了并联谐振技术在板条器件中获得成功运用的原因.提出了利用并联谐振技术进一步提高电压分布均匀性的两个途径。
The impedance formula of RL-C parallel resonance circuit is deduced theoretically, and some properties of resonance characteristic curve are analysed. Sufficient condition for the establishment of the RL-C characteristic curve elsewhere is pointed out. 从理论上导出了RL-C并联谐振电路的阻抗公式,由此分析谐振特性曲线性质,并得出文献中引用的RL-C谐振特性曲线成立的充分条件。
This paper analyzes the working process of parallel resonance inverter in different circuit structure and operation mode. 从电路结构、工作方式等方面对并联谐振逆变器的工作过程进行了较全面的分析;
Discussion of Q Factor of LC Parallel Resonance Circuit 试论LC并联谐振回路的品质因数Q
This article aims at the study of possibility of surveying the inductance on inductance coil by means of RL-C parallel resonance circuit. It also approaches deeply the error caused by survey system on the basis of real survey. 本文旨在研究用RL-C并联谐振电路测量电感线圈电感的可能性,并在实际测量的基础上,对测量系统可能带来的误差进行了探讨。
Theory and Reconstruction Method of Parallel Magnetic Resonance Spectroscopic Imaging 并行磁共振波谱成像理论及图像重建方法研究
How the Resistance Broadens Transmission Bands in Parallel Resonance Loop 彩电中放谐振回路并联电阻展宽通频带原理分析
Hen transmitting amplitUde shift keying modulation singal and take LC Parallel resonance circuit as aerial, rectangle pulse may have appeared obvious waveform distortion. 用LC并联谐振回路作为天线发送振幅键控调制信号时,会出现较大的波形失真。
On some relations between RL-C parallel resonance variables and Q RL-C并联谐振态量与Q的几个关系式
Measuring exactly the resonant frequency of the RLC parallel resonance circuit using Origin transformaton coordinates 用Origin变换坐标精确测量RLC并联谐振电路的共振频率
The "Q" Calculate and Discuss about Impedance Peak in RL-C Parallel Resonance Circuit RL-C并联谐振电路Q值的计算和阻抗峰值的讨论
Discussion of parallel connection current resonance and overcompensation in filter compensating system 滤波补偿系统并联谐振及过补偿问题的探讨
The parallel resonance frequency of the crystal. General formulas of the oscillating frequencies of the three basic oscillator circuits and the required transconductance of the tube are given. 文中还给出了三种基本振荡电路的振荡频率的普遍公式。
Parallel Magnetic Resonance Imaging: Past, Present and Future 并行磁共振成像的回顾、现状与发展前景
Parallel stochastic resonance effectively enhance the weak signal SNR. The method has been applied to simulation data and the actual fault signal analysis, and achieved good results. 并联随机共振有效增强了微弱信号的可识别性,将该方法应用于仿真数据和实际故障信号分析中,取得了良好的效果,结果证明,该方法的故障识别方面具有优越性。
Conventionally, passive LC filters have been employed to eliminate line-current harmonics and to improve the power factor. However, the harmonic problem still persists because of its inability to compensate random frequency variations in currents, tuning problems and parallel resonance. 以前我们采用无源LC滤波器来消除线路电流谐波、提高功率因数,然而因为它不能实时补偿随机变化的电流,并进行自动调整,所以谐波问题仍然存在。