本文对具有自动频率跟踪和反馈稳幅功能的电磁振动机械进行了研究。
The electromagnetic vibrational machine which has function of automatic frequency follow-up and stable amplitude was studied.
对常用的叉积自动频率跟踪环（CPAFC）进行了改进，改进后的鉴频算法具有更快的捕获速度。
This article has made the improvement to CPAFC which be commonly used. After the improvement frequency discrimination algorithm has the quicker capture speed.
以汽轮机内蒸汽湿度的准确测量为目的，设计了基于微波谐振腔微扰法的蒸汽湿度测量系统：自动频率跟踪系统和等精度频率测量系统。
A wetness measurement system based on cavity perturbation method is designed for precise measuring, including automatic frequency tracing system and equal precision frequency measurement system.
系统高精度、低成本，适用于任何状态的导航以及高频率的输出，可以用于诸如载体跟踪、航空、自动采矿以及精细农业等广泛的应用领域。
Due to its high accuracy, low-cost, full navigation states, and high output rate, the system has wide applications, such as vehicle tracking, aviation, automatic mining, and precise farming.
锁相系统是一个能够跟踪输入信号频率和相位的闭环自动控制系统。
The phase-locked system is a closed loop automatic control system that can follow the frequency and phase of the input signals.
锁相环路是一种能实现相位自动锁定的控制系统，主要用于频率合成及跟踪解调系统。
The phase- locked loop is one kind of control system which is able to achieve phase automatic lock, to compose frequency and to trace demodulation system.
实验结果表明，该电机具有良好的稳定性，利用频率自动跟踪技术对电机转速进行闭环控制，可以将其转速波动稳定在3%之内。
Results show that the motor has good stability. The speed fluctuation is controlled within 3% by the frequency automatic tracking technique.
在线调节步长改变电压收敛速度，设计锁相控制电路，自动同步跟踪电网频率和相位。
The online variable step can also regulate the voltage convergence rate, and the phase-locked control circuit is designed to synchronously trace frequency and phase of power grid automatically.
采用具有频率自动跟踪系统的超声清洗设备对滤布进行强化清洗试验。
The experiment of filter fabric ultrasonic cleaning is fulfilled by the ultrasonic cleaning device with frequency auto-tracking system.
实验结果表明，研制的智能超声波发生器频率跟踪迅速准确，并能实现振动系统的恒定振幅控制，可以实现振动系统的自动运行。
Preliminary experiments show that the smart ultrasonic generator based on the new method can quickly and accurately frequency track, and can work well with constant amplitude control.
采用频率自动跟踪技术来解决信号丢失问题，抑制了各种噪声和干扰。
It tracks the frequency automatically to resolve the dropout of signal and to restrain all kinds of noises and disturbances.
提出了电源的逆变电路进行开关频率的自动跟踪时，避免电路进入似谐振状态而工作于谐振状态的方法。
Finally avoidance method of working in pseudo-resonant state during the inverter's switching frequency tracing control is suggested.
自动载波频率跟踪部分的设计分了两个主要阶段。
The automatic carrier frequency tracking scheme is accomplished by two steps in our system.
功率超声设备中，频率自动跟踪技术是一个重要课题。
It is important that the frequency of ultrasonic generator tracks the transducer mechanical resonance in the power ultrasonic equipment.
它能自动跟踪功率超声发生器的谐振频率，同时还可根据需要自动调节输出功率，并具备显示报警功能。
This power supply can automatically trace the resonant frequency of an ultrasonic generator, automatically adjust its power output according to needs, and has an alarm display function.
本文叙述了用CD 4046锁相环实现频率自动跟踪的电路结构和工作原理。
This paper describes the electronic structure of which automatic frequency-tracking has been implemented with help of IC model CD4046 and its operating principle.
因此，在理论上，该方案的跟踪精度要优于叉积自动频率控制环。
Therefore, in theory, tracking precision of the proposed scheme will precede CPAFC.
样机运行结果表明，控制系统能随外部干扰和负载变化自动跟踪谐振频率，并有可靠性好，电路简单，抗干扰能力强的特点。
The prototype operation indicate that control system can automatically adapts the drift of parameters with the new wethod. It has such character as high reliable, simple circuit and good anti-jamming.
该方法对超声波电源实现自动识别、跟踪以及动态匹配压电换能器谐振频率等具有非常重要的参考作用。
The method is significant to automatic identifying and tracking ultrasonic power supply, and dynamic matching piezoelectric transducer resonant frequency.
为保持电机速度的稳定性，该文提出了一种具有新颖的频率自动跟踪功能的超声波电机驱动源。
This paper presents the driving principle of ultrasonic motor, with the design of driving power based on it.
为保持电机速度的稳定性，该文提出了一种具有新颖的频率自动跟踪功能的超声波电机驱动源。
This paper presents the driving principle of ultrasonic motor, with the design of driving power based on it.
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