Automatic frequency tracking is the most important characteristics of ultrasonic machining power.
频率跟踪是超声电源的一个重要特性。
The automatic carrier frequency tracking scheme is accomplished by two steps in our system.
自动载波频率跟踪部分的设计分了两个主要阶段。
It adopts auto adaptive step to track the frequency offset, so that it can shorten the AFC (Automatic frequency correction) tracking period and improve frequency precision.
新算法可以自适应地调节本振频率跟踪载波频率的阶距，从而很好地缩短了AFC的跟踪时间和改进了频率校正的精度。
Results show that the motor has good stability. The speed fluctuation is controlled within 3% by the frequency automatic tracking technique.
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。
The method is significant to automatic identifying and tracking ultrasonic power supply, and dynamic matching piezoelectric transducer resonant frequency.
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。
Frequency automatic tracking and amplitude stabilizing are two important characteristics of ultrasonic machining power.
频率跟踪和恒定振幅控制是超声加工电源两个重要的特性。
This paper describes the electronic structure of which automatic frequency-tracking has been implemented with help of IC model CD4046 and its operating principle.
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.
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。
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