系统的分析了频率跟踪移相PWM控制全桥供电的串联谐振负载式DBD型臭氧发生器电源系统的工作过程。
The working processes of the frequency-tracking phase-shift PWM controlled full bridge power supply load series resonant type DBD ozone generation power system are analyzed.
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.
在时序方面采用CPLD来控制，同时实现了频率的跟踪和同步采样功能。
In the time sequence control respect, it USES CPLD to realize frequent tracking and synchronized sampling function.
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.
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.
控制回路由启动、频率跟踪、驱动信号、缺水保护电路组成。
The controlling loop includes start-up circuit, frequency tracking circuit, driving signal circuit, and water lack protecting circuit.
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.
例如，可以使用跟踪条来控制系统的鼠标速度或光标闪烁频率。
For example, you might use the track bar to control the cursor blink rate or mouse speed for a system.
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.
实验结果验证了定子磁链定向的矢量控制策略既能保证定子输出频率恒定，又能较好地跟踪风力机的最大功率输出。
The stator flux-oriented vector controlling strategies of keeping stator frequency constant and capturing the maximum wind power are verified by experiment results.
本文主要研究了基于全数字锁相环的谐振型逆变器频率跟踪的数字化控制方案。
The paper studies digital control scheme of resonance inverter frequency-tracking based on all digital phase-locked loop.
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。
Frequency automatic tracking and amplitude stabilizing are two important characteristics of ultrasonic machining power.
根据系统的带宽，在控制器中加入低通滤波器，以保证系统跟踪效果，过滤控制信号中频率过高部分。
According to the system bandwidth, the low pass filter was added in controller to assure the tracking effect of system and filter the super-high frequency in control singles.
实验表明：该控制器能够跟踪抖动系统的自然频率漂移，保证抖动系统的安全工作。
It is proved that this dither controller can track the drift of dither mechanism's nature frequency, and keep the dither system work safely.
由于引入自适应控制，使水轮发电机组的参数变化时，系统的稳定性和频率跟踪性能得到改善。
Owing to MRAC, stability and frequency following behavior of hydroelectric generating set can be improved when the parameters of the set vary.
本文利用频率跟踪和移相控制技术，使电源输出频率跟踪负载谐振频率变化，以保证最佳加热效率。
It could ensure the best efficiency by making the output frequency to trace the resonance frequency with the frequency tracing technique and phase-shifted control.
在对现有各种感应加热装置功率控制方式比较的基础上，提出一种基于频率跟踪的新型的、较优的PW M功率调节方式。
Based on comparing with the different power modulation, a novel and better PWM based on follow tracing is proposed in this paper.
实验测试结果表明，所设计的数字式自适应控制器具有频率跟踪和摆幅控制精度高的特点。
The testing data from simulated aerospace environment show that the adaptive controller has a characteristic of high accuracy of frequency-tracking as well as high accuracy of swing scan control.
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.
本文针对空间环境下摆幅扫描机构的频率跟踪和摆幅控制问题，提出了一种具有频率跟踪的自适应控制算法。
A new adaptive frequency-tracking control algorithm for the swing scan mechanism has been presented in the aerospace environment.
本文针对空间环境下摆幅扫描机构的频率跟踪和摆幅控制问题，提出了一种具有频率跟踪的自适应控制算法。
A new adaptive frequency-tracking control algorithm for the swing scan mechanism has been presented in the aerospace environment.
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