This design is the use of leading correction principle, finally meet the performance index of a control system open loop gain, phase margin, angular frequency requirements.
本设计利用超前校正原理，最终满足对控制系统性能指标开环放大系数、相角裕量、截止角频率的要求。
In order to solve the problem mentioned above, a novel design which combines three phase fourlegs inverter, repetitive controller and PI double loop control.
本文将三相四桥臂逆变器与重复控制技术、PI双闭环控制相结合，满足了非线性不平衡负载的要求。
The primary factor affecting fast phase lock is analyzed by using MATLAB. Then a fast all digital phase locked loop with a high precision automatic modulus control is proposed.
应用MATLAB分析了影响锁相环快速锁定的主要因素，提出了一种具有高精度自动变模控制的快速全数字锁相环。
An automatic accurate synchronization control scheme which adopts phase locked loop principle is presented.
利用锁相环路原理提出锁相自动准同期控制方案。
Second, an Enhanced Phase Locked Loop (EPLL) control strategy based on improved Adaptive Notch Filtering (ANF) is proposed, controller parameters are optimized using BF-PSO algorithm.
其次，提出了一种基于改进型ANF的三相EPLL控制策略，并用BF-PSO算法对控制器参数进行优化设计。
A fast all digital phase-locked loop with automatic modulus control is presented.
提出了一种具有自动变模控制的快速全数字锁相环。
The position loop use the PD control algorithm, to increase the system's phase margin, reduce the system's oscillation and ensure that the control system has good dynamic characteristics.
位置回路采用PD控制算法，以增加系统相位裕度，减弱系统振荡，保证控制系统具有良好的动态特性。
The software phase-locked loop (SPLL) technology in the steady speed control of permanent magnet brushless DC motor (BLDCM) in gyro was discussed.
研究了软件锁相环技术在陀螺用无位置传感器无刷直流电机稳速控制系统中的应用。
The paper studies digital control scheme of resonance inverter frequency-tracking based on all digital phase-locked loop.
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 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.
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。
In the experiment, the feasibility of the digital control is validated for amplitude and phase close loop operation in driven mode.
通过实测，验证了他激模式下幅度控制环路和相位控制环路中实现数字式控制的可行性。
The frizzy logic control is used to estimate the unknown uncertainties, and guarantees the robustness of the closed-loop system in the reaching phase synchronously.
模糊逻辑控制用来估计系统未知的不确定性因素，并同时保证了闭环系统在变结构控制到达阶段的鲁棒性。
The phase-locked system is a closed loop automatic control system that can follow the frequency and phase of the input signals.
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 control strategy can guarantee the existence of sliding phase for the closed-loop system.
该控制策略保证了闭环系统滑动阶段的存在性。
In order to make more effective control of universal power quality controllers (UPQC), an outer loop model for the voltage loop in a three-phase three-wire UPQC is proposed in the paper.
为了对通用电能质量控制器直流侧电压进行更为有效的控制，提出一种用于三相三线通用电能质量控制器(UPQC)直流侧电压控制的外环模型。
Digital phase lock loop base on fuzzy logical control, which is used to recover carrier in communication system.
基于模糊逻辑控制的数字锁相环，用于通信系统中的载波恢复。
The control strategy can guarantee the existence of the closed-loop system's sliding phase, furthermore, based on which, global stability of sliding motion on sliding surfaces is proved.
该控制策略保证闭环系统滑动阶段的存在性，并在此基础上证明滑动模态运动的稳定性。
The simplified method has been adopted to confirm the limit frequency of limit circle of phase-lock control loop. The general expression of the capture band has been derived.
采用简化的方法确定锁相回路的极限环频率极限，推导出捕捉带的一般表达式；
The control system is made of double closed loops: the inner current loop and the outer temperature loop, and satisfies the EAF's temperature need and three phase current balance.
采用温度控制外环和电流平衡控制内环的双闭环结构实现电弧炉温度和电极三相电流平衡的智能集成控制。
The phase lock loop is a feedback control system that makes two telecommunication signals' phase synchronization, suitable to the synchronous trigger circuit of the convertor device.
锁相环路是完成两个电信号相位同步的反馈控制系统，适宜于变流装置的同步触发电路之中。
The principle of phase lock loop and its application in the motor power-measuring system are introduced, furthermore the design and analysis of the circuit for constant speed control are provided.
介绍了摊铺机行驶控制系统的基本要求，以单边行驶回路为例探讨了其工作原理； 根据摊铺机对行驶速度的要求，分析了恒速控制技术，探讨了行驶系统控制方式。
Further study of Circuit exchange regulator presents, takes the starting current as feedback signal to complete closed-loop control of soft start control of the three-phase induction motor.
对交流调压电路进行了进一步的研究，利用起动电流信号作为反馈量，对三相感应电动机软起动控制系统进行闭环控制。
A practical open-loop control system for the three-phase grid inverter was also developed in the work.
实际开发了一套针对三相并网逆变器的开环控制系统。
On the basis of three-phase inverting circuit, this paper describes how to make the control method of open loop system in closed loop system.
以三相逆变电路为基础，阐述了如何将开环系统的控制方法用于闭环系统，并且介绍了这种新的控制方法在实际中的应用，证明了该方法的有效性。
Finally, relative experiments of 3-phase ac motor SVPWM open-loop control are achieved using this experiment platform, the testing result of system comes to the request designed.
最后，在该实验平台上实现了三相交流电动机SVPWM算法的开环控制实验，实验结果表明系统达到了设计要求。
PWM timing is the most advanced one among all 3-phase asynchronous motor timing methods. This article introduces the essential components of PWM control loop, and the key parts of the loop.
PWM调速是当前三相异步电动机调速中最有前途的一种方法。本文在介绍了PWM调速方法的基础上，对其中的关键环节进行了较深入的研究。
PWM timing is the most advanced one among all 3-phase asynchronous motor timing methods. This article introduces the essential components of PWM control loop, and the key parts of the loop.
PWM调速是当前三相异步电动机调速中最有前途的一种方法。本文在介绍了PWM调速方法的基础上，对其中的关键环节进行了较深入的研究。
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