Description: 该程序描述了二阶锁相环的环路滤波器的设计和线性模型分析-The program describes the second-order PLL loop filter design and linear model analysis Platform: |
Size: 1024 |
Author:vie |
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Description: 。利用理想二阶锁相环构造了三阶
环，对其捕获带宽、时间响应特性、稳定性和误差响应特性进行了仿真研究，分析了三阶环的参数选择
原则和跟踪卫星多普勒频偏的能力，并给出了环路滤波器的数字实现框图-. Ideal second-order phase-locked loop constructed using the third-order loop, its capture bandwidth, time response, stability and response characteristics of the error simulation studies to analyze the third-order loop parameters and track the satellite Doppler shift principle ability, and gives the block diagram of digital implementation of loop filter Platform: |
Size: 187392 |
Author:herui |
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Description: 本论文详细介绍了锁频环中的二阶环路滤波器的设计，以及进行了相应的仿真。-Of this thesis describes a second-order loop filter design in the frequency-locked loop, and the corresponding simulation. Platform: |
Size: 1741824 |
Author:aa |
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Description: The program realization of phase-locked loop, operating environment for matlab, the second-order loop filter Platform: |
Size: 158720 |
Author:madriga1 |
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Description: 提出了一种基于电网电流反馈内环和重复控制外环的双闭环控制策略。利用数字控制固有的一拍延时特性，设计了控制系统内环，实现LCL 滤波器的稳定控制；根据内环闭环传递函数特性，设计了相应陷波器、二阶滤波器以及超前环节作为控制系统外环；同时，引入了给定前馈和电网电压前馈控制环节来抑制电网电压对系统的影响，以增强系统的动态性能。理论分析和实验结果表明，该方法使LCL 型并网逆变器具有稳态精度高、动态性能好以及抗干扰能力强的优点。(the repetitive dual closed-loop control strategy based on grid current feedback was proposed in this paper. The LCL filter was stable due to effective utilization of inherent one-beat delay of digital control. Based on the inner closed-loop transfer function, the corresponding notch filter, the second-order filter and lead-link were designed as a compensator of epetitive control. The gird voltage and current reference feed-forward control suppressed grid disturbance and increased dynamic tracking performances. Theoretical analysis and experimental results show that, the proposed method has the advantages of high steady accuracy, fast dynamic response and strong robustness.) Platform: |
Size: 1813504 |
Author:罗伊斯彭
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Description: A novel method based on a combination of the Extended Kalman Filter (EKF) with Particle Swarm Optimization (PSO) to estimate the speed and rotor flux of an induction motor driveis presented. The proposed method will be performed in two steps. As a first step, the covariance matrices of state noise and measurement noise will be optimized in an off-line manner by the PSO algorithm. As a second step, the optimal values of the above covariance matrices are injected in our speed-rotor flux estimation loop (on-line).Computer simulations of the speed and rotor-flux estimation have been performed in order to investigate the effectiveness of the proposed method. Simulations and comparison with genetic algorithms (GAs) show that the results are very encouraging and achieve good performances. Platform: |
Size: 665750 |
Author:pudn0507@yahoo.fr |
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Description: 环路滤波器是通信信号调制解调中最重要的一个部分，环路滤波器设计的好坏将直接影响到接收机的性能指标，二阶锁频辅助三阶锁相环路滤波器可以稳定跟踪具有加加速度的信号源，是现代通信中非常实用的技术，本文中详细编写了单载波信号产生模块、信道噪声模块、数字正交下变频模块、鉴频鉴相模块、环路滤波器模块，并包含了完整的testbench模块，对于初学者非常有用。(Loop filter is the most important part of communication signal modulation and demodulation. The design of loop filter will directly affect the performance index of receiver. The second-order frequency locking assisted third-order phase-locked loop filter can stably track the signal source with acceleration speed, which is a very practical technology in modern communication. In this paper, the single carrier signal generation module and channel noise are written in detail Sound module, digital orthogonal down conversion module, frequency and phase detection module, loop filter module, and contains a complete testbench module, which is very useful for beginners.) Platform: |
Size: 6156288 |
Author:furypie |
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Search - second order loop filter