scholarly journals A Novel Fast Resonance Frequency Tracking Method Based on the Admittance Circle for Ultrasonic Transducers

2020 ◽  
Vol 67 (8) ◽  
pp. 6864-6873 ◽  
Author(s):  
Jin-dong Wang ◽  
Jia-jia Jiang ◽  
Fa-jie Duan ◽  
Fu-min Zhang ◽  
Wei liu ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Ultrasonic Transducers ◽  
Frequency Tracking ◽  
Tracking Method

Study of Induction Heating Power Supply Based on 74HC4046

2014 ◽  
Vol 1008-1009 ◽  
pp. 663-667 ◽  
Author(s):  
Yan Cui ◽  
Xiao Jun He ◽  
Ze Ping Lin ◽  
Qing Bin Chen ◽  
Wei Hao Yang ◽  
...  
Keyword(s):  
Resonance Frequency ◽  
Induction Heating ◽  
Power Supply ◽  
Simulation Experiment ◽  
Tracking System ◽  
Output Frequency ◽  
Phase Compensation ◽  
Frequency Tracking ◽  
Iron Load ◽  
Inverter Power Supply

According to the change of resistivity and magnetic permeability of iron load which will influence the resonance frequency in the process of induction heating, this paper presents a frequency tracking system based on the 74HC4046. It can control the output frequency of the power supply in real time, and make the power output frequency to trace the resonance frequency of load. This paper also analyses the phase compensation of the control system, and proposes a new way of phase compensation. The corresponding simulation experiment is done finally. It provides the theory basis to analyze and design an inverter power supply.

Implementation and Performance Assessment of a Vector Tracking Method Based on a Software GPS Receiver

2011 ◽  
Vol 64 (S1) ◽  
pp. S151-S161 ◽  
Author(s):  
Sihao Zhao ◽  
Mingquan Lu ◽  
Zhenming Feng
Keyword(s):  
Global Positioning System ◽  
Carrier Frequency ◽  
Gps Receiver ◽  
Tracking Loop ◽  
Frequency Tracking ◽  
Tracking Method ◽  
Global Positioning ◽  
Vector Tracking ◽  
Tracking Loops ◽  
And Performance

A number of methods have been developed to enhance the robustness of Global Positioning System (GPS) receivers when there are a limited number of visible satellites. Vector tracking is one of them. It utilizes information from all channels to aid the processing of individual channels to generate receiver positions and velocities. This paper analyzes relationships among code phase, carrier frequency, and receiver position and velocity, and presents a vector loop-tracking algorithm using an Extended Kalman filter implemented in a Matlab-based GPS software receiver. Simulated GPS signals are generated to test the proposed vector tracking method. The results show that when some of the satellites are blocked, the vector tracking loop provides better carrier frequency tracking results for the blocked signals and produces more accurate navigation solutions compared with traditional scalar tracking loops.

Three-point Frequency Tracking Method

2009 ◽  
Vol 8 (6) ◽  
pp. 425-442 ◽  
Author(s):  
P. Frank Pai
Keyword(s):  
Frequency Tracking ◽  
Tracking Method

scholarly journals An approved frequency tracking method in connected element interferometry

2017 ◽  
Vol 139 ◽  
pp. 00053
Author(s):  
Qiang Zhao ◽  
Kang Gao ◽  
Xiaomin Hou
Keyword(s):  
Frequency Tracking ◽  
Tracking Method

Stability Design of Resonance Frequency Tracking System for Sensing Resonator

2020 ◽  
Vol 20 (5) ◽  
pp. 2570-2577
Author(s):  
Jun Xu ◽  
Hui Li ◽  
Xiao Wang ◽  
Danni Liu ◽  
Lishuang Feng
Keyword(s):  
Resonance Frequency ◽  
Tracking System ◽  
Frequency Tracking
Sign in / Sign up

Export Citation Format

Share Document