scholarly journals Аналитическое решение задачи синтеза трехзвенного ступенчатого чебышевского СВЧ-фильтра

2022 ◽  
Vol 48 (5) ◽  
pp. 47
Author(s):  
А.С. Арефьев
Keyword(s):  
Transmission Line ◽  
Wave Impedance ◽  
Microwave Filter ◽  
Fourth Degree ◽  
Frequency Responses ◽  
Filter Synthesis ◽  
Single Link

The problem of synthesis of the three–link stepped Chebyshev's microwave filter is reduced to two independent fourth degree equations, including a single link wave impedance as unknown. The solution of Descartes – Euler is applied to these equations. It is proved, that in case of wave impedances of extreme links are equal, the problem of the filter synthesis has two solutions. Identical phase–frequency responses correspond to these solutions. It is proved, that for every one of links a product of the wave impedances, relating to these solutions, is equal to a square of the wave impedance of transmission line, including filter.

Study on a Method of Single – Phase Grounding Fault Locating for Hybrid Transmission Line

2012 ◽  
Vol 614-615 ◽  
pp. 1075-1080
Author(s):  
Li Gao ◽  
Hong Chun Shu
Keyword(s):  
Transmission Line ◽  
Network Topology ◽  
Fault Location ◽  
Single Phase ◽  
Distribution Network ◽  
Discontinuity Point ◽  
Wave Impedance ◽  
Matrix Algorithm ◽  
The Matrix ◽  
Hybrid Transmission

It is difficult to achieve precise fault location for hybrid transmission line of distribution network, because it has wave impedance discontinuity point. Section location is the premises of precise location. On the basis of others’ research results, the matrix algorithm of distribution network single-phase ground fault section location is improved in the paper. It makes the sparse degree of matrix is higher, computation is less. An algorithm of recovery the network topology only based on the fault description matrix is suggested when the visualization data of a line network topology is loss or the operating is in the non-visual condition. The method is applied to revise fault description matrix, so that the matrix algorithm has some fault-tolerance. The applicability and validity of the improved algorithm was verified by an illustration. The method realizes the fault section location, and the subsequent accurate fault location is presented in this paper.

Design, Analysis, and Optimization of a New Two-DOF Articulated Multi-Link Robotic Tail

2019 ◽  
Author(s):  
Yujiong Liu ◽  
Pinhas Ben-Tzvi
Keyword(s):  
Kinematic Model ◽  
Low Frequency ◽  
Detailed Design ◽  
Frequency Responses ◽  
Transmission Design ◽  
Redundant Design ◽  
Hybrid Mechanism ◽  
Single Link ◽  
Inertial Loading ◽  
Design Challenges

Abstract Based on observations from nature, tails are believed to help animals achieve highly agile motions. Traditional single-link robotic tails serve as a good simplification for both modeling and implementation purposes. However, this approach cannot explain the complicated tail behaviors exhibited in nature where multi-link structures are more commonly observed. Unlike its single-link counterpart, articulated multi-link tails essentially belong to the serial manipulator family which possesses special transmission design challenges. To address this challenge, a cable driven hyper-redundant design becomes the most used approach. Limited by cable strength and elastic components, this approach suffers from low frequency responses, inadequate generated inertial loading, and fragile hardware, which are all critical drawbacks for robotic tails design. To solve these structure related shortcomings, a multi-link robotic tail made up of rigid links is proposed in this paper. The new structure takes advantage of the traditional hybrid mechanism architecture, but utilizes rigid mechanisms to couple the motions between ith link and i + 1th link rather than using cable actuation. By doing so, the overall tail becomes a rigid mechanism which achieves quasi-uniform spatial bending for each segment and allows performing highly dynamic motions. The mechanism and detailed design for this new tail are synthesized. The kinematic model was developed and an optimization process was conducted to minimize the bending non-uniformity for the rigid tail.

A triple broadband microwave filter synthesis using nonuniform lines

2008 ◽  
Vol 50 (12) ◽  
pp. 3039-3045 ◽  
Author(s):  
Jhin-Fang Huang ◽  
Jiun-Yu Wen ◽  
Zong-Min Lyu
Keyword(s):  
Microwave Filter ◽  
Filter Synthesis

Fluid Transmission Lines—Distributed Parameter Models Part 2: Comparison of Models

1986 ◽  
Vol 200 (4) ◽  
pp. 229-236 ◽  
Author(s):  
J S Stecki ◽  
D C Davis
Keyword(s):  
Transmission Line ◽  
Analytical Solutions ◽  
Transmission Lines ◽  
Distributed Parameter ◽  
Frequency Responses ◽  
Theoretical Frequency ◽  
Transmission Line Models ◽  
Fluid Parameters

This paper presents a comparison of distributed parameter models of uniform, rigid fluid transmission lines. Analytical solutions to five fluid transmission line models of differing complexity are compared. The theoretical frequency responses of a fluid-filled transmission line are compared with experimentally determined data. Effects of fluid parameters on the accuracy of predicted responses are evaluated.

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