Analysis of Acoustical Properties of a Gear Mechanism

1997 ◽  
Author(s):  
Evgueni I. Podzharov
Keyword(s):  
Noise Level ◽  
Wide Frequency Range ◽  
High Mode ◽  
Frequency Range ◽  
Dynamic Calculation ◽  
Acoustical Properties ◽  
Gear Mechanism ◽  
Surrounding Space ◽  
Gear Meshes ◽  
Acoustical Energy

Abstract For an analysis of the acoustical properties of a multistage gear mechanism, a technique was used that combines a dynamic calculation of the mechanism as multimass multicoupling system and the SEA method for the calculation of acoustical energy. The dynamic calculation was used to determine the energy introduced into the mechanism’s gear meshes and the energy transmitted to the housing. The SEA method was used for the calculation of propagation of acoustical energy in the structure and its radiation in the surrounding space. Such a combination permits us to utilize the advantage of dynamic calculation accurately describing the mechanism’s performance and the SEA method for describing an acoustical model having the elements of high mode density in a wide frequency range. Some useful results were obtained which permit us to reduce noise level of the mechanism.

Installation for testing electronic voltmeters over a wide frequency range

1976 ◽  
Vol 19 (10) ◽  
pp. 1525-1526
Author(s):  
A. M. Fedorov ◽  
V. V. Krestovskii ◽  
V. S. Kiselev ◽  
S. A. Razumovskii ◽  
V. A. Shcheglov
Keyword(s):  
Wide Frequency Range ◽  
Frequency Range

Analysis of Dielectric Spectra of Water with Conductive Impurities in a Wide Frequency Range

2018 ◽  
Vol 60 (11) ◽  
pp. 1893-1900 ◽  
Author(s):  
V. A. Zhuravlev ◽  
V. I. Suslyaev ◽  
A. V. Zhuravlev ◽  
E. Yu. Korovin
Keyword(s):  
Wide Frequency Range ◽  
Frequency Range ◽  
Dielectric Spectra

Methods for improving the accuracy of frequency shift estimation in 5G NR

2021 ◽  
Author(s):  
Vladimir Sergeevich Milyutin ◽  
Eugeniy Vasilevich Rogozhnikov ◽  
Kirill Petrovskiy ◽  
Dmitriy Pokamestov ◽  
Edgar Dmitriyev ◽  
...  
Keyword(s):  
Frequency Shift ◽  
High Frequency ◽  
Communication Systems ◽  
Wide Frequency Range ◽  
Wireless Communication Systems ◽  
Frequency Synchronization ◽  
Frequency Range ◽  
Transmission Rates ◽  
Synchronization Accuracy ◽  
High Order Modulation

Abstract Frequency synchronization is a necessary operation for all wireless communication systems. Due to the wide frequency range defined for 5G NR systems, this procedure becomes critical. To ensure high transmission rates and the use of high-order modulation, up to 256 QAM for 5G communication systems, it is necessary to ensure high frequency synchronization accuracy. In this article, we have reviewed various approaches to implementing frequency synchronization and proposed, in our opinion, the most effective method for correcting the frequency shift of the signal.

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