NDLI: Application of an improved discretisation method for the rotor-bearing assembly in the radiated noise analysis using Riccati transfer matrix method

Content Provider	IET Digital Library
Author	Feng, Chao Ma, Xiaochuan Hu, Zeyan Luo, Yong
Abstract	An improved discretisation method relative to the geometric dimensions of the rotor-bearing system in the calculation of its critical speeds using the transfer matrix method (TMM) is introduced to enhance the computation precision. This work is motivated by the noise analysis of the power system, wherein the noise source identification in a multiple source environment is challenging and hence the need for a higher degree of accuracy. This new discretisation method is derived according to the principles of the equivalence of mass properties with lumped mass and moment of inertia included. The efficiency of the proposed discretisation method is tested via both simulation studies and real noise data. The Riccati TMM is applied on the equivalent discrete models obtained from the proposed geometric dimension discretisation method (abbreviated to GDDM in this study) as well as the empirical discretisation formula, the comparison of which indicates that the analysis of the rotor-bearing assembly discretised appropriately enough under the GDDM is capable of providing solutions of critical speed and predictions of vibration modes and noise with better precision.
Starting Page	1245
Ending Page	1253
Page Count	9
ISSN	17518660
Volume Number	11
e-ISSN	17518679
Issue Number	Issue 7, Aug (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/11/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2017.0107
Journal	IET Electric Power Applications
Publisher Date	2017-08-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	A.C. Machine Algebra Assembling Combinatorial Mathematics D.C. Machines Geometry Improved Discretisation Method Linear Algebra Machine Bearings Matrix Algebra Mechanical Component Multiple Source Environment Noise Source Identification Numerical Analysis Radiated Noise Analysis Riccati Equation Riccati TMM Riccati Transfer Matrix Method Rotor-bearing Assembly Rotors TMM Transfer Matrix Method
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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