A generalized precision measuring mechanism and efficient signal processing algorithm for the eccentricity of rotary parts

Abstract

Rotary parts are crucial to transmission equipment. Measuring and analyzing the eccentricity of rotary parts enables the monitoring of vibrations in machinery, ensures smooth operation, and reduces equipment maintenance costs. The accurate measurement and modification of eccentricity are the premise to ensure rotary parts’ quality, however, existing measurement methods are computationally inefficient, complex, and expensive to implement, and limited in scope. In this paper, a novel and generalized precision measurement method is proposed to accurately and efficiently evaluate rotary parts’ eccentricity parameters, including attitude angle, eccentricity, and eccentric angle. This precision measurement method includes a lever measuring mechanism with a spherical probe and a corresponding efficient signal processing algorithm. The measuring mechanism has a simple structure and can effectively measure arbitrary cross-sections, and its design and optimization principles are investigated and presented thoroughly. The signal processing algorithm can efficiently extract eccentricity parameters of measured cross-sections. This proposed method has proven to overcome the limitations of literacy methods and exhibits generality and anti-interference. Simulation calculation and experimental verification are used to evaluate the effectiveness, computation efficiency, applicability, and repeatability. The proposed method exhibits tremendous potential in a diverse range of applications, such as detecting eccentricity and correcting errors for mechanical measurements, aerospace, equipment manufacturing, and other related fields.