Methods and apparatuses for defect diagnosis in a mechanical system

US10520397B2 · kind B2 · utility

Assignees

• UNIVERSITY OF CONNECTICUT · US
• Canrig Drilling Technology Ltd. · US

Inventors

• Robert X. Gao · Amherst, US
• Jinjiang Wang · Fujian, CN
• Ruqiang Yan · Amherst, US
• Brian Ellis · Spring, US
• Boone Elbert Smith · Pinehurst, US
• Jose Abelardo Sanchez Puente · Richmond, US

Key dates

• Filing date: May 31, 2012
• Grant date: Dec 31, 2019
• Expiry date: Nov 27, 2034

Classification

• Technology area (CPC G): Physics
• CPC primary: G01M99/008
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Multiple methods and corresponding apparatuses for efficient and reliable defect diagnosis in components of mechanical systems, are described. According to one aspect, multi-scale enveloping-order spectrogram is used to diagnose, or detect, defects in a moving component of a mechanical system. According to another aspect, defect identification and diagnosis in a motor is performed based on spectral characteristics of motor current envelope. According to yet another aspect, a logic rule model, employing classification of features associated with single- or multi-sensor data, is employed for diagnosis of defects in components of mechanical systems.