Application of order tracking analysis based on cRIO in wind power

ZHANG Chengpeng， FENG Kun， JIANG Zhinong
（Diagnosis and SelfRecovery Engineering Research Center， Beijing University of
 Chemical Technology， Beijing 100029，China）

Abstract： Aiming at the characteristic of the nonstationary vibration signal from gearboxes of wind power generators， an analysis method on fault diagnosis of gears with pitting corrosion was explored by the combination of order tracking analysis and envelope extraction Firstly， vibration signal on gearboxes was acquired with Compact RIO(CRIO) Then the signal was processed by  means of envelope extraction and the processed signal was converted to evenangle signal Order tracking analysis for evenangle signal was achieved in the next step According to the comparison with frequency characteristics of  normal gears， that on gears with pitting corrosion can be found The results indicate that fuzzy frequency can be solved by order tracking analysis in simulation, and fault frequency characteristics can be analyzed effectively in the experiment about gears with pitting corrosion Therefore， order tracking analysis has a broad application prospect in the fault diagnosis of gearboxes of the wind power generators
Key words： wind power generators; fault diagnosis of gearboxes; computed order tracking(COT); fault diagnosis; Compact RIO(CRIO)