Development of Monitoring and Diagnosis System for Linear Motion Unit
In the present work, investigations by high frequency resonance technique for diagnosis of defect frequencies of linear motion unit are reported. Raw vibration signature of the moving parts at different speeds of operation has been demodulated. Envelope detected spectrum is analyzed to evaluate various defect frequencies and their energy levels. Experimentally evaluated frequencies are compared with theoretically determined defect frequencies. These frequency values and their energy levels are used to monitor intrinsic condition of linear motion unit as well as to establish severity of existing/developed defects on the LM guide and inside the LM block. Relative comparisons of linear motion units of the same type are made at various operating speeds under identical conditions of operation on the basis of identified defect frequencies and severity of defects.
Zhengyi Jiang, Xianghua Liu, Sihai Jiao and Jingtao Han
H. Jian et al., "Development of Monitoring and Diagnosis System for Linear Motion Unit", Advanced Materials Research, Vols. 655-657, pp. 744-748, 2013