Fault diagnosis of Motorized Spindle based on S- Transform
Chao Chen, Xueyan Zhao · 2019 Boston, Massachusetts July 7- July 10, 2019 · 2019
Abstract. As one of key functional components, the status of high-speed motorized spindle directly influences the machining precision and performance of the CNC machine tool. The research on fault diagnosis of motorized spindle not only obtains the fault position and pattern, but also provides data for reliability design in order to improve the reliability of motorized spindle. S-Transform was applied in this paper for fault diagnosis of motorized spindle. The acceleration signal was processed by S-Transform to search the fault feature frequency and diagnose the fault pattern. And the fault data of rotor friction and misalignment on motorized spindle were analyzed by S-Transform. Compared with FFT, STFT and HHT, S-Transform had a better performance in fault diagnosing of motorized spindle.