Mechanical Vibration Source Number Estimation Based on Hidden Markov Models
Xiao Yao-xian · Mechanical Engineer · 2013
To estimate the number of mechanical vibration sources from non-stationary and time-varying signals,a new method based on hidden markov models(HMM) is proposed.The method combined hidden Markov models with automatic relevance determination to determine the number of sources through comparing the reliability of different models.The experimental results show that the method can effectively estimate the number of non-stationary and timevarying signal sources,and this work is helpful to analyze the mechanical vibrations in fault monitoring system.