Affiliation: | a School of Electromechanical Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, PR Chinab Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment, Hunan University of Science and Technology, Xiangtan 411201, Hunan, PR Chinac Engineering Research Center of Advanced Mining Equipment, Ministry of Education, Hunan University of Science and Technology, Xiangtan 411201, Hunan, PR China |