Manuscript received October 25, 2017; revised December 6, 2017; accepted December 28, 2017. Date of publication January 31, 2018; date of current version June 10, 2019. This work was supported in part by the Natural Science Foundation of China under Grant 51575412, Grant 51575338, and Grant 51575407, in part by the Fundamental Research Funds for the Central Universities under Grant 2016-JL-011, in part by the State Key Lab of Digital Manufacturing Equipment and Technology of China under Grant DMETKF2017003, and in part by the EU Seventh Framework Programme (FP7)-ICT under Grant 611391. (Corresponding author: Zhaojie Ju.) Y. Xue is with the School of Automation, Wuhan University of Technology, Wuhan 430070, China, and also with the School of Electrical and Mechanical Engineering, Pingdingshan University, Pingdingshan 467000, China (e-mail: yaxu.xue@whut.edu.cn).
