[1] Northeastern Univ, Dept Mech & Ind Engn, Boston, MA 02115 USA
[2] Zhejiang Univ, Dept Informat Sci & Elect Engn, Hangzhou 310027, Peoples R China
[3] Zhejiang Univ, Electromagnet Acad, Hangzhou 310027, Peoples R China
[4] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02115 USA
[5] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA