YAOW-MING CHENChou, M.-W.M.-W.ChouWu, H.-C.H.-C.Wu2018-09-102018-09-102007http://www.scopus.com/inward/record.url?eid=2-s2.0-49949111794&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/332298Sigma-delta modulation inverters for piezoelectric actuatorsconference paper10.1109/IECON.2007.4460346