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Unlike traditional circuits relying on differential amplifiers, the AIDSSA circuit is constructed with only op-amps and uses negative feedback to reject the common-mode interferences from the control command. The new circuit requires simpler conditions of component matching and is able to sense the mechanical responses with a uniform gain and without a phase lag. The actuator is able to achieve full-stroke actuation while sensing is performed, because AIDSSA introduces no undesirable dynamics into the control loop. For the first time, the sensing and actuation transfer functions in self-sensing actuators have become fully decoupled at all frequencies. The investigation takes the form of an industrial application of hard disk drives, and demonstrates the usefulness the circuit in complex positioning systems. Experimental results show that the position error variance, a measure of disturbance rejection capability, has been improved by about 15% in the track-following mode relative to the same servo before modifications.<\/jats:p>","DOI":"10.1177\/0142331220938208","type":"journal-article","created":{"date-parts":[[2020,7,21]],"date-time":"2020-07-21T03:09:38Z","timestamp":1595300978000},"page":"802-811","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":4,"title":["Asymmetric indirect-driven self-sensing actuation and its application to piezoelectric systems"],"prefix":"10.1177","volume":"43","author":[{"given":"Bin","family":"Hu","sequence":"first","affiliation":[{"name":"Western Digital R&D Center, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8260-5879","authenticated-orcid":false,"given":"Chee Khiang","family":"Pang","sequence":"additional","affiliation":[{"name":"Engineering Cluster, Singapore Institute of Technology, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jie","family":"Wan","sequence":"additional","affiliation":[{"name":"Western Digital R&D Center, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shuyu","family":"Cao","sequence":"additional","affiliation":[{"name":"Engineering Cluster, Singapore Institute of Technology, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jern Khang","family":"Tan","sequence":"additional","affiliation":[{"name":"Western Digital (M) Sdn Bhd, Malaysia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hui","family":"Li","sequence":"additional","affiliation":[{"name":"Western Digital R&D Center, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jianyi","family":"Wang","sequence":"additional","affiliation":[{"name":"Western Digital R&D Center, Singapore"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guoxiao","family":"Guo","sequence":"additional","affiliation":[{"name":"Servo Track Writing Technology Group, Western Digital Corporation, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2020,7,21]]},"reference":[{"key":"bibr1-0142331220938208","doi-asserted-by":"publisher","DOI":"10.1109\/TMECH.2015.2509177"},{"key":"bibr2-0142331220938208","volume-title":"Hard Disk Drive: Mechatronics and Control","author":"Al Mamun A","year":"2014"},{"key":"bibr3-0142331220938208","doi-asserted-by":"publisher","DOI":"10.1177\/1045389X14522535"},{"key":"bibr4-0142331220938208","doi-asserted-by":"publisher","DOI":"10.1007\/s00542-012-1533-x"},{"key":"bibr5-0142331220938208","doi-asserted-by":"publisher","DOI":"10.1109\/TIE.2016.2542780"},{"key":"bibr6-0142331220938208","doi-asserted-by":"publisher","DOI":"10.1177\/1045389X9400500510"},{"key":"bibr7-0142331220938208","doi-asserted-by":"publisher","DOI":"10.1177\/1045389X9200300109"},{"key":"bibr8-0142331220938208","doi-asserted-by":"publisher","DOI":"10.1109\/TCST.2008.921798"},{"key":"bibr9-0142331220938208","doi-asserted-by":"publisher","DOI":"10.1177\/1045389X04046308"},{"key":"bibr10-0142331220938208","doi-asserted-by":"publisher","DOI":"10.1177\/1045389X9000100305"},{"key":"bibr11-0142331220938208","author":"Hanson RD","year":"2017","journal-title":"U.S. Patent 9728213"},{"key":"bibr12-0142331220938208","doi-asserted-by":"publisher","DOI":"10.1016\/j.isatra.2012.06.004"},{"key":"bibr13-0142331220938208","unstructured":"Hu B (2016) Advanced sensor fusion and vibration control technologies in ultra-high density hard disk drives. 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