Please use this identifier to cite or link to this item: https://scholarbank.nus.edu.sg/handle/10635/32695
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dc.titleDisturbance attenuation in a precision servomechanism by a frequency-separated acceleration soft sensor
dc.contributor.authorLUO, YAOLONG
dc.contributor.authorLEE, TONG HENG
dc.contributor.authorGE, SHUZHI
dc.date.accessioned2012-05-02T02:29:00Z
dc.date.available2012-05-02T02:29:00Z
dc.date.issued2005-04-05
dc.identifier.citationLUO, YAOLONG,LEE, TONG HENG,GE, SHUZHI (2005-04-05). Disturbance attenuation in a precision servomechanism by a frequency-separated acceleration soft sensor. ScholarBank@NUS Repository.
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/32695
dc.description.abstractIn servomechanisms, like for example used in disk drives, disturbances, for example, friction, shock and vibration, prevent the system positioning accuracy from further improvement. These disturbances occur in a relatively low-frequency range compared to the electrical dynamics. In the present invention, an acceleration feedback control loop using a frequency-separated acceleration soft sensor (350) replaces the conventionally used current control loop in the low frequency range, where the disturbances occur, so as to attenuate the influence of the disturbances enclosed in the loop. The current feedback continues to manage the electrical dynamics in the high-frequency range. Estimating the required acceleration signal by a soft sensor (350) eliminates the need for physical accelerometers, which reduce system reliability and increase system cost. The acceleration feedback control loop constructed with the obtained acceleration signal also makes the system more robust to the parameter inaccuracies and variations within the loop. This invention can be easily implemented with either software or hardware.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/http://analytics.patsnap.com/patent_view/view?pn=US6876168
dc.sourcePatSnap
dc.typePatent
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.identifier.isiutNOT_IN_WOS
dc.description.patentnoUS6876168
dc.description.patenttypeGranted Patent
dc.contributor.patentassigneeNATIONAL UNIVERSITY OF SINGAPORE
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