A novel accelerometer based feedback concept for improving machine dynamic performance

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dc.contributor.authorAbir, Jonathan
dc.contributor.authorMorantz, Paul
dc.contributor.authorLongo, Stefano
dc.contributor.authorShore, Paul
dc.date.accessioned2016-12-09T11:03:10Z
dc.date.available2016-12-09T11:03:10Z
dc.date.issued2016-11-10
dc.description.abstractSmall size ultra-precision Computer Numerical Control (CNC) machines require high dynamic performance. Flexible frame phenomena can limit the machine dynamic performance, particularly in small size machines. A novel accelerometer based feedback concept for improving machine dynamic performance was developed and realised, a virtual metrology frame. It expends the limited techniques for improving dynamic performance of a small size machine by measuring the flexible frame displacement, and feeding it into the controller. The concept was implemented in a simplified linear motion system, and showed a 12dB reduction in the magnitude of the first resonance in the plant frequency response function. This allowed improving the servo bandwidth by 58% based on a PID controller. A new technique for real-time dynamic displacement measurements using accelerometer was developed. It shows a low sensor noise σ<30 nm; thus, accelerometers are used as a displacement sensor in a control system.en_UK
dc.identifier.citationAbir J, Morantz P, Longo S, Shore P, A novel accelerometer based feedback concept for improving machine dynamic performance. IFAC-Papers Online, Volume 49, Issue 21, 2016, Pages 553–558en_UK
dc.identifier.issn2405-8963
dc.identifier.urihttp://dx.doi.org/10.1016/j.ifacol.2016.10.660
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/11128
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAccelerometersen_UK
dc.subjectCNCen_UK
dc.subjectdigital filteren_UK
dc.subjectflexible frameen_UK
dc.subjectnoiseen_UK
dc.subjectultra-precisionen_UK
dc.subjectvirtual metrology frameen_UK
dc.titleA novel accelerometer based feedback concept for improving machine dynamic performanceen_UK
dc.typeArticleen_UK

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