Load variation compensation in real-time for motion accuracy of machine tools

Research output: Contribution to conferencePaper

4 Scopus citations

Abstract

Although nanometric precision is nowadays possible for positioning tasks, it still not available for machining processes under cutting conditions because periodical forces produced by the cutting process on the work-table are neglected. This work proposes an approach to improve accuracy of conventional machine tools under cutting conditions for both positioning tasks and trajectory tracking tasks. A three axis-milling machine is used as experimental platform. A reduced second order linear model of a typical machine tool axis is considered. The main assumption is that cutting forces can be seen as load variations at the worktable level, these load variations are then considered as dynamic variations of the plant parameters. Using DSP and Pentium processors, a very fast identification process is able to estimate these variations in real-time, at the same rate as the servo-cycle.
Original languageAmerican English
Pages305-309
Number of pages274
StatePublished - 1 Dec 1998
Externally publishedYes
EventInternational Workshop on Advanced Motion Control, AMC -
Duration: 1 Dec 1998 → …

Conference

ConferenceInternational Workshop on Advanced Motion Control, AMC
Period1/12/98 → …

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  • Cite this

    Castillo-Castaneda, E., & Okazaki, Y. (1998). Load variation compensation in real-time for motion accuracy of machine tools. 305-309. Paper presented at International Workshop on Advanced Motion Control, AMC, .