A new sampled-data drive for CNC machine tools

Yaw Shih Shieh*, An-Chen Lee

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Scopus citations


A mathematical analysis of a sampled-data servo-drive system controlled by the step control algorithm for computer numerical control (CNC) is presented. The step control algorithm provides for rapid and precise positioning and is ready for practical implementation. Its performance, including stability, damping ratio, maximum overshooting, steady-state error for both the step and ramp input, and bandwidth for accurate circular motion, is studied and depicted in design charts. The design procedure proceeds by using the design charts to choose the weighting factor and the sampling period to satisfy the specifications of the system. The effectiveness of the proposed control algorithm is demonstrated by simulation and experiment.

Original languageEnglish
Pages (from-to)885-902
Number of pages18
JournalInternational Journal of Machine Tools and Manufacture
Issue number6
StatePublished - 1 Jan 1995

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