Comparative analysis of digital data conversion algorithms in NC systems of machine tools

Abstract

The research is aimed at studying the selection of instruments to encode, convert and compress digital data for various purposes. Hardware and software approaches to data conversion are considered. Two approaches are distinguished and described among many hardware realizations as most suitable for control systems - matrix-based and pulse-counting methods and corresponding circuits, with their advantages and disadvantages highlighted. Software-based algorithmic solutions are recommended as providing more flexible, reliable, compact and fast-response functioning in many aspects. Computational and table-based software algorithms for NC systems of machine tools (lathes and mills) are analysed and compared using a computer program developed for that purpose. The analysis is aimed at checking whether the differences between the algorithms are significant and finding an algorithm which would provide a higher operation speed in control systems of lathes and mills. The computational algorithm is concluded to be more suitable for NC systems of those machine tools, but it is stressed that the table-based method is more appropriate for certain purposes and applications. © 2021 Author(s).