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Chanon Lekthamrong,Apinai Rerkratn,Wandee Petchmaneelumka,Vanchai Riewruja 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In this paper, a circuit technique to realize Max/Min finder for fuzzy applications is presented. The maximum or minimum operation can be provided by setting the external control current without changing the topology, while the input signals are in the voltage forms. The proposed Max/Min finder configuration is simple and suitable for fabrication in standard CMOS technology. The circuit performance is studied using PSPICE analog simulation program. Simulation results verifying the performance of the proposed scheme are agreed with the expected values.
High Efficiency Postprocessor for Generic NC Machine
Thepjit Cheypoca,Chanon Lekthamrong,Chitpol Koomgaew,Virot wuti,Vanchai Riewruja 제어로봇시스템학회 2010 제어로봇시스템학회 국제학술대회 논문집 Vol.2010 No.10
Postprocessor for generic numerical control (NC) machines is introduced in this article. The proposed postprocessor can convert the cutter location data from general CAD/CAM system or the path data from halftone bitmap picture to NC machine control command in the form of standard G-code. The purpose of this work is proposed a high efficiency postprocessor that can be generated linear and helical interpolation in G-code machine command without requiring CAD/CAM system facility. The input data of the postprocessor can also be directly acquired from x-y coordinates of workpiece. The proposed postprocessor is developed using visual C# programming language under window XP environment. G-code generated from the proposed postprocessor using the cutter location data of sample bitmap picture is used for experimental demonstration with generic NC machine. As the result, the proposed postprocessor exhibits a benefit for simple NC machine tool.