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This study proposes a field programmable gate array(FPBA)-based motion controller with real-time look-ahead function for computer numerical control(CNC) machines to achieve the purpose of high-speed and high-accuracy motion control. The proposed motion controller under PC-FPGA architecture uses a two-stage interpolation scheme to reduce the computational burden of non-uniform rational B-spline(NURBS)...
In general, there are two types of acceleration/deceleration (Acc/Dec) motion planning architectures: Acc/Dec before interpolation (ADBI) and Acc/Dec after interpolation (ADAI). The ADBI approach will not generate command errors and the look-ahead function can be easily implemented. The ADAI approach can generate smooth velocity profiles even at sharp corners. In this paper, a novel Acc/Dec hybrid...
This paper proposes a novel integrated look-ahead dynamic (ILD) interpolation algorithm which integrates a look-ahead methodology with servo dynamic error equations. The look-ahead utilizes the curvature and centripetal acceleration information to detect the points of sharp corners. According to the information of sharp corner, the non-uniform rational B-spline (NURBS) curve is divided into small...
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