Design of Pythagorean Hodograph Curve Interpolator Based on NiosII Embedded Processor and FPGA
In this paper, a novel architecture of Pythagorean Hodograph (PH) curve interpolator based on Nios Ⅱ embedded processor and FPGA is proposed. The whole interpolator including NiosⅡ processor is built in a single FPGA chip. The interpolator uses a two-stage interpolation scheme to reduce the computational burden of PH curve interpolator. The Nios Ⅱ embedded processor implements 1st-stage interpolation, the FPGA receives the command from the Nios Ⅱ processor and implements 2nd-stage interpolation simultaneously. Therefore, the interpolator can implement the real-time PH curve interpolation algorithm steadily to meet the needs of high-speed and high-precision machining.
J. J. Guo and W. Tang, "Design of Pythagorean Hodograph Curve Interpolator Based on NiosII Embedded Processor and FPGA", Advanced Materials Research, Vols. 383-390, pp. 6868-6872, 2012