A New Optical Design of Worm Precision Detection Based on FPGA

ABSTRACT

This paper proposes a design of detecting system on new optical worm drive precision based on Field Programmable Gate Array(FPGA). By taking Verilog HDL as hardware description language to design, this platform adopts FPGA to process grating scale fastened on the check-waiting worm pair at the gauge chassis and the optical angle encoding signal synchronously. Subdivision technology is used to improve resolution of measuring grating and precision and scalable MC8051 IP core is embedded to control reading signal preprocessing data. By serial communication, the coordinate size and error precision are both displayed and analyzed on the virtual apparatus Labview software as well as data statistics information during driving process. The experimental results verify that the designed optical worm precision detecting system could meet the requirements of precision and ensure the products’ machining quality.

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