Title :
An Integrated Contour Error Real-time Self-control Method
Author_Institution :
Inst. of Inf. Sci. & Eng., Central South Univ., Changsha, China
Abstract :
For contour machining systems, the machining contour accuracy more directly affects the machining accuracy of work piece than the single-axis location accuracy. Therefore, the research on motion contour control of manufacturing equipments has an important significance to improve their machining accuracy. Considering the embedded NC real-time contour control requirements, the contour self-control scheme based on real-time contour error compensation control technique and fuzzy logic theory is proposed. In the control method, a feed rate adjusted loop based on fuzzy logic is added. And it could improve the variable window size problem in the real time contour error compensation control technique. Simulation results on the second-order mathematical model of two-axis controlled contour motion are provided to illustrate the proposed control methods.
Keywords :
computerised numerical control; control engineering computing; error compensation; fuzzy control; machine tools; machining; motion control; CNC machine tools; contour machining systems; embedded NC real-time contour control requirements; feed rate adjusted loop; fuzzy logic theory; integrated contour error real-time selfcontrol method; machining contour accuracy; manufacturing equipments; motion contour control; real-time contour error compensation control technique; second-order mathematical model; single-axis location accuracy; two-axis controlled contour motion; variable window size problem; work piece machining accuracy; Computer numerical control; Error compensation; Error correction; Feeds; Fuzzy logic; Machining; Real time systems; contour error; fuzzy logic; numerical control equipment; self-control;
Conference_Titel :
Intelligent Human-Machine Systems and Cybernetics (IHMSC), 2012 4th International Conference on
Conference_Location :
Nanchang, Jiangxi
Print_ISBN :
978-1-4673-1902-7
DOI :
10.1109/IHMSC.2012.112