Design and simulation for servo feeding system of NC leather cutting

YU Zhi-sheng， ZHAO Yan-wei
（Key Laboratory of E & M， Ministry of Education & Zhejiang Province， Zhejiang University of Technology，
Hangzhou 310014， China）

Abstract： In order to meet the urgent need for high speed and high efficiency of leather cutting machine，a servo feeding system of the NC multi-layer leather cutting was designed. Aiming at the problem of high speed cutting and dynamic response appeared in NC leather cutting，a mathematical model of the servo feeding system was built，and the rotational inertia of the driving mechanism was equivalent analyzed.A three-ring PID control strategy including current，speed and position of a servo system was proposed，the simulation block diagram of a servo control system was created based on simulation. The results indicate that the dynamic characteristics are more superior by using the three-ring PID control strategy. It has engineer practical value to improve the leather cutting speed and accuracy.
Key words： leather cutting； servo feeding； PID； control strategy； Simulink； simulation