皮革数控裁剪机伺服进给系统的设计与仿真

Design and simulation for servo feeding system of NC leather cutting

为了满足皮革裁剪机自动化高速裁剪的需求,设计了皮革裁剪机伺服进给系统。针对皮革数控裁剪时所存在高速切割和动态响应性问题,对伺服进给系统进行了数学建模,同时对其机械传动机构进行了转动惯量等效分析;在此基础上提出了电流、速度和位置的三环PID控制策略,建立了伺服进给控制系统Simulink仿真模型。研究结果表明,采用了三环PID控制方法后的皮革裁剪机伺服进给系统获得了更加优良的动态特性,对进一步提高高速皮革裁剪机的裁剪速度和精度具有较好的工程实用价值。

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.