基于WINCC的广义预测控制在切断机中的应用

摘要

针对聚氨酯保温板自动化生产线中切断机定长切割精度不足的问题,讨论了一种单值广义预测控制算法,用于替代传统的PID控制,并给出了该算法在上位机监控软件WINCC的C脚本中的实现过程.另一方面对切断机进行了系统建模,并基于系统模型进行了算法的仿真实验.实验结果表明,与PID控制算法相比,预测控制算法的响应速度更快,超调更小,鲁棒性更好,大大提高了切断机的切割精度.%In order to improve the precision of cutting machine in the automatic production line of polyurethane insulation board,a single value generalized predictive control algorithm is proposed to replace the traditional PID control in this paper,and de-scribes how to use WINCC script to implement the algorithm.As the same time,the simulation experiment based on the system mod-el is carried out,and the experimental results show that the predictive control algorithm has faster response,less overshoot and bet-ter robustness than the PID control algorithm,it improves the cutting precision of the cutting machine greatly.