摘要
结合某2 500 mm中厚板精轧厚度控制系统设计项目,根据实际设备条件,确定合理的轧机液压伺服控制系统模型。考虑执行机构的性能与轧机系统整体稳定性的折衷问题,在PID控制器基础上,设计液压伺服定量反馈QFT控制器。综合分析执行机构的不确定性范围和系统性能指标的要求,实现了轧机液压伺服系统鲁棒控制器的设计。对比仿真结果表明:QFT调整方案能够有效保证系统的稳定性,同时具有较好的控制性能。
A hydraulic automatic gauge control （HAGC） computer control system for 2 500 mm plate mill was eatablished. According to the characteristics of the actual plate mill, a reasonable mill hydraulic servo control system model was designed. Considering the overall system performance and stability trade-off problems, a PID controller based on quantitative feedback theory （QF＇r） tunig for hydraulic servo system was proposed. With comprehensive analysis of the uncertainties and the requirements of system performance, a robust controller for the rolling mill hydraulic servo system was achieved. Simulation results show that, controller with QFI＂ tuning can effectivelv zuarantee the stabilitv of the svste, m and has a hotter control performance.
出处
《机床与液压》
北大核心
2012年第5期59-63,共5页
Machine Tool & Hydraulics
基金
北京市教委重点学科控制理论与控制工程(XK100080537)
关键词
定量反馈理论
液压厚度控制
中厚板轧制
回路成型
Quantitative feedback theory
Hydraulic automatic gauge control
Plate rolling
Loop shaping
