摘要
针对某四辊冷轧机,建立了其二自由度机架-辊系动力学模型,并进一步建立其电液IGC(Ingap Gauge Control)闭环控制系统模型。考虑此电液IGC模型的参数不确定性,利用H∞混合灵敏度简化算法设计了辊缝闭环控制器。仿真研究结果及与常规PID控制效果的比较表明,所设计的控制器对于电液伺服系统的参数不确定性具有很好的抑制性能,提高了电液IGC系统的动态性能和稳定性。
The two degrees stand-roll system model of four-high mill was built, the electro-hydraulic IGC servo system was further built. The closed loop controller of roll gap was designed with the H∞ mixed sensitivity robust control theory based on simplified algorithm because of the parameter uncertainty of the IGC model, Simulation results and comparison with the effect of PID control show that the robust controller designed has better disturbance attenuation performance for parameter uncertainty and external disturbance. The dynamics performances and stability of the electro-hydraulic IGC system were improved significantly.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2007年第23期5451-5454,5600,共5页
Journal of System Simulation
