【摘要】 建立了轧机的数学模型,分析了轧机扭振的原因,指出轧制电流是决定轧机是否扭振的关键因素。针对安阳钢铁公司中厚板轧机存在扭振现象,通过对扭振的测量、分析,表明在咬钢时会发生扭振。提出了模型前馈控制抑制轧机扭振,模型前馈控制通过建立理想的电机模型,将电流给定观测出并补偿到系统中去,达到抑制轧机扭振的目的;研究表明轧件咬入时的冲击是造成扭振的主要原因,模型前馈控制是抑制轧机扭振的有效方法,在工程中容易实现,而且不受轧机振动频率的影响,可抑制各个频段的振动。更多还原

【Abstract】 The torsional vibration of rolling mill can damage the equipment and production.A mathematical model was built based on the analysis of vibration and it was found that the rolling current is the determining factor of vibration.At Anyang Iron and Steel Company according to field investigations,that the vibration of rolling mill occurs during biting.The simulation following control(SFC) was built with a precise motor model to calculate and compensate set current for eliminating vibration of main driver.The application shows that the SFC is effective for eliminating mill vibration at any frequency,and easy to implement.更多还原