摘要
步进式加热炉的步进梁在炉内加热过程中的运动速度既要保证生产节奏,又要实现钢坯的轻托轻放。由于运动部分的惯性太大,加上负载的阶跃式突变,实现速度和位移的精准控制难度很大。为了实时准确地获取钢坯的重量信息并实现前馈补偿控制,提出在移动梁上升过程中,从系统的速度与增益自适应模型的输出偏差中提取负载扰动信息并实现前馈补偿控制的方法,解决了负载阶跃变化导致的速度跌落问题,大幅改善了移动梁上升过程的动态性能,提高了速度控制的准确性。
Walking beam's speed in the furnace should ensure production rhythm and the transport of steel billet gently and safely. The large inertial motion of the moving parts and step-type mutation load make precise control of both velocity and displacement very difficult. In order to accurately obtain the billet's weight information,achieve feedforward compensation control,a method that in the process of moving beam's rise,extracting the information of load disturbance from the output deviation of the system's speed and the gain adaptive model to achieve feedforward compensation control was proposed to solve the fall of the speed incurred by changes in the load step,and greatly improve dynamic performance of the moving beam's rise process as well as improve the precision of speed control.
出处
《化工自动化及仪表》
CAS
2016年第12期1257-1261,共5页
Control and Instruments in Chemical Industry
基金
国家自然科学基金项目--分布参数切换系统控制理论及其应用研究(60974022)
合肥工业大学企业委托项目--山东临沂步进式加热炉工程项目自动控制系统(105-432683/11-037)
关键词
速度控制
步进梁
模型增益自适应
负载扰动
前馈补偿控制
speed control
walking beam
model gain adaptive
load disturbance
feedforward compensation control
