Design of Speed Disturbance Compensation Controller in the Secondary Cooling Zones for Billet
Combined with the established three-dimensional dynamic solidification heat transfer model, a feedforward controller under speed disturbance was designed for compensating secondary water. In order to improve the control quality of the surface temperature for billet, based on the determination of the transfer function matrix structures of the control channel and the disturbance channel, the heat transfer coefficient and the step changes of cast speed were employed as input activation, the surface temperatures of the casting billet were implied as the output response, and the step response curves and least square method were used to identify the transfer function. The simulation results shows that, the gain of the frequency response curves of the transfer function and the variation between the billet surface temperature and the target temperature are both reduced, and the quality of control is improved.
speed disturbance compensation controller transfer function identification billet
ZU Ling-yu MENG Hong-ji XIE Zhi
School of Information Science and Engineering Northeastern University Shenyang,China
国际会议
上海
英文
930-934
2009-11-20（万方平台首次上网日期，不代表论文的发表时间）