The Research of Temperature Control on Steel Hot Rolling during Finishing Milling Process

• Main Authors: Chang Hwan Chu, 朱倉環
• Other Authors: Chang-Huei Wu
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/37237837177773097194

碩士 === 元智大學 === 機械工程研究所 === 87 === This research derives to tune/design the PID controller to meet user-specified gain margin and phase margin for first-order plants with time lag. First, the effects of PI, PID controller on rise time, overshoot,setting time, and gain margin, phase margin for CSC water curtain are analyzed. Then, research and discuss the improve space of these controllers''tuning methods. A improved formulae "Ziegler-Nichols_Chu PID" is derived from controller''s damp. Again, reference the designed concepts of Ho-Hang-Cao PI and Ho-Hang-Zhou PID, a new improved formulae "Ho-Hang-Zhou_Chu PID" is derived. Similarly, the effects of these tuning methods on time response and frequency response are analyzed.Finially, discuss all tuning methods'' robustness, when plant has 25% error.In practical application results, it is found that "Ho-Hang-Zhou_Chu PID" is really a adaptive and selt-tuning PID controller.