| 摘要 |
<p>PURPOSE:To freely determine a feedback quantity according to the condition required in PID control of winding temp. control. CONSTITUTION:The respective membership functions of P, I, D are determined with a coiling temp. control equipment which controls the coiling temp. of a hot rolled steel strip by subjecting coiling means 5, 6 for cooling a hot rolled steel strip obtd. by finish rolling to PID control in accordance with the feedback quantity. The respective gains of the P, I, D are determined in accordance with such membership functions and the second membership functions are determined by the feedback quantity defined for each of the respective combinations of the P, I, D components. Processing to determine the optimum feedback quantity in this condition is executed by a valve-on number determining section 14 with a weight average method on the basis of these second membership functions.</p> |
