MOTOR LOAD TORQUE CALCULATING AND MODELING FOR SPEED CONTROL SYSTEM OF THE 2030

TANDEM COLD ROLLING MILL

Wang Yiqun

(Mechanical Engineering Institute, Yanshan University, Qinhuangdao 066004)

Fang Yiming

(Electrical Engineering Institute, Yanshan University, Qinhuangdao 066004)

Sun Dengyue

(Mechanical Engineering Institute, Yanshan University, Qinhuangdao 066004)

Zhou Jiangang

(Automation Institute of Baosteel, Shanghai 201900)

Liu Xian

(Electrical Engineering Institute, Yanshan University, Qinhuangdao 066004)

Abstract: Based on knowing well the DC motor speed control systems for 2030 tandem cold rolling mill, modeling and simulation for a double armature motor speed control system is predigested to that for a single armature motor speed control system equivalently. The physical model of the DC motor speed control system with field weakening and speed self-adjusting is established for 2030 tandem cold rolling mill. The model structure and parameters of each tache of the speed control system are obtained through the detailed analysis and account. The on-line calculation formula of the motor load torque is given for the speed control system of the tandem cold rolling mill. The simulation and actual measured results combining the spot status data show that the established model for speed control system is accurate, and the on-line calculation formula of the motor load torque is feasible.

Key words: Tandem cold rolling mill   Speed control   Double armature motor  Modeling and simulation  Speed adjusting with field weakening

Motor load torque

CLC No: TP15

国家自然科学基金资助项目(60074022). Received 20040417, received in revised form 20041010