平整速度是影响延伸率控制精度的关键因素。
Speed of skin-pass mill is an important factor to affect precision of elongation control.
在平整机延伸率控制系统中，常用的测量装置是脉冲发生器和激光测速仪。
In the control system for skin pass mill elongation, the measuring devices in common use are pulse generator and laser velocimeter, of which the control accuracy of the laser velocimeter is higher.
本文结合预测函数控制(pfc)理论，针对平整机控制系统的特点，设计了PFC—PID串级延伸率控制系统。
According to theories of predictive functional control (PFC) and the characters of cold rolling temper mill, PFC-PID cascade elongation control system is designed.
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