Simulation and control of electrode position controllers for electric arc furnaces

✍ Scribed by H. Nicholson; R. Roebuck

• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 1003 KB
• Volume: 8
• Category: Article
• ISSN: 0005-1098
• DOI: 10.1016/0005-1098(72)90079-9

✦ Synopsis

Simulation et Contr61e de R6gulateurs de Position D'61ectrode pour des Fours ~ arc Electrique Simulation und Regelung der Lage der Elektroden-Regler bei LichtbSgenSfen Mo~em, lpoBaHx,xe 1, 1 ynpa~ierme perystaTopaMrx no~ozceHn~ 3JIerTpO~OB ~ ~yroBbIX neqe~ H. NICHOLSONI" and R. ROEBUCK+ + Comparative studies of the main types of electrode position servomechanisms, used for power input control in arc furnaces, indicate that improved dynamic performance may be obtained with four-term control or linear optimal control.

Summary--A comparative study is made of the dynamic performance of the main types of electrode position controllers used with industrial arc furnaces, consisting essentially of direct actuators employing hydraulic servosystems and indirect actuators operating a winch system. The overall system models include single-and three-phase power system representations and are used for the design of existing conventional analogue controllers to give improved short-term dynamic performance. Direct digital control of the electrode position servomechanism, incorporating conventional four mode algorithms and also suboptimal control based on a reduced-order linear model for controlling a non-linear plant model, is investigated. The study illustrates that improved long-and short-term dynamic performance of electrode position can be obtained by improved control system design.