Title :
Flying shear control system
Author :
Peric, Nedjeljko ; Petrovic, Ivan
Author_Institution :
Rade Koncar Inst. of Electr. Eng., Zagreb, Yugoslavia
Abstract :
A flying shear control system based on optimal position control with a moving target is described. Positioning is optimal in the sense of producing minimal driving torque. The position control algorithms, with appropriately selected speed parameters and armature current controllers and with a corresponding correction signal added to the blade velocity reference ensure high cutting accuracy in both discontinuous and continuous modes of operation. The algorithms also allow automatic transition from one mode to the other, thereby permitting online scrap minimization by computing the optimal combination of different custom length sections. Theoretical considerations are supported by digital simulation and experimental results. Oscillograms are presented to verify the validity of the concept. The implemented flying shear control system proved highly effective in operation.<>
Keywords :
electric current control; machining; manufacturing computer control; microcomputer applications; optimal control; position control; algorithms; armature current controllers; blade velocity reference; correction signal; cutting; digital simulation; flying shear control system; machining; minimal driving torque; online scrap minimization; optimal position control; process control; Armature; Automatic control; Blades; Control systems; Digital simulation; Minimization methods; Optimal control; Position control; Torque; Velocity control;
Conference_Titel :
Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/IAS.1989.96830
