Title :
Control design and experimental results of sensor based direct process control for bar turning
Author :
Fan, Chun ; Collins, Emmanuel G., Jr. ; Liu, Charlie ; Wang, Ben
Author_Institution :
Dept. of Mech. Eng., Florida State Univ., FL, USA
Abstract :
Describes an in-process measurement and control system called radial error feedback geometric adaptive control (REFGAC) system for bar turning in CNC turning centers. The REFGAC system was design to compensate for the radial error caused by deflection under cutting force. To compensate for the radial error, Kalman filters for prediction together with PID control laws were designed, based on models of the deflection of the bar. Experimental results showed that the dimensional and geometric accuracy of the workpiece is substantially improved by this radial error feedback geometric adaptive control technique
Keywords :
Kalman filters; adaptive control; computerised numerical control; control system synthesis; cutting; finite element analysis; machining; prediction theory; process control; three-term control; CNC turning centers; Kalman filters; PID control; bar turning; control design; dimensional accuracy; error feedback geometric adaptive control system; geometric accuracy; in-process measurement and control system; sensor based direct process control; Adaptive control; Computer numerical control; Control design; Control systems; Error correction; Feedback; Force sensors; Predictive models; Three-term control; Turning;
Conference_Titel :
Decision and Control, 2001. Proceedings of the 40th IEEE Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-7061-9
DOI :
10.1109/.2001.980815
