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

Volume

5

fYear

2001

fDate

2001

Firstpage

4075

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Decision and Control, 2001. Proceedings of the 40th IEEE Conference on

Conference_Location

Orlando, FL

Print_ISBN

0-7803-7061-9

Type

conf

DOI

10.1109/.2001.980815

Filename

980815