Title :
All digital high performance controller for spindle motor in CNC machine tool
Author :
Kim, Dong-Il ; Yim, Chung Hyuk
Author_Institution :
FA Res. Inst., Samsung Electron., Suwon, South Korea
Abstract :
This paper presents the development of an all digital high performance controller for induction motors, which is used in the CNC machine tool. The authors apply the nonlinear controller and the PI controller to the spindle motor under vector control to obtain the desired performance. In the PWM converter control, they use a control scheme consisting of a feedforward controller, a PI controller, a load current observer and a PLL-type phase angle estimator of the three-phase source voltage. Experimental results show good performance of the proposed controller in controlling the spindle motor in CNC machine tools
Keywords :
computerised numerical control; control system synthesis; electric control equipment; feedforward; induction motors; machine control; machine testing; machine theory; machine tools; nonlinear control systems; observers; parameter estimation; two-term control; CNC machine tool; PI controller; PLL-type phase angle estimator; all-digital high-performance controller; control design; control performance; feedforward controller; induction motors; load current observer; nonlinear controller; spindle motor; three-phase source voltage; Computer numerical control; Digital control; Induction motors; Machine tools; Machine vector control; Performance gain; Phase estimation; Proportional control; Pulse width modulation converters; Voltage;
Conference_Titel :
Electric Machines and Drives Conference Record, 1997. IEEE International
Conference_Location :
Milwaukee, WI
Print_ISBN :
0-7803-3946-0
DOI :
10.1109/IEMDC.1997.604165
