Title :
Load Torque Observer for Cutting Motor of Roadheader Based on PLL
Author :
Xuelei, Zhao ; He, Liu ; Weitao, Li
Author_Institution :
Sch. of Mech. Electron. & Inf. Eng., China Univ. of Min. & Tech (Beijing), Beijing, China
Abstract :
When the road header is working, because of different characteristics of coal and rock, in order to protect the cutting head, the speed of cutting head should be adjusted according to the load torque. In this paper, a method based on PLL for observing the load torque of cutting motor was proposed, and its simulation and experimental were studied. The method is simpler and more accurate compared to traditional method that calculates the load torque just base on the amplitude of cutting motor current.
Keywords :
machine control; mining equipment; observers; phase locked loops; squirrel cage motors; torque control; PLL; cutting head; cutting motor; load torque observer; phase locked loops; roadheader; squirrel cage asynchronous motors; Harmonic analysis; Observers; Phase locked loops; Power harmonic filters; Synchronous motors; Torque; Torque measurement; Cutting motor; Load torque observer; PLL;
Conference_Titel :
Measuring Technology and Mechatronics Automation (ICMTMA), 2011 Third International Conference on
Conference_Location :
Shangshai
Print_ISBN :
978-1-4244-9010-3
DOI :
10.1109/ICMTMA.2011.406
