Title :
Simulation and Experiment of Sensorless Direct Torque Control of Hybrid Stepping Motor Based on DSP
Author :
Lin, Weijie ; Zheng, Zhuo
Author_Institution :
Sch. of Autom., Hangzhou Dianzi Univ.
Abstract :
In this paper, direct torque control (DTC) of hybrid stepping motor was investigated. Because of the structural characteristics, stepping motor is usually used for open-looped control. But, only the average torque of stepping motor is controlled by traditional control strategy, which causes intense ripple of torque and speed. Therefore, the torque must be controlled instantaneously to improve the performance of stepping motor. At first, open-looped control of stepping motor is analyzed. In order to get excellent performance, the curves of acceleration and deceleration of stepping motor must be calculated beforehand. Secondly, DTC of AC motor is introduced into the control of hybrid stepping motor. The effects of stator voltage space vectors on stator flux linkage and torque are also analyzed in details. Finally, a sensorless direct torque control system of hybrid stepping motor based on DSP-TMS320F240 is built up. The simulations and experiments validated the feasibility of the proposed system
Keywords :
AC motors; digital signal processing chips; machine control; open loop systems; stators; stepping motors; torque control; AC motor; DSP-TMS320F240; hybrid stepping motor; open-looped control; sensorless direct torque control; stator flux linkage; stator voltage space vectors; AC motors; Acceleration; Couplings; Digital signal processing; Functional analysis; Open loop systems; Sensorless control; Stators; Torque control; Voltage; DSP; Hybrid stepping motor; direct torque control; open-looped control; sensorless;
Conference_Titel :
Mechatronics and Automation, Proceedings of the 2006 IEEE International Conference on
Conference_Location :
Luoyang, Henan
Print_ISBN :
1-4244-0465-7
Electronic_ISBN :
1-4244-0466-5
DOI :
10.1109/ICMA.2006.257623
