scholarly journals An application of sensorless drive technology to a three-phase hybrid stepping motor drive

Author(s):  
S. Ogasawara
Author(s):  
Jasper De Viaene ◽  
David Ceulemans ◽  
Stijn Derammelaere ◽  
Kurt Stockman

The essential advantage of the conventional stepping motor drive technique bases on step command pulses is the ability of open-loop positioning. By ruling out the cost of a position sensor, stepping motors are preferred in low power positioning applications. However, machine developers also want to obtain high dynamics with these small and cheap stepping motors. For that reason, stepping motors are used at its limits as much as possible. A drawback of the open-loop control is the continuous risk of missing a step due to overload. Due to this uncertainty, robustness is a major issue in stepping motor applications. Until today, to reduce the possibility of step loss, the motor is typically driven at maximum current level or is over-dimensioned with results in low-efficiency. Therefore in this paper, a self-learning [Formula: see text]-controller optimizing the current is presented. Moreover, to allow broad industrial applicability, this technique is computationally simple, needs no mechanical or electrical parameter knowledge and take into account the unique character of stepping motors and their conventional drive technique based on step command pulses. The proposed algorithm is validated through measurements on a hybrid stepping motor.


2013 ◽  
Vol 853 ◽  
pp. 428-434 ◽  
Author(s):  
Xue Qin Zheng

Thanks to the development of microprocessors, hybrid stepping motors have been widely used in many areas where they perform positioning operations. However, the stepping motor suffers from system variations, low performance and lack of adaptability to load variations, which slow down their responding speed of high-precision positioning operations. In this paper, a computational verb PID controller is proposed to control the position of a stepping motor drive. The simulation results show that the computational verb PID controller has better performances than conventional and fuzzy PID controllers. The simulation results also show that the responding speed and positioning accuracy of the controlled hybrid stepping motor were greatly improved. Computational verb PID controller has much less computational complexity than fuzzy PID controller.


2013 ◽  
Vol 744 ◽  
pp. 253-257
Author(s):  
Nan Yang ◽  
Yi Ming Wei ◽  
Jiao Yu Liu

Uniform constant amplitude rotating current vector subdivision and SVPWM technology are applied to micro-stepping driving system of three-phase hybrid stepping motor. Decompose the stator current vector of the stepping motor into the torque current and the magnetizing current, and then control the currents of decomposition, which makes the amplitude of the resultant stator current vector remain the same. Simulation results show that the designed micro-stepping driving system realizes equal stepper angle, constant torque, and arbitrary variable micro-stepping driving. The use of micro-stepping driving technology improves the stepping motors control accuracy and stability, which promotes the application range of stepping motor and has good practical value.


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