05-10-2010, 03:01 PM
[attachment=5055]
SPEED-SENSORLESS SEPARATELY EXCITED DC MOTOR DRIVE
WITH AN ADAPTIVE OBSERVER
*Samart Yachiangkam **Cherdchai Prapanavarat **Udomsak Yungyuen and **Sakorn Po-ngam
* Department of Electrical Engineering, Rajamangala Institute of Technology, Northern Campus
128 Huay Kaew Road, Muang District, Chiangmai 50300 Thailand.
** Department of Electrical Engineering, Faculty of Engineering
King Mongkut's University of Technology Thonburi
91 Prachauthit Road, Bangmod, Thungkhru District, Bangkok 10140 Thailand.
ABSTRACT
This paper presents a speed-sensorless separately excited dc motor drive which uses the adaptive observer to estimate the rotor speed. In this paper, a stability analysis of the speed estimation is carried out. The modified feedforward control is integrated with the adaptive observer to reduce the model redundancy and to simplify the implementation. The design guideline for the feedback gain and the speed controller are also given to assure the system stability for the entire operating region. Simulation and experimental results are given to verify the validity of the proposed method.
SPEED-SENSORLESS SEPARATELY EXCITED DC MOTOR DRIVE
WITH AN ADAPTIVE OBSERVER
*Samart Yachiangkam **Cherdchai Prapanavarat **Udomsak Yungyuen and **Sakorn Po-ngam
* Department of Electrical Engineering, Rajamangala Institute of Technology, Northern Campus
128 Huay Kaew Road, Muang District, Chiangmai 50300 Thailand.
** Department of Electrical Engineering, Faculty of Engineering
King Mongkut's University of Technology Thonburi
91 Prachauthit Road, Bangmod, Thungkhru District, Bangkok 10140 Thailand.
ABSTRACT
This paper presents a speed-sensorless separately excited dc motor drive which uses the adaptive observer to estimate the rotor speed. In this paper, a stability analysis of the speed estimation is carried out. The modified feedforward control is integrated with the adaptive observer to reduce the model redundancy and to simplify the implementation. The design guideline for the feedback gain and the speed controller are also given to assure the system stability for the entire operating region. Simulation and experimental results are given to verify the validity of the proposed method.
