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산업용 전기 차량의 저 분해능 마그네틱 엔코더를 사용한 속도 측정 방법
박기형(Gi-Hyoung Park),정세종(Se-Jong Jeong) 전력전자학회 2011 전력전자학술대회 논문집 Vol.2011 No.7
Recently, many industrial electric vehicles have been developed using various ac-motor drive technologies including field oriented vector control. Generally, a magnetic encoder is installed to have resistance to vibration and dust, and it is cost-effective. However, it is difficult to get an accurate rotor speed for high performance of vector control, because a resolution of the magnetic encoder is low and its phase accuracy is poor. In order to overcome this hardware problem, this study proposes a speed measurement algorithm using moving window for low-resolution magnetic encoder. This algorithm is experimentally tested and successfully applied to traction application of industrial electric vehicle.