| Title |
Least Mean Square Estimator for Motor Frequency Measurement Based on Linear Hall Sensor |
| Authors |
최가형(Choi, Ga-Hyoung) ; 나원상(Ra, Won-Sang) ; 곽기석(Kwak, Ki-Seok) ; 윤태성(Yoon, Tae-Sung) ; 박진배(Park, Jin-Bae) |
| Keywords |
Hall sensor ; Least mean square ; Least square ; DC offset ; Frequency estimation |
| Abstract |
Motor frequency can be measured by a hall sensor. Among the many hall sensors, a linear type hall sensor is good at high accuracy frequency measuring problem. However, in general, this linear type hall sensor has DC offset which can vary along sensor's operating voltage change. Therefore, In motor frequency measurement problem using the linear hall sensor, it needs an estimator that can estimate frequency and DC offset simultaneously. In this paper, we propose the least mean square estimator to estimate motor frequency. To verify its performance, we compare the LMS estimator with a commercial analog tachometer. Experimental results shows the proposed LMS estimator works well in varying frequency and stationary DC offset. |