RT info:eu-repo/semantics/article
T1 A novel method for sensorless speed detection of brushed DC motors
A1 Vázquez Sánchez, Ernesto
A1 Sottile, Joseph
A1 Gómez Gil, Jaime
K1 Brushed dc motor
K1 Sensorless
K1 Speed observer
K1 Spectral analysis
K1 Current
K1 33 Ciencias Tecnológicas
AB Many motor applications require accurate speed measurement. For brushed dc motors, speed can be measured with conventional observers or sensorless observers. Sensorless observers have the advantage of not requiring any external devices to be attached to the motor. Instead, voltage and/or current are measured and used to estimate the speed. The sensorless observers are usually divided into two groups: those based on the dynamic model, and those based on the ripple component. This paper proposes a method that measures the current of brushed dc motors and analyses the position of its spectral components. From these spectral components, the method estimates the motor speed. Three tests, performed each with the speeds ranging from 2000 to 3000 rpm either at constant-speed, at slowly changing speeds, or at rapidly changing speeds, showed that the average error was below 1 rpm and that the deviation error was below 1.5 rpm. The proposed method: (i) is a novel method that is not based on either the dynamic model or on the ripple component; (ii) requires only the measurement of the current for the speed estimation; (iii) can be used for brushed dc (direct current) motors with a large number of coils; and (iv) achieves a low error in the speed estimation.
PB MDPI
YR 2016
FD 2016
LK https://uvadoc.uva.es/handle/10324/57412
UL https://uvadoc.uva.es/handle/10324/57412
LA eng
NO Applied Sciences, 2016, vol. 7, n. 1, p. 14
NO Producción Científica
DS UVaDOC
RD 22-nov-2024