DocumentCode :
2255761
Title :
Speed measurement of a general DC brushed motor based on sensorless method
Author :
Chieh-Tsung Chi ; Shih-An Yin
Author_Institution :
Dept. of Electr. Eng., Chienkuo Technol. Univ., Changhua, Taiwan
fYear :
2012
fDate :
12-14 Dec. 2012
Firstpage :
332
Lastpage :
337
Abstract :
DC brushed motor (abbreviated as DC motor later) has some outstanding advantages for example cheap and control easy compared to other types of motor. It has already been widely used in industrial machines and household appliances. In many applications of DC motor, the speed of the DC motor is often a basic required to be measured parameter. To achieve this purpose, a direct speed measuring method which a speed sensor with suitable dimension or resolution needs to be coupled with the axis of DC motor and leads to more complicated mechanical structure and control circuit should be included in equipment. Moreover, if the setup place of the speed sensor is insufficient, the direct speed measuring method is then not allowed to be used. The current parameter is one of the independent variables of DC motor. Many important dynamic behaviors of the DC motor will be characterized by this parameter. In this paper, we will propose a new speed measurement of DC motor based on a sensorless speed method. In order to verify the feasibility of our proposed method, we test and compare the measured motor-speed values of electric-spray pump by using the conventional speed measuring method (couple a speed sensor with rotating axis of DC motor) and the proposed sensorless speed measuring method, respectively. The experimental measured results show the method that the speed measurement of DC motor is read and calculated based on the frequency of ripple component of the motor current is actually feasible.
Keywords :
DC motor drives; angular velocity; domestic appliances; electric sensing devices; pumps; sensorless machine control; sprays; velocity measurement; DC motor axis; current parameter; direct speed measuring method; dynamic behaviors; electric-spray pump; household appliances; industrial machines; mechanical structure; motor current; parameter measurement; ripple component frequency; sensorless method-based general DC brushed motor; sensorless speed method-based DC motor; speed measurement; speed measuring method; speed sensor; DC brushed motor; electric-sprayer pump; ripple frequency; sensorless; speed measurement;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
IPEC, 2012 Conference on Power & Energy
Conference_Location :
Ho Chi Minh City
Type :
conf
DOI :
10.1109/ASSCC.2012.6523288
Filename :
6523288
Link To Document :
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