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http://dx.doi.org/10.5370/KIEE.2018.67.7.840

Realization of Velocity of BLDC Motor Using Linear Type Hall-effect Sensor and Enhanced Differentiator  

Gu, Jeong-Hoi (Agency for Defense Development)
Choi, Jang-Young (Dept. of Electrical Engineering, Chungnam National University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.67, no.7, 2018 , pp. 840-845 More about this Journal
Abstract
BLDC motor is widely used as a servo motor due to high efficiency, high power density, low inertia, and low maintenance. However, BLDC motor generally needs position and velocity sensors to control actuation system. Usually, analog tachometers and encoders have been used for velocity feedback sensors. However, using these types of sensors have problems such as the cost, space, and malfunction. So, This paper is to propose a new velocity measurement method using linear hall-effect and enhanced differentiator for BLDC motor. In order to verify the feasibility of the proposed method, several simulations and experiments are performed. It is shown that the proposed velocity measurement method can satisfy the requirements without using of velocity sensor.
Keywords
BLDC motor; Velocity sensor; Linear type Hall-effect sensor; Enhanced Differentiator(ED);
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