Sensorless Speed Control for Brushless DC Motors System Using Sliding-Mode Controller and Observers

Author(s):  
Chunye Zheng ◽  
Yang Li
Sensors ◽  
2010 ◽  
Vol 10 (7) ◽  
pp. 6901-6947 ◽  
Author(s):  
José Carlos Gamazo-Real ◽  
Ernesto Vázquez-Sánchez ◽  
Jaime Gómez-Gil

2014 ◽  
Vol 615 ◽  
pp. 11-17
Author(s):  
Lai Cai Ju ◽  
Zi Qiang Wang ◽  
Meng Yu He

This paper designs and implements a sliding mode observer with line-to-line trapezoidal back-EMF for brushless DC (BLDC) motor. Through the detection of three phase voltage and the current, the phase to-phase back-EMF is observed, and then the position signal and the rotor speed are estimated. The corresponding relationship between back-EMF and six rotor positions of the motor is established in this paper. With saturation function instead of sign function, the line current difference is used as the sliding surface. The whole control system employs an inner current PI loop with an outer speed PI loop. Simulation results show that the designed observer can correctly estimate the position information and speed, with strong robustness to changes of system parameters and external disturbances.


2010 ◽  
Vol 43 (22) ◽  
pp. 75-80 ◽  
Author(s):  
Chang Hyun Kim ◽  
Ji Hoon Yang ◽  
Dong Gyun Lim ◽  
Byung Suhl Suh

Author(s):  
Ali Mousmi ◽  
Ahmed Abbou ◽  
Yassine El Houm

<span lang="EN-US">This paper presents a novel hybrid control of a BLDC motor using a mixed sliding mode and fuzzy logic controller. The objective is to build a fast and robust controller which overcome classical controllers’ inconveniences and exploit the fast response of brushless dc motors characterized by an intense torque and fast response time. First the paper study pros and cons of both sliding mode and fuzzy logic controllers. Then the novel controller and its stability demonstration are presented. Finally the proposed controller method is used for the speed control of a BLDC motor 3KW. The obtained results are compared with those of a fuzzy logic and a conventional sliding mode controller. It allows to show performance of the proposed controller in terms of speed response and reaction against disturbances, which is improved more than 5 times without losing stability or altering tracking accuracy</span>


is main goal of upcoming and present applications. However, its possible to achive these aims using brushless DC motors (BLDC), due to its use in many applications. The applications such as sppining, drilling, elevators, lathes, etc can be exicuted using BLDC motor and can replace conventional DC brush motor. The effective vechiel control required for applications of variable speed can be achived using BLDC motors. This paper presents speed control of BLDC motor for open loop using PID and neural network techniques and their comparative study. From the simulation study it is observed that neural network gives better performance compaiered to other technique.


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