Title :
Research on reliability of a hybrid Three-Redundant Electro-Mechanical Actuator
Author :
Wang, Na ; Zhou, Yuanjun
Author_Institution :
Dept. of Autom. Sci. & Electr. Eng., Beihang Univ., Beijing, China
Abstract :
In this paper, a novel hybrid Three-Redundant Electro-Mechanical Actuator (EMA) system is proposed, which is mainly composed of two automatic brushless DC motor (BLDCM) drivers and one manual BLDCM driver. Each driver is in charge of the control of one brushless DC motor. At any tine, only one set of drivers works to realize the accurate position control. The rationality of the system is analysed then. Compared with the traditional redundant EMA with parallel structure, this system exhibits the advantages of more simple structure, more flexibility control and higher reliability. Two kinds of the fault tolerant operating modes are presented. The result is elicited by analyse and calculation that the hybrid Three-Redundant EMA improves the reliability of the system remarkably.
Keywords :
DC motor drives; brushless DC motors; electric actuators; fault tolerance; machine control; position control; EMA system; automatic brushless DC motor driver; fault tolerant operating mode; hybrid three-redundant electro-mechanical actuator; manual BLDCM driver; position control; reliability; Actuators; Aerospace electronics; Aircraft; Automatic control; Brushless DC motors; Circuits; Control systems; Gears; Power electronics; Power system reliability; DSP; Three-Redundant EMA; position servo control; reliability;
Conference_Titel :
Mechatronics and Automation, 2009. ICMA 2009. International Conference on
Conference_Location :
Changchun
Print_ISBN :
978-1-4244-2692-8
Electronic_ISBN :
978-1-4244-2693-5
DOI :
10.1109/ICMA.2009.5246222
