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Digital current loop control of a brushless DC motor

Cox, Noel Patrick (1987) Digital current loop control of a brushless DC motor. Master of Engineering thesis, Dublin City University.

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Abstract

Servo control of motors has important applications m such areas as robotics, numerically controlled machines and 'fly by wire* aircraft systems. The development of high power high coercivity magnetic alloys, such as samarium cobalt, has led to the advent of the brushless dc machine, which offers a more advantageous alternative to the brush machine. The brushless DC machine eliminates the need for brush contacts, through the use of electronic commutation. It has better thermal characteristics, as the rotor does not carry any current, and the rotor moment of inertia tends to be smaller than an equivalent brush machine. To achieve servo performance with a brushless dc machine requires the control of the motors torque angle. This thesis proposes digital control schemes for torque angle control, presents a simulation of the motor system with the schemes implemented, and concludes that digital schemes are more advantageous than analog control schemes, in the context of torque angle control of a brushless DC system.

Item Type:Thesis (Master of Engineering)
Date of Award:1987
Refereed:No
Supervisor(s):Devitt, Frank
Uncontrolled Keywords:Robotics; Motor systems; Servo controls
Subjects:Engineering > Electronic engineering
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 License. View License
ID Code:18450
Deposited On:18 Jul 2013 14:41 by Celine Campbell. Last Modified 18 Jul 2013 14:41

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