Title
Concept Development and Design of a Spherical Wheel Motor (SWM)
Abstract
This paper presents the design concept, models' and open-loop control of a particular form of a variable-reluctance spherical motor (VRSM), referred here as a spherical wheel motor (SWM). Unlike existing spherical motors where design focuses have been on controlling the three degrees of freedom (DOF) angular displacements, the SWM offers a means to control the orientation of a continuously rotating shaft in an open-loop (OL) fashion. We provide a formula for deriving different switching sequences (full step and fractional step) for a specified current magnitude and pole configurations. The concept feasibility of an OL controlled SWM has been experimentally demonstrated on a prototype that has 8 rotor permanent-magnet (PM) pole-pairs and 10 stator electromagnet (EM) pole-pairs.
Year
DOI
Venue
2005
10.1109/ROBOT.2005.1570676
ICRA
Keywords
Field
DocType
spherical motor,stepper,wrist actuator,ball-joint-like actuator,brushless motor,open loop systems,actuators,induction motors,torque
Switched reluctance motor,Magnetic reluctance,Control theory,Electromagnet,Control engineering,Rotor (electric),Concept development,Stator,Brushless motors,Engineering,Stepper
Conference
Volume
Issue
ISSN
2005
1
1050-4729
ISBN
Citations 
PageRank 
0-7803-8914-X
9
1.31
References 
Authors
3
4
Name
Order
Citations
PageRank
Kok-Meng Lee1413126.13
Kok-Meng Lee2413126.13
Hungsun Son3138.57
Jeffry Joni4143.81