TY - JOUR
T1 - Development of a spherical motor driven by electro-magnets
AU - Ikeshita, Seiji
AU - Gofuku, Akio
AU - Kamegawa, Tetsushi
AU - Nagai, Takakazu
N1 - Funding Information:
This work was supported by Research Program (Advancement of Production) supported by Okayama Prefecture Industrial Promotion Foundation, Japan.
PY - 2010/2
Y1 - 2010/2
N2 - This paper presents a spherical motor driven by electro-magnets that can rotate omnidirectionally with some degrees of rotation angle error independent of rotation direction. The spherical motor is composed of a spherical rotor, a semi-spherical stator, a control PC, a control circuit, and a DC power supply. The rotor has 92 neodymium magnets. On the other hand, 84 electro-magnets are arranged on the stator. Each electro-magnet can be excited to north or south magnetic pole. The control PC calculates the posture of the rotor after a small time interval and generates the pattern of excitation of electro-magnets in order to rotate the rotor to its calculated posture. The results of the performance of the developed spherical motor show that the maximum torque is 0.24 (N·m), the maximum rotation speed is 2.5 (rad/s), and the average error of rotation angle is several degrees.
AB - This paper presents a spherical motor driven by electro-magnets that can rotate omnidirectionally with some degrees of rotation angle error independent of rotation direction. The spherical motor is composed of a spherical rotor, a semi-spherical stator, a control PC, a control circuit, and a DC power supply. The rotor has 92 neodymium magnets. On the other hand, 84 electro-magnets are arranged on the stator. Each electro-magnet can be excited to north or south magnetic pole. The control PC calculates the posture of the rotor after a small time interval and generates the pattern of excitation of electro-magnets in order to rotate the rotor to its calculated posture. The results of the performance of the developed spherical motor show that the maximum torque is 0.24 (N·m), the maximum rotation speed is 2.5 (rad/s), and the average error of rotation angle is several degrees.
KW - Computer simulation
KW - Electro-magnet
KW - Omnidirection
KW - Spherical motor
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U2 - 10.1007/s12206-009-1163-0
DO - 10.1007/s12206-009-1163-0
M3 - Article
AN - SCOPUS:77949620628
SN - 1738-494X
VL - 24
SP - 43
EP - 46
JO - Journal of Mechanical Science and Technology
JF - Journal of Mechanical Science and Technology
IS - 1
ER -