### Abstract

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.

Original language | English |
---|---|

Pages (from-to) | 43-46 |

Number of pages | 4 |

Journal | Journal of Mechanical Science and Technology |

Volume | 24 |

Issue number | 1 |

DOIs | |

Publication status | Published - Feb 2010 |

### Fingerprint

### Keywords

- Computer simulation
- Electro-magnet
- Omnidirection
- Spherical motor

### ASJC Scopus subject areas

- Mechanical Engineering
- Mechanics of Materials

### Cite this

*Journal of Mechanical Science and Technology*,

*24*(1), 43-46. https://doi.org/10.1007/s12206-009-1163-0

**Development of a spherical motor driven by electro-magnets.** / Ikeshita, Seiji; Gofuku, Akio; Kamegawa, Tetsushi; Nagai, Takakazu.

Research output: Contribution to journal › Article

*Journal of Mechanical Science and Technology*, vol. 24, no. 1, pp. 43-46. https://doi.org/10.1007/s12206-009-1163-0

}

TY - JOUR

T1 - Development of a spherical motor driven by electro-magnets

AU - Ikeshita, Seiji

AU - Gofuku, Akio

AU - Kamegawa, Tetsushi

AU - Nagai, Takakazu

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

UR - http://www.scopus.com/inward/record.url?scp=77949620628&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77949620628&partnerID=8YFLogxK

U2 - 10.1007/s12206-009-1163-0

DO - 10.1007/s12206-009-1163-0

M3 - Article

AN - SCOPUS:77949620628

VL - 24

SP - 43

EP - 46

JO - Industrial & Engineering Chemistry Research

JF - Industrial & Engineering Chemistry Research

SN - 0888-5885

IS - 1

ER -