Experimental Investigation

  • Liang YanEmail author
  • I-Ming Chen
  • Chee Kian Lim
  • Guilin Yang
  • Kok-Meng Lee
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 4)


In this chapter, the experimental investigation is conducted on the prototype of the PM spherical actuator to verify the analytical magnetic field model and torque model proposed in Chapter 2 and Chapter 3. The experimental investigation of the PM spherical actuator consists of two major tasks: measurement of magnetic field distribution and torque variation.


Torque Output Rotor Surface Torque Measurement Hall Probe Torque Variation 
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  1. 1.
    Lake Shore Cryotronics, Inc. (2005) Specification of Gauss Meter. In: The website of Lake Shore Cryotronics, Inc. Available online: Cited May 2005
  2. 2.
    Mintchev P M, Christov C D, Rahman A M et al (1975) Analysis of flux in electromagnets having rectangular cross-section. IEEE Transactions on Magnetics, vol. 11, no. 5:1550–1551, September 1975. CrossRefGoogle Scholar
  3. 3.
    Mintchev P M (1987) Optimum design of electromagnets by means of the goodness factor approach. IEEE Transactions on Magnetics, vol. 23, no. 5:3777–3779, September 1987. CrossRefGoogle Scholar
  4. 4.
    Furlani E P (1992) A method for predicting the field in permanent-magnet axial-field motors. IEEE Transactions on Magnetics, vol. 28, no. 5:2061–2066, September 1992. CrossRefGoogle Scholar
  5. 5.
    Enokizono M, Morikawa M, Fujiyama S, Sievert J, Serikawa I et al (1999) Distribution of local magnetic properties in three-phase induction motor model core. IEEE Transactions on Magnetics, vol. 35, no. 5:3937–3939, September 1999. CrossRefGoogle Scholar
  6. 6.
    Wang J, Jewell G W, Howe D et al (1998) Spherical actuators with multiple degrees-of-freedom. IEE Colloquium on Limited motion electrical actuation systems, Hague, Netherlands, no. 1998/494:8/1–8/6, Seoul, Korea, 13-15 October 1998. Google Scholar
  7. 7.
    Wang J, Jewell G W, Howe D et al (1998) Analysis, design and control of a novel spherical permanent-magnet actuator. IEE Proceedings: Electric Power Applications, Hague, Netherlands, vol. 145, no. 1:61–71, January 1998. Google Scholar
  8. 8.
    Lake Shore Cryotronics, Inc. (1997) Model 460: 3-Channel Gaussmeter Manual. USA, 1997. Google Scholar
  9. 9.
    NSK, Ltd. (1996) Robto Modules system: User’s manual. USA, 1996. Google Scholar
  10. 10.
    Deterco Inc. (2005) Specification of the Millitron Probe. Available online: Cited May 2005
  11. 11.
    Amtec Inc. (2005) Specification of the single-axis servo motor. Available online: Cited May 2005
  12. 12.
    Deterco Inc. (2005) Specification of the Millitron. Available online: Cited May 2005
  13. 13.
    Zhang Z M, Zhang Y Y, Xie Y B, Chen Z X, Qiu D M, Zhu J et al (1986) Theory of Hydrodynamic Lubrication of Journal Bearing. China Higher Education Press, China, 1986. Google Scholar
  14. 14.
    Lin C C, Segel L A et al (1974) Mathematics applied to deterministic problems in the natural sciences. Macmillan Publishing Co., Inc., USA, 1974. zbMATHGoogle Scholar
  15. 15.
    Fowler A C (1997) Mathematical Models in the Applied Sciences. Cambridge University Press, USA, 1997. Google Scholar
  16. 16.
    Stark K C, Mehregany M, Phillips S M et al (1997) Mechanical Coupling and Direct Torque Measurement of Outer-rotor Polysilicon Micromotors. Proceedings of the 10th International Workshop on Micro Electro Mechanical Systems, Nagoya, Japan, 26–30, Albuquerque, New Mexico, USA, January 1997. Google Scholar
  17. 17.
    Lin C E, Jou H L, Yan J H et al (1994) A dynamic method for magnetic torque measurement using pendulum motion system. IMTC’94 IEEE Conference, Nagoya, Japan, vol. 3:376–379, Hamamatsu, Japan, 10–12 May 1994. Google Scholar
  18. 18.
    Beihoff B (1996) A survey of torque transduction methodologies for industrial applications. Conference Record of 1996 Annual, Pulp and Paper Industry Technical Conference, Birmingham, Alabama, USA, vol. 3:220–229, Hamamatsu, Japan, 10–14 June 1996. Google Scholar
  19. 19.
    Amano T, Ishii T, Nakamura K, Ueha S et al (1998) An ultrasonic actuator with multi-degree of freedom using bending and longitudinal vibrations of a single stator. Proceedings of 1998 IEEE International Ultrasonic Symposium L-5, vol. 22:667–670, Sendai, Japan, October 1998. Google Scholar
  20. 20.
    Mitchell J K, Jewell G W, Wang J, Bingham C M, Howe D et al (2002) Influence of an aperture on the performance of a two-degree-of-freedom iron-cored spherical permanent-magnet actuator. IEEE Transactions on Magnetics, vol. 38, no. 6:3650–3653, November 2002. CrossRefGoogle Scholar
  21. 21.
    Roth R B (1992) An Experimental Investigation and Optimization of a Variable Reluctance Spherical Motor. Thesis of Georgia Institute of Technology, GA, USA, 1992. Google Scholar
  22. 22.
    Zhou Z (1995) Real-Time Control and Characterization of a Variable Reluctance Spherical Motor. Thesis of Georgia Institute of Technology, GA, USA, May 1995. Google Scholar
  23. 23.
    Deterco Inc. (2005) Specification of the Millitron. Available online: Cited May 2005
  24. 24.
    ATI Industrial Automation (2002) Manual of Multi-Axis Force/Torque Sensor. USA, 2002. Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Liang Yan
    • 1
    Email author
  • I-Ming Chen
    • 2
  • Chee Kian Lim
    • 3
  • Guilin Yang
    • 4
  • Kok-Meng Lee
    • 5
  1. 1.School of Automation Science and Electrical EngineeringBeihang UniversityBeijingPeople’s Republic of China
  2. 2.School of Mechanical and Aerospace EngineeringNanyang Technological UniversitySingaporeSingapore
  3. 3.School of Mechanical & Aeronautical EngineeringSingapore PolytechnicSingaporeSingapore
  4. 4.Singapore Institute of Manufacturing TechnologyNanyangSingapore
  5. 5.Georgia Institute of TechnologyAtlantaUSA

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