Research on the Mathematics Model of a Permanent Magnet Linear Oscillatory Actuator with Moving Iron and Non-Salient Pole

Abstract:

A novel permanent magnet (PM) linear oscillatory actuator (LOA) of moving-iron and non-salient pole was presented on the basis of LOA research. The mathematical model of the LOA based on the magnetic circuit method was established, and derived the relationship between electromagnetic thrust and coil current, mover’s displacement. The thrust of LOA was simulated by the Finite Element Method (FEM). The corresponding experimental results verifies the electromagnetic thrust is direct proportional to coil current and reverse proportional to mover’s displacement during effective mover’s displacement. So the derived mathematical model based on the magnetic circuit method is correct. This conclusion provides a theoretical basis for the further calculation of thrust, the selection of control current and the design of controlling method.

• Periodical: Advanced Materials Research (Volumes 443-444)
• Pages: 169-176
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.443-444.169
• Online since: January 2012
• Authors: Hai Peng Pan, Yang Wang, Yong Ming Xia, Wei Zhang
• Keywords: Equivalent Magnetic Circuit Method, Finite Element Method (FEM), Linear Oscillatory Actuator, Mathematical Models, Non-Salient Pole

References

[1] T. Izumi, Y. Ibuki, M. Yamashita, H. SHIMIZU, S. Nakayama and H. Abe, High-efficient linear oscillatory actuator drive systems optimized current waveform, Power Conversion Conference - Nagoya, pp.925-930, (2007).

DOI: 10.1109/pccon.2007.373077

[2] S. B. Yoon, I. S. Jung, K. C. Kim and D. S. Hyun, Dynamic analysis of a reciprocating linear actuator for gas compression using finite element method, IEEE Transactions on Magnetics, vol. 33, no. 5, pp.4113-4115, (1997).

DOI: 10.1109/20.619680

[3] A. Yoshitake, K. Haraa, T. Tcdaka, Y. Ishihara and K. Hirata, Dynamic analysis of a linear oscillatory actuator under feedback control, IEEE Transactions on Magnetics, vol. 33, no. 2, pp.1662-1665, (1997).

DOI: 10.1109/20.582590

[4] D. K. Kim, D. Y. Lee, C. G. Jung, and G. T. Kim, Improvement of operating characteristics for mc-loa taking account ofpermanent magnet arrangement, IEEE Transactions on Magnetics, vol. 40, no. 4, pp.2038-2040, (2004).

DOI: 10.1109/tmag.2004.832506

[5] T. H. Kim, H. W. Lee, Y. H. Kim, J. Lee, Development of a flux concentration-type linear oscillatory actuator, IEEE Transactions on Magnetics, vol. 40, no. 4, pp.2092-2094, (2004).

DOI: 10.1109/tmag.2004.832461

[6] R. E. Clark, D. S. Smith, P. H. Mellor, D. Howe, Design optimisation of moving-magnet actuators for reciprocating electro-mechanical systems, IEEE Transactions on Magnetics, vol. 31, no. 6, pp.3746-3748, (1995).

DOI: 10.1109/20.489758

[7] H. Enomoto, K. Harada, Y. Ishihara, T. Todaka, Optimal design of linear oscillatory actuator using genetic algorithm, IEEE Transactions on Magnetics, vol. 34, no. 5, pp.3515-3518, (1998).

DOI: 10.1109/20.717829

[8] N. Nishizawa, T. Ishii and H. Yamada, Performance analysis of a linear oscillatoryactuator for a milking unit, IEEE Transactions on Magnetics, vol. 9, no. 6, pp.122-126, (1994).

DOI: 10.1109/tjmj.1994.4565968

[9] Y. Takano, S. Yaezaki, K. Matsumoto, N. Nishizawa and H. Yamada, Thrust simulation of a linear oscillatory actuator, IEEE Transactions on Magnetics, vol. 33, no. 2, pp.2085-2088, (1995).

DOI: 10.1109/20.582729

[10] N. Misron, W. K. Chai, M. Norman, Thrust characteristics of linearoscillatory actuator for liquid pump and its effect to vibration, The Fifth International Symposium on Linear Drivesfor Industry Applications, pp.60-63, (2005).

[11] Yunyue Ye, Principle and Application of Linear Motor, BeiJing: China Machine Press, 2000 (In Chinese).

[12] Jianhua Wu, Design and Application of Switched Reluctance Motor, BeiJing: China Machine Press, 2000 (In Chinese).

[13] Wugang Tian, Mengchun Pan, Lixiang Chen, Linear Synchronous Motor magnetic field and Force FE Simulation Analysis, Micromotors, Vol. 37, pp.19-21, April 2004 (In Chinese).

[14] R. E. Clark, G. W. Jewell and D. Howe, Finite element analysis of short-stroke linear motors and actuators, Current Trends in the Use of Finite Elements in Electromechanical Design and Analysis(Ref. No. 2000/013), IEE Seminar on, 8/1-8/6.

DOI: 10.1049/ic:20000055