The Study of Movement Encoder with Low Cost and High Performance

Abstract:

The paper proposes a design scheme of movement encoder with low cost and high performance. The scheme can provide higher precise rotor position signal for motor by a hall-effect latch and a linear hall-effect sensor, and it can also provide rotational speed and direction of motor by a winding with full pole distance, at last we deduce a torque balance equation based on speed and acceleration of motor. The study shows that the scheme with low cost have much higher position precision than traditional rotational transformer and hall-effect position sensor, and it does not exist amplitude error and phase error, function error is small. It is very worthy to the wide application of motor of electric bicycle, wind-driven generator, electric car, and servomotor, etc.

• Periodical: Applied Mechanics and Materials (Volumes 229-231)
• Pages: 845-848
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.229-231.845
• Online since: November 2012
• Authors: Xiao Wei Wang
• Keywords: Electric Bicycle, Linear Hall-Effect Sensor, Movement Encoder, Servomotor

References

[1] Lequesne B, Schroeder T. High-accuracy magnetic position encoder concept. Industry Applications, IEEE Transactions on[J], 1999, 35(3): 568-576.

DOI: 10.1109/28.767003

[2] Wekhande S, Agarwal V. High-resolution absolute position Vernier shaft encoder suitable for high-performance PMSM servo drives. Instrumentation and Measurement, IEEE Transactions on[J], 2006, 55(1): 357-364.

DOI: 10.1109/tim.2005.862020

[3] Denic D, Randelovic I. New Type of Position Encoder with Possibility of Direct Zero Position Adjustment[C]. Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications, 2005. IDAACS 2005. IEEE, 2005: 299-305.

DOI: 10.1109/idaacs.2005.282991

[4] Benkhoris M F, Ait-Ahmed M. Discrete speed estimation from a position encoder for motor drives[C]. Power Electronics and Variable Speed Drives, 1996. Sixth International Conference on (Conf. Publ. No. 429), 1996: 283-287.

DOI: 10.1049/cp:19960928

[5] Munggonrit S, Konghirun M, Tungpimolrut K. Implementation of speed controlled Permanent-Magnet Synchronous Motor drive using low-resolution encoder for low-cost applications[C]. Electrical Machines and Systems (ICEMS), 2010 International Conference on, 2010: 700-705.

DOI: 10.1109/icems.2019.8922017

[6] De Donato, Harke M C, Capponi F G. Sinusoidal surface-mounted pm machine drive using a minimal resolution position encoder[C]. Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE, 2008: 104-110.

DOI: 10.1109/apec.2008.4522707

[7] Concari C, Franceschini G, Toscani A. Vibrationless alignment algorithm for incremental encoder based BLDC drives[C]. Energy Conversion Congress and Exposition, 2009. ECCE 2009. IEEE, 2009: 3456-3460.

DOI: 10.1109/ecce.2009.5316335