Low-cost sensorless control of brushless DC motors using a frequency-independent phase shifter

This paper describes a sensorless control scheme for brushless DC motors (BLDCMs) using a phase shifter (FlPS) which can shift the zero-crossing point of the input signal with a specified amount of phase. The detection performance of the proposed FIPS is independent of the frequency of the input signal and quite robust with respect to the measurement noise. It is shown that the proposed sensorless control scheme using the FIPS is more effective in the respects of noise-robustness and cost than the previously known schemes. Moreover, a flux-weakening control scheme can be easily incorporated into the proposed sensorless control scheme. The generality and practicality of the proposed sensorless control scheme is demonstrated through performance analysis and experiments under various operating conditions.

[1]  Carlos H. Muravchik,et al.  A nonlinear reduced order observer for permanent magnet synchronous motors , 1996, IEEE Trans. Ind. Electron..

[2]  R. Wu,et al.  A permanent magnet motor drive without a shaft sensor , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[3]  Kenichi Iizuka,et al.  Microcomputer Control for Sensorless Brushless Motor , 1985, IEEE Transactions on Industry Applications.

[4]  Kenzo Kamiyama,et al.  A Microprocessor-Controlled High-Accuracy Wide-Range Speed Regulator for Motor Drives , 1982, IEEE Transactions on Industrial Electronics.

[5]  Ping Zhou,et al.  of Permanent Magnet , 1994 .

[6]  Thomas M. Jahns.  Torque Production in Permanent-Magnet Synchronous Motor Drives with Rectangular Current Excitation , 1984, IEEE Transactions on Industry Applications.

[7]  Akira Sugawara,et al.  Stepping motors and their microprocessor controls , 1994 .

[8]  C. French,et al.  Control of permanent magnet motor drives using a new position estimation technique , 1996 .

[9]  Jorge A. Solsona,et al.  A nonlinear reduced order observer for permanent magnet synchronous motors , 1994, Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics.

[10]  Gene F. Franklin,et al.  Feedback Control of Dynamic Systems , 1986 .

[11]  N. Matsui,et al.  Brushless DC motor control without position and speed sensors , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.

[12]  Ion Boldea,et al.  Permanent Magnet, Reluctance, and Self-Synchronous Motors , 1993 .

[13]  H. Akagi,et al.  An approach to position sensorless drive for brushless DC motors , 1990, Conference Record of the 1990 IEEE Industry Applications Society Annual Meeting.