Notice of Retraction Design and realization of the brushless DC motor without position sensor control system bASED on DSP

Notice of Retraction After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE's Publication Principles. We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper. The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org. The Paper Introduces a kind of control system of brushless DC motor without position sensor based on TMS320LF2812 DSP. It research on the detecting schemes of rotor position, meanwhile, analysis the hardware and software design of control system and PID control strategy, this paper focuses on the eliminating method of the phase-shifting after the terminal voltage through passive filtering. The paper adopts Expert Intelligent System to realize the commutation, improves the A/D precision of DSP using the external reference voltage .the system could greatly simplify the structure of the hardware, and make the motor control more extremely stable.