Sensorless Speed Controlled Brushless D Drive Using TMS320C242 DSP Controller

Texas Instruments

Published Date: 11/20/1998


The Brushless DC (BLDC) variable-speed drive is widely used because of its particularly high mechanical power density simplicity and cost effectiveness. A software rotor position generation has been implemented on the DSP Controller family thus saving the mechanical position sensor cost. Based on the non-fed phase back electromotive force measurement this software-computed rotor position is fu