A Novel Digital Control Technique for Brushless DC Motor Drives: Conduction-Angle Control

Brushless DC (BLDC) motor drives are continually gaining popularity in motion control applications. Therefore, it is necessary to have a low cost, but effective BLDC motor speed/torque regulator. This paper introduces a novel concept for digital control of trapezoidal BLDC motors: Conduction-Angle Control. The controller is very simple to implement in a cost effective application-specific-integrated-circuit (ASIC). The controller design equations are derived from Newton's 2ndLaw. The novel controller is verified via computer simulations and an experimental demonstration is carried out with the rapid prototyping and real-time interface system, dSP ACE.