Model-Independent Observer-Based Current Sensorless Speed Servo Systems with Adaptive Feedback Gain

This study proposes a solution to the speed control problem of servo machines in form multi-loop current sensorless with reduction system model dependence level and number feedback loops, which provides two contributions: first, model-independent observer estimates acceleration using only position measurement, thereby ensuring first-order estimation error dynamics; second, active damping stabilizes inner loop adaptive gain increasing decreasing automatically according transient steady-state operation modes. The experimental highlighted effectiveness adaptation technique, used an actual comprising QUBE-servo2 myRIO-1900.