Re: Motion control with AC VFD inverter drive and encoder? (Theory)
Most high end VFD's, have the option of encoder feedback for precise control in place of the second best solution, Sensor-less vector type.
In commercial CNC machines, the encoder on the final spindle shaft goes to the controller, not the VFD as the Z axis is geared off of this encoder for precise sync control.
Al.
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.