Multi-closed-loop feedback control system for laser cutter

The invention relates to a multi-closed-loop feedback control system for a laser cutter and belongs to the field of computer digital control application. By combining a current loop, a velocity loop and a position loop in the feedback control technique, a multi-closed-loop feedback control system such as a current-loop-velocity-loop-position-loop feedback control system, a current-loop-velocity-loop feedback control system, a velocity loop-position loop feedback control system or a current loop-position loop feedback control system can be formed. The feedback control system and a servo motor of the laser cutter are optimally configured. The usage proves that the multi-closed-loop feedback control technique can be used for obviously increasing the stability, rapidity and accuracy of the servo motor control system and can be used for improving the output characteristics of the open-loop control, semi-closed loop control and single closed-loop control system.