Each of these gantries is driven by closed-loop servo motors and fancy ball screws, producing a total build volume of 77″x30″x20″. This open air version is printing in PLA.

Posted in Robots Hacks Tagged closed loop servo motors, digital servo, ds3225, hobby servo, optical encoder, robot arm, robotic arm, servo control, Servo driver, servo motor, servo motors, servos ...

The PD2-N can be operated in closed-loop mode. Through this field-oriented control with sine commutation, stepper motors run with real torque control, high precision and with low resonance.