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Torque Sharing
Torque Sharing

 ORMEC is pleased to announce the Torque Sharing feature with SMLC and ServoWire® drives. 
 
Originally developed for the NASA’s Vehicle Stabilizer Test Fixture program awarded to ORMEC in 2015, Torque Sharing allows the user to drive a single axis with multiple servo motors, only limited by the axes available on the SMLC.
 
Torque Sharing can be used to prevent misalignment on a Gantry Machine.  Attaching two servo motors to drive both columns of the X-Axis in a Torque Sharing master/slave axis configuration keeps both columns in-sync while preventing misalignment.
 
Also, as the Torque Sharing name implies, the required torque for each servo motor is half the required torque for the axis.  If the X-Axis requires 400 in-lb’s to meet the performance criteria, then two 200 in-lb’s motors can be used. 

Figure 1:  Gantry Machine with two motors driving X-Axes


Torque Sharing is also not limited to linear axis, but can be used on rotary axis, such as controlling the winding and unwinding of a large spool.  Now large spools can be tightly controlled with two Servo Motors sharing the torque.


Figure 2:  UnWind/ReWind Section of a large spool controlled by two servo motors.
 

Torque Sharing is also not limited to two servo motors.  As shown in figure 3, 3-servo motors are used to share the load on two different axes.  The Torque Sharing feature is only limited by the total amount of available ServoWire® axes on the SMLC.  



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