Question: For a belt-driven printer mechanism, we will use a NEMA 17 stepper motor with a step angle of 1.8 with full-step drive. Our initial

For a belt-driven printer mechanism, we will use a NEMA 17 stepper motor with a step angle of 1.8 with

For a belt-driven printer mechanism, we will use a NEMA 17 stepper motor with a step angle of 1.8 with full-step drive. Our initial selection is the Minebea K053B with a 24 Volt supply and a chopper driver set to 1.2 A. An expensive DC Servomotor is used during system development to run the exact desired velocity profile for the print head. The DC motor has a torque constant of 42 mNM/A. a. We measure the average steady-state current of 3.0 A during the print operation. What is the maximum safe speed for the selected stepper to be used for production? Please provide your answer in both Steps/s and rpm. b. The DC Servo also measures a peak acceleration current of 4 A. With the existing mechanism, the print speed is set at 300 Steps/s at the driving motor. Can the selected stepper system be directly commanded to start at the desired speed?

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