I’m trying to build a table top fatigue testing machine using stepper motors and lead screw type actuators. My immediate task is to control the stepper motor to achieve varying deflection amplitude (Moving the actuator up and down at varying displacement amplitude). I’d like to know whether we can achieve this task using stepper motor. If YES, I’d look forward to having some suggestions as to how to control the frequency of the stepper motors to achieve varying amplitude up and down motion.
Thanks in advance.