I want to provide a gradual increase in force provided to a piston (perhaps 0-100N over the space of a couple of seconds maximum), up till the point it begins moving, and then drive it to a varying speed after that.
I was thinking of using a linear actuator and applying a variable voltage to control the speed and force, but apparently using such motors in stall like this is generally a bad idea due to burning out the coils. However stepper motors and solenoid actuators are both designed for holding loads in place while applying a certain torque - would a stepper motor be able to do this without damage? Or could a solenoid actuator provide the gradual force increase in stall, and then the rest of the movement be accomplished using a seperate motor?
Many thanks in advance