I have a mobile base (1400x1800x400 mm) which has a vertical bar (1) mounted on its geometric center; this vertical bar has a length of 2500 mm and a diameter of 100 mm and I need to keep it always in its vertical position even if the mobile base is not correctly aligned as showed in the attached photo.
I use an inertial sensor to read the bar position. I was thinking to use four electric linear actuators, but this could not be a good idea because they would be hard to control (if they are not perfectly synchronized, they can get stuck or broken very easily). What about stepper motors? I would like to implement something like the system used on the 3-axis gimbal. Do you think there is any commercial solution I can use?