I have a question regarding the types of motors that were used on the Martian rovers, specifically the Mars Exploration Rovers and Curiosity.
I am wondering about the main 6 motors that turn the wheels, so the rover can move forward or backwards, and the 4 motors that turn the outer wheels around their axes, so the rover is maneuverable.
I am pretty sure they used DC motors for both types of motors, but did they use brushed or brushless motors, and what specifications did those motors have? How did they make the motors have such a low RPM, and can they control the speed and motion of every motor's torque, voltage, current, etc.?