Motor position Specifications Analysis chart
Items rated 1-5
| Criteria | Motor Position Alternate Solution #1  | Motor Position Alternate Solution #2  |
| Manufacturability | 5 | 5 |
| Forward/reverse motion | 5 | 5 |
| Up/down motion | 3 | 5 |
| Left/right motion | 5 | 2 |
| Speed in all directions | 4 | 4 |
| Maneuverability | 5 | 3 |
| Precision | 5 | 3 |
| Total Points | 32 | 27 |
When designing the motor layout of the positions of the motors for the ROV, it is important to rate each solution on the following criteria: manufacturability, forward/reverse motion, up/down motion, left/right motion, speed in all directions, maneuverability, and precision.
Manufacturability
Manufacturability for this project means; will a design be possible to put on an ROV. Motor position alternate solution#1 is definitely able to be manufactured, and so is motor position alternate solution #2. Both of these designs have the ability to be mounted to an ROV that another group member will make. Thus, both of these designs receive a 5 for manufacturability.
Forward/reverse motion
The forward and reverse motion of the designs presented above have the same concept. This concept is two motors on the sides of the ROV. This is the best way to move in forward and reverse, and both of the designs have the motors on the sides. That is why both designs received a 5 for this category.
Up/down motion
Up and down motion of the ROV depends on the motor(s) facing the vertical axis. Motor position alternate solution #2 has the clear advantage in this field of criteria. This is because position alternate solution #2 has two motors on the vertical axis while motor position alternate solution #1 has one motor on the vertical axis.
Left/right motion
Motor position alternate solution #1 has the advantage in this field of criteria since there is a motor on the top of the ROV placed perpendicular to the ROV if the ROV was in a forward facing position. Unlike motor position alternate solution #1, motor position alternate solution #2 does not have this left/right motion motor. This means that the ROV, if using motor position alternate solution #2, must change orientation, move forward, then change orientation again, instead of just moving to the position using left/right motion.
Speed in all directions
Both motors in this field of criteria received a score of 5. This is because each motor position alternate solution has flaws. Motor position alternate solution #1 has an advantage in left/right motion while motor position alternate solution #2 has an advantage in up/down motion. Neither of the motor position alternate solutions is perfect and that is due to a lack of resources.
Maneuverability
Motor position alternate solution #1 has the clear advantage in this field of criteria because it has a motor capable of propelling the ROV in a left/right motion. This motor makes the ROV more maneuverable because, the amount of directions the ROV can travel is increased. Motor position alternate solution #2 does not have this motor, however, it is maneuverable, so it gets a score of 3 out of 5.
Precision
This field has the same scores as the maneuverability field. This is because motor position alternate solution #1 also has the advantage in precision. The left/right motor really allows the ROV to move slightly to the left or right. Using motor position alternate solution #2, the ROV does not have the ability to move very small distances to the left and right since it must turn first, travel forward or backwards, and then turn again.
Conclusion and final decision using total points scored
Motor position alternate solution #1 will be the motor position solution for the ROV. Firstly, this is because it scored the highest on the specifications analysis chart. Also, precision and maneuverability are key parts in this competition. Speed and acceleration are very important as well, however, speed and acceleration come second to precision and maneuverability. This is why motor position alternate solution #2 is now ruled out.
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