4.2 Auxiliary Track Positioning System

4.2.1 Testing Procedure

 The setup for the auxiliary track positioning system testing had two steps. First, the

maximum and minimum values returned to the system by the Draw Wire Transducer

(DWT) were obtained. These values are used in conjunction with Equation 2-1 to

convert the measured DWT value to an angular measurement. The maximum value

occurs when the auxiliary track has been rotated to its topmost point, while the minimum

value occurs when the auxiliary track has been rotated to its bottommost point; these

points correspond to 150 degrees and 0 degrees, respectively. At each of these two

points, one hundred values of the DWT were taken and then an average value was

obtained.


Figure 4-4: Plumb compass attached to Andros auxiliary track