Sunday, August 29, 2010
Friday, July 9, 2010
Wednesday, July 7, 2010
Last Friday we managed to fry all four of our thrusters and we have no idea how it happened. We came in Friday morning after I-Day for the class of 2014, we planed to take the vehicle to the pool that morning so we tried to conduct a brief test in the lab before heading to the pool. Upon discovering that some of the thrusters where not working properly, so we began trouble shooting. In the process of trouble shooting we managed to create a large spark. We have no idea how it happened but for the rest of Friday and all of Tuesday we tried to find what caused the problem. By the end of the day we found that we had damaged the D2A board and after replacing that everything work fine. We have had to replace all of the thrusters, find a leak, and fix the leak. Today we have managed to tweak our heading control and conduct waypoint driving all without our camera box because it is currently in the machine shop or our vertical thrusters (we only had 3 spare thrusters).
Tomorrow we start packing in order to have the vehicle and everything we need in San Diego when we show up so we can hit the ground running in San Diego.
Posted by S. Jeannet at 5:09 PM
Tuesday, June 29, 2010
Today was the first day the entire team took the AUV down to conduct some tests in the pool. We took the AUV to the diving well in Lejeune Hall to tweak the gains on the controllers. You can see from the graph that the initial gains caused the vehicle to be unstable, but for the second test we changed the gains and it worked well even with a disturbance. We also worked on the heading and pitch controllers. Although they aren't quite where we want them for competition, we have been able to make significant improvements. Today was very productive but we won't work much for the next two days because we have been loaned out to help with I-Day here at the Academy. Come friday and next week we will be in full swing.
Posted by S. Jeannet at 4:37 PM
Thursday, June 24, 2010
USNA is getting ready for the 2010 AUVSI. We've got only 4 team members this year and our project adviser is still CAPT Jack. Team Captain is 2ndLT Joseph Jennett, with 2ndLT Kevin Fleischer working with the cameras. ENS Harry Davis and MIDN 1/C Paul Schouppner are working on the programs. So far this year we have changed out the DVL, redesigned the power supply, rewritten the code, and created some new circuit boards that replace two old circuit boards. We also had to fix the tail of the frame that held the aft thruster on after it broke earlier this year.
Starting next week, for the first time this summer, the entire team will be here working on the vehicle at the same time. We've all got different schedules and other things we have to do, but for the next couple of week everything will be about winning the 2010 AUVSI....
Posted by S. Jeannet at 8:46 AM