August 28, 2013: Configuration. Set pressure relief valve to 1.875 turns CCW from all the way in. August 29, 2013: Configuration. Set Spring pressures. Aug 30, 13:33:00 - Buoy on dock, cleared data/ directory and restarted computer. Started ntp on buoy to set clock which was years out of date. Sep 3, ~13:00:00 - Deployed Buoy from Shana Rae. 1.3L oil reservoir is 92% full. Sept 3, 16:00:00 - Put system in gain scheduled mode targetsigma = 4 minscalefactor = .6 maxscalefactor = 1.2 integralgain = .0001 integralinterval = 300 fudge factor = 0.6 Sept 4, ~1:00 - Travelled to the buoy in the Paragon to investigate why the system was no longer charging the batteries. Telemetry indicated that the converters were working but that perhaps the current limiter wasn't. Probing a few signals in the box indicated that was true and the FET modules were not getting a command to draw current, but that the upstairs PTO controller was putting out a PWM signal. We removed the control boards and on shore found that a capacitor had failed nearly shorted, bringing down a voltage reference and making the board output no signal. That capacitor was meant to be a 25V part in a 15V circuit, so perhaps the wrong part was stuffed, they aren't marked so it's impossible to know. Tomorrow we will reinstall the fixed boards and presumably the batteries will start charging again. The worrisome thing is that the load dump itself uses the same control board, if it fails in a similar manner the load dump won't draw any current, the system will be unloaded and the voltages will get VERY high. Nothing to do about it now though. Until we reinstall the boards the system will remain in safe mode. Sept 5, ~9:00 - Travelled to the buoy to re-install the current limit control board. Done succesfully and the system is out of safe-mode and charging the batteries. We also checked the other boxes and they were all dry inside. Sept 12, 11:35 - Due to very calm seas over this week, the battery voltage dropped below 21V last night and the low-voltage disconnect shut down the system. This morning the battery voltage came up above 22V and it turned back on. It is still very calm so the battery voltage is dropping again and this will probably cycle like this until the sea-state picks up. The reset system is working as designed, one note is that when the system comes back up it defaults to resistive loading mode with scale factor of .8. A future feature would be to make the mode and settings persistent through a power-cycle, but it's not a big deal. Each cycle causes a new Rxxxxx directory to be created, this isn't an issue but at the moment the shore-side filesystems need to have new R directories created by hand. If it goes on too long I'll automate this so the shore-side processing doesn't crash due to power cycling. Sept 12, 11:55:00 - Put system in gain scheduled mode targetsigma = 4 minscalefactor = .5 maxscalefactor = 1.2 integralgain = .0001 integralinterval = 300 fudge factor = 0.6 Sept 13, 11:30:00 - Put system in gain scheduled mode after power-up. targetsigma = 4 minscalefactor = .5 maxscalefactor = 1.2 integralgain = .0001 integralinterval = 300 fudge factor = 0.6 Sept 26th: The buoy has been dragging it's anchor over the past couple of afternoons which have been very windy. Today we went out in the Paragon and attempted to add a second anchor by grappling up the existing one. We ended up grappling the wire between the anchor chain and plate, and dropped it in the transfer off the grapple hook at the last possible moment before adding an anchor on a loop of chain around the wire. That process appeared to be pretty hard on the wire, bending it hard over the grapple hook and ultimately stripping the jacket off. Sept 27th: Did a dive inspection today and found one of the four plate bridle legs broken, but the plate sitting flat anyway. Corrosion not severe. Oil compensator reservoir now at about 70% full. Sept 27th: 15:15. Changed fudge factor from 0.6 to 0.5 based on dive information that the cable is spending a lot of time slack. Oct 8th: Sometime in the early morning the piston mostly stopped moving. Simultaneous with that the load cell peaks diminished dramatically, but the average stayed about the same. There is a couple of inches of piston movement, and nearly no power generation. Oct 8th 10:00. Changing the scale factor to a very low number (0.2) to see if the piston starts moving again. This change was done in the middle of D000599 in R000006. Oct 8th 10:30. Changing the scale factor to 0.2 had only a very small effect, the piston motions did expand slightly, but not much. Setting the system back to gain scheduled mode and setting the minscalefactor to 0.2 to encourage the piston to move as much as possible. targetsigma = 4 minscalefactor = .1 maxscalefactor = 1.2 integralgain = .0001 integralinterval = 300 fudge factor = 0.6 Oct 16 ~12:00. Buoy Recovered by Shana Rae Oct 16 16:00. Post Deployment efficiency tests performed.