Category Archives: Control Systems

Phil 7,11,19

7:00 – 4:30 ASRC GEOS

  • Ping Antonio – Done
  • Dissertation
    • More Bones in a Hut. Found the online version of the Hi-Lo chapter from BIC. Explaining why Hi-Lo is different from IPD.
  • More reaction wheel modeling
  • Get flight and hotel for July 30 trip – Done
  • So this is how you should install Panda3d and examples:
    • First, make sure that you have Python 3.7 (64 bit! The default is 32 bit). Make sure that your path environment points to this, and not any other 3.x versions that you’re hoarding on your machine.
    • pip install panda3d==1.10.3
    • Then download the installer and DON’T select the python 3.7 support: Panda3d_install
    • Finish the install and verify that the demos run (e.g. python \Panda3D-1.10.3-x64\samples\asteroids\main.py): asteroids
    • That’s it!
  • Discussed DARPA solicitation HR001119S0053 with Aaron. We know the field of study – logistics and supply chain, but BD has totally dropped the ball on deadlines and setting up any kind of relationship with the points of contact. We countered that we could write a paper and present at a venue to gain access and credibility that way.
    • There is a weekly XML from the FBO. Downloading this week’s to see if it’s easy to parse and search

Phil 10.17.18

7:00 – 4:00 Antonio Workshop

Phil 12.3.15

7:00 – 5:00 VTX

  • Learning: Genetic Algorithms
    • Rank space (probability is based on unsorted values??)
    • Simulated annealing – reducing step size.
    • Diversity rank (from the previous generation) plus fitness rank
  • Some more timing results. The view test (select count(*) from tn_view_network_items where network_id = 1) for the small network_1 is about the same as the pull for the large network_8, about .75 sec. The pull from the association table without the view is very fast – 0.01 for network_1 and 0.02 for network_8. So this should mean that a 1,000,000 item pull would take 1-2 seconds.
  • mysql> select count(*) from tn_associations where network_id = 1;
     11 
    1 row in set (0.01 sec)
    
    mysql> select count(*) from tn_associations where network_id = 8;
     10000 
    1 row in set (0.01 sec)
    
    mysql> select count(*) from tn_view_network_items where network_id = 8;
     10000 
    1 row in set (0.88 sec)
    
    mysql> select count(*) from tn_view_network_items where network_id = 1;
     11 
    1 row in set (0.71 sec)
  • Field trip to Wall NJ
    • Learned more about the project, started to put faces to names
    • Continued to look at DB engines for the derived DB. Discovered WebScaleSQL, which is a collaboration between Alibaba, Facebook, Google, LinkedIn, and Twitter to produce a big(!!) version of MySql.
    • More discussions with Aaron D. about control systems, which means I’m going to be leaning on my NIST work again.