Help Identify IC's

Discussion in 'Electronics Resources' started by Capt. Rob, Mar 22, 2015.

  1. Capt. Rob

    Thread Starter New Member

    Mar 22, 2015
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    I have an autopilot project and need your help in identifying the two IC’s and who the manufactures are, in order to find a data-sheet on their usage! Any information would be helpful. Thanks, Rob :eek: chip1.jpg Chip2.jpg
     
  2. ericgibbs

    Senior Member

    Jan 29, 2010
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    hi,
    Two data-sheets for these devices.
    E
     
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  3. praondevou

    AAC Fanatic!

    Jul 9, 2011
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  4. praondevou

    AAC Fanatic!

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    Anyway the ones you posted seem to be Harris semiconductor which is now TI.
     
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  5. jpanhalt

    AAC Fanatic!

    Jan 18, 2008
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    Is the autopilot from an airplane? I presume it is and agree on the answers. I suspect that autopilot is >10 years old, probably >30 years old. Is this repair being made by a certified avionics repair station?

    John
     
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  6. Capt. Rob

    Thread Starter New Member

    Mar 22, 2015
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    It is going to be used with the autopilot from my boat. I will post my progress as time goes on! Currently I have gathered up a step-servo motor, fluxgate and processor. I'm guessing around 1989 for the date. Thank You All for your input here! Rob ;)
     
  7. Capt. Rob

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    Mar 22, 2015
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    Thanks so much!
     
  8. jpanhalt

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    Now I can sleep at night. ;)

    Sounds like a neat application. Here is an application note from Microchip you might find interesting: http://ww1.microchip.com/downloads/en/AppNotes/00996a.pdf

    John
     
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  9. MaxHeadRoom

    Expert

    Jul 18, 2013
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    Interestingly the PID method of servo control originated in designing auto pilot for a boat, this was done by studying the Helmsman and details on how the corrections were made manually to formulate the PID loop we know.
    Max.
     
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  10. Capt. Rob

    Thread Starter New Member

    Mar 22, 2015
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    Thanks for the info Max! This is true! Being that I was in the control industry myself for 20 some odd years, I perfectly understand your thinking! Corrective actions are easy to manage, however, the reactions of PID loop must be adjusted during the timing oddly to a constant changing set point. ie. the vessels GPS or navigational system. Not trying to reinvent the wheel but to better understand Motion control with Longitude and Latitude having an effect on reaction timing of a PID loop. Thanks again for you share of knowledge. Regards, Rob
     
  11. Capt. Rob

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    Mar 22, 2015
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    Yes John Very Nice! Will take a look-see. Thanks again for your support and help!
    Best Regards, Rob
     
  12. Capt. Rob

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    Mar 22, 2015
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  13. praondevou

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    Jul 9, 2011
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    It's in the first link
     
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  14. Capt. Rob

    Thread Starter New Member

    Mar 22, 2015
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    Got it.. Thanks soo much! Rob
     
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