Self-Adjusting Flight Electronics (SAFE)

Thomas P. Caudell; I. David Levy

doi:10.1117/12.936537

6 November 1986 Self-Adjusting Flight Electronics (SAFE)

Thomas P. Caudell, I. David Levy

Proceedings Volume 0686, Infrared Detectors, Sensors, and Focal Plane Arrays; (1986) https://doi.org/10.1117/12.936537
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

Expert system techniques have been applied to a parameter adjustment problem of practical importance. Charge-coupled device (CCD) technology is being pushed to the limits in new flight electronics systems. These complex, solid-state devices require continuous adjustment and monitoring to maintain near optimal performance. Although human experts can make the sensitive adjustments needed, to have them do so is neither feasible nor cost effective. Each CCD array has nearly 30 analog inputs that control its behavior. A simple expert system has been written that performs the adjustments to bring the CCD to near optimal performance with respect to three CCD parameters: (1) bucket capacity, (2) charge transfer efficiency, and (3) noise. The system is written in FORTRAN and runs on an IBM XT, interfaced with an HP1000 computer. The second machine actually controls the analog hardware, which, in turn, interfaces with the CCD. The knowledge of device physics has been captured in the form of facts. The heuristic knowledge of adjustment order and magnitude has been represented in the form of rules. Weekly meetings over a 3-month period between the experts and the knowledge engineer supplied the necessary knowledge. The current system improves the CCD array to a higher level than that achievable by the human expert, and in considerably less time.

Citation Download Citation

Thomas P. Caudell and I. David Levy "Self-Adjusting Flight Electronics (SAFE)", Proc. SPIE 0686, Infrared Detectors, Sensors, and Focal Plane Arrays, (6 November 1986); https://doi.org/10.1117/12.936537

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Charge-coupled devices

Electronics

Clocks

Artificial intelligence

Infrared detectors

Infrared sensors

Sensors

Show All Keywords

Keywords/Phrases

Search In:

Publication Years