Object Oriented Design Methodology as Applied to Persistence Manager Design

Asokan, Rajshri and Renukadevi, M (2000) Object Oriented Design Methodology as Applied to Persistence Manager Design. Technical Report. National Aerospace Laboratories, Bangalore, India.

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The Automatic Flight Control Computer (AFCC) processes many signals, which vary continuously. These signals are sampled by the sampler and later on converted by Analog to Digital Converter (ADC) to digital values for computation purposes. After computation, the Digital to Analog Converter converts the signal back to Analog values and feeds to the actuator to bring about the relevant changes. The signals have to be checked to see whether they are within the specified threshold limits so that they can be declared good. A tolerance limit is set for each signal to allow for continuous failure. This continuous failure is recorded in a counter called persistence counter. A signal may be beyond the threshold and this indicates a failure. The number of times a signal fails is recorded in the counter and this count is incremented or decremented or retained depending upon the declared state of signal. Depending upon the signal condition, it allows whether to readmit or not. Thus the Persistence Manager is basically a fail detect software which detects whether the signal is good, bad or failed.

Item Type: Monograph (Technical Report)
Uncontrolled Keywords: Object Oriented Methods;Object Model;Dynamic Model;Functional Model;Pseudocode;C++;Classes;Inheritance.
Subjects: ENGINEERING > Electronics and Electrical Engineering
Depositing User: Smt Bhagya Rekha KA
Date Deposited: 21 Apr 2006
Last Modified: 24 May 2010 04:10
URI: http://nal-ir.nal.res.in/id/eprint/1150

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