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The minimal time detection algorithmAn aerospace vehicle may operate throughout a wide range of flight environmental conditions that affect its dynamic characteristics. Even when the control design incorporates a degree of robustness, system parameters may drift enough to cause its performance to degrade below an acceptable level. The object of this paper is to develop a change detection algorithm so that we can build a highly adaptive control system applicable to aircraft systems. The idea is to detect system changes with minimal time delay. The algorithm developed is called Minimal Time-Change Detection Algorithm (MT-CDA) which detects the instant of change as quickly as possible with false-alarm probability below a certain specified level. Simulation results for the aircraft lateral motion with a known or unknown change in control gain matrices, in the presence of doublet input, indicate that the algorithm works fairly well as theory indicates though there is a difficulty in deciding the exact amount of change in some situations. One of MT-CDA distinguishing properties is that detection delay of MT-CDA is superior to that of Whiteness Test.
Document ID
19960008823
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Kim, Sungwan (California Univ. Los Angeles, CA, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1995
Subject Category
Computer Programming And Software
Report/Patent Number
NAS 1.26:199324
NASA-CR-199324
Accession Number
96N15989
Funding Number(s)
CONTRACT_GRANT: NCC2-374
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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