Accession Number:

ADA193863

Title:

Optimal Sensor Locations for System Identification

Descriptive Note:

Final rept. 6 Feb 86-6 Aug 87,

Corporate Author:

SOUTHEASTERN CENTER FOR ELECTRICAL ENGINEERING EDUCATION INC ST CLOUD FL

Personal Author(s):

• Udwadia, Firdaus E.

Report Date:

1988-03-01

Pagination or Media Count:

196.0

Abstract:

This report deals with four major topics which impact, in a substantive manner, our ability to identify large, spatially extended structural systems in space with modest resources. A The first topic studies the uniqueness in the identification of a cantilever, boom-type structural system which is modelled by finite elements and is subjected to a base motion. B The second topic deals with the development of a methodology for optimally placing sensors in a large spatially extended structural system so that data collected from those locations would yield maximum information about the parameters to be identified. A preliminary methodology applicable to systems that can be adequately described by a set of ordinary differential equations has been developed and validated. C The third topic deals more directly with experimental design. It aims at tailoring the measurement stream to minimize data handling and processing related to system identification. D The fourth topic deals with an analysis of the tradeoffs between control and identification. The duality of the concepts of identification and control are studied in a quantitative manner and an illustrative example is shown amplifying the analytical results.

Descriptors:

• *DETECTORS
• *STRUCTURAL PROPERTIES
• *FINITE ELEMENT ANALYSIS
• *IDENTIFICATION
• EXPERIMENTAL DESIGN
• STRUCTURES
• MOTION
• DIFFERENTIAL EQUATIONS
• TRADE OFF ANALYSIS
• STREAMS
• OPTIMIZATION
• POSITION(LOCATION)
• BOOMS(EQUIPMENT)
• DATA PROCESSING
• MEASUREMENT

Subject Categories:

• Target Direction, Range and Position Finding
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE