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CircuitTool (a Test and Measurement Demo)

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CircuitTool (a Test and Measurement Demo)



07 Sep 2004 (Updated )

A demonstration test and measurement application with system identification.

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This case study demonstrates an application built to aid with developing numerical models of a device under test. This process, called System Identification, can be used to create accurate models of a system without having to mathematically characterize the complete system behavior. These models can then be used as the foundation of further design studies.
This demonstration integrates design tools (Signal Processing/System Identification) with test Tools (Instrument Control and Data Acquisition). The Instrument Control Toolbox is used to control a digital function generator to generate system input, while the Data Acquisition Toolbox acquires system response from the Windows Sound Card.
Note 1:
The odds of this demo running on your machine are slim, since it requires specific hardware. I hope that it gives you ideas of how to address some programming issues. For more information on acquiring data from data acquisition cards:

For more information on controlling and acquiring data directly from instruments:

Note 2: For more on this application, see the MATLAB Digest article I co-wrote:

Note 3: This demo can be run with either Signal Processing Toolbox or System Identification Toolbox. Email me if you want directions on how to switch.

Required Products Signal Processing Toolbox
Data Acquisition Toolbox
Instrument Control Toolbox
MATLAB release MATLAB 7 (R14)
Other requirements This requires an Agilent 33120A function generator. The demo also uses a custom device under test (a circuit), and enough cabling to wire everything up.
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12 Jan 2010

Updated description and copyrights.

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