NDLI: Miniature rotating amplifier system for windtunnel application packs 256 pre-conditioning channels in 187 cubic inch

Content Provider	IEEE Xplore Digital Library
Author	Versteeg, M.H.J.B. Slot, H.
Copyright Year	1997
Description	Author affiliation: Nat. Aerosp. Lab., Amsterdam, Netherlands (Versteeg, M.H.J.B.)
Abstract	For a NASA windtunnel model NLR developed a 256 channel pressure sensor signal conditioning and amplifier system. This system was to be mounted within the rotating part of the model in a volume of 7 inch diameter and less than 6 inch long. The development of this system, called Rotating Amplifier System (RAS), required a close cooperation between electrical and mechanical designers to meet all customer requirements. For all 256 channels the bridge supply voltage, offset and gain are separately remote controllable to allow for adjustments during a running experiment. These configuration settings are loaded into the system using a dedicated serial link. For on-line calibration an R-Cal function is available with 3 separate resistor values. The mechanical construction of the RAS unit consists of a cylindrical unit that is mounted on the propeller shaft between gearbox and sliprings. The RAS unit is of modular design and consists 16 of identical modules, each containing 16 self contained amplifier channels, sensor power supplies and associated control logic. The amplifier system was realized using specially developed hybrid modules and packs the complete functionality in 187 cubic inch.
Starting Page	195
Ending Page	201
File Size	620897
Page Count	7
File Format	PDF
ISBN	0780341678
DOI	10.1109/ICIASF.1997.644681
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-09-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mechanical sensors NASA Sensor systems Bridge circuits Voltage control Calibration Resistors Propellers Shafts Power amplifiers
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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