Show simple item record

dc.contributor.advisorCristi, Roberto
dc.contributor.authorMathers, Bruce H.
dc.dateDecember 1992
dc.date.accessioned2012-11-29T16:18:38Z
dc.date.available2012-11-29T16:18:38Z
dc.date.issued1992-12
dc.identifier.urihttp://hdl.handle.net/10945/23950
dc.descriptionApproved for public release; distribution is unlimiteden_US
dc.description.abstractThe objective of this research is to develop a mathematical model and control algorithm for the maintenance of the environmental system within the Controlled Environment Research Chamber (CERC) located at the National Aeronautics and Space Administration (NASA) Ames Research Center, Moffett Field, CA. The hypobaric research chamber is currently undergoing renovation as part of the Human Exploration Development Project (HEDP), an effort on behalf of NASA for advanced life support research. A broad overview of the chamber is provided which includes a physical description, preliminary system hardware and associated performance, and potential experimental uses. A mathematical model of the chamber air mass has been developed based on key energy and mass balances. Two methods of adaptive control have been implemented for the coupled control of temperature, oxygen concentration, pressure and humidity within the closed environment. Simulation testing algorithms performance have been conducted, including a step and modified ramp response. The results of the simulations indicate the adaptive methods performed well for the model presented. Further research is required in refining the chamber model for algorithm optimization and validation including the integrated of selected hardware dynamics.en_US
dc.description.urihttp://archive.org/details/mathematicalmode00math
dc.format.extent120 p.en_US
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. As such, it is in the public domain, and under the provisions of Title 17, United States Code, Section 105, may not be copyrighted.en_US
dc.titleMathematical modeling and control law development for the atmospheric monitoring and control system of the Controlled Environmental Research Chamber (CERC) at NASA Ames Research Centeren_US
dc.typeThesisen_US
dc.contributor.secondreaderRoss, I. Michael
dc.contributor.corporateNaval Postgraduate School
dc.contributor.departmentDepartment of Aeronautical and Astronautical Engineering
dc.subject.authorControlen_US
dc.subject.authorAdaptive controlen_US
dc.subject.authorEnvironment chambersen_US
dc.subject.authorHypobaric chambersen_US
dc.subject.authorNonlinear systemsen_US
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameM.S. in Astronautical Engineeringen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineAstronautical Engineeringen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record