One purpose of lower body negative pressure (LBNP) chambers is to simulate the transition from microgravity to Earth-gravity. Physiological tests are conducted to assess stresses upon the cardiovascular system during these simulations. In general, the internal negative air-pressure of LBNP chambers is controlled with a proportional control system using only air-pressure as input. This can lead to an uncomfortable environment for the test subject. The proposed LBNP chamber uses a proportional integral derivative control program, which uses temperature, humidity and airflow in addition to the traditional air-pressure as inputs. These proposed additional parameters would serve to better control the internal environment of the LBNP chamber.


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    Title :

    Development of a micro-controller interface and proportional-integral-derivative control program for a lower body negative pressure chamber using various environmental variables as control inputs


    Additional title:

    Entwicklung einer Mikrocontroller-Schnittstelle und eines PID-Regelungsprogramms für eine Unterdruckkammer unter Verwendung verschiedener Umgebungsvariabler als Regelungseingabegrößen




    Publication date :

    2004


    Size :

    5 Seiten, 5 Quellen



    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English





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