Modeling and accelerated CO2 control for photosynthesis measurements

Philip E. Pare, Justin McGrath, Berkley J. Walker, Carolyn L. Beck

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Measurements of the response of leaf photosynthesis to CO2 are vital for understanding the response of our planet to climate change and developing novel strategies for improving food production. The speed of these measurements are often limited by the ability of the leaf gas-exchange analysis instrumentation to reach and maintain a desired set point. This paper develops a biophysical model of a leaf and the measurement instrument that incorporates the plant physiology and the physics of gas flow in the instrument. This model is then parameterized for a commonly-used device for measuring photosynthesis of leaves. A standard feedback controller and a feedback linearization controller are applied to this model to reduce waiting time in these measurements. The model is validated by comparison to real measurement data from the instrument. The controllers are implemented on the actual instrument. The result is control algorithms built from firstorder principles governing the exchange of gas between a leaf and its environment. To the best of our knowledge, this is the first attempt at developing such algorithms for controlling CO2 in these systems.

Original languageEnglish (US)
Title of host publication1st Annual IEEE Conference on Control Technology and Applications, CCTA 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages523-528
Number of pages6
ISBN (Electronic)9781509021826
DOIs
StatePublished - Oct 6 2017
Event1st Annual IEEE Conference on Control Technology and Applications, CCTA 2017 - Kohala Coast, United States
Duration: Aug 27 2017Aug 30 2017

Publication series

Name1st Annual IEEE Conference on Control Technology and Applications, CCTA 2017
Volume2017-January

Other

Other1st Annual IEEE Conference on Control Technology and Applications, CCTA 2017
CountryUnited States
CityKohala Coast
Period8/27/178/30/17

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Hardware and Architecture
  • Software
  • Control and Systems Engineering

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