Universiti Teknologi Malaysia Institutional Repository

Identification and modeling of environment climates inside naturally ventilated tropical greenhouse

Ahmad, Robiah and Abd. Rahim, Abd. Rahman and Hussein, Mohamed and M. Samsuri, Saiful Farhan (2010) Identification and modeling of environment climates inside naturally ventilated tropical greenhouse. In: Asia Modelling Symposium 2010 (AMS 2010), 2-6 May 2010, Kota Kinabalu, Sabah.

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Abstract

This paper focuses on modeling and identification of environmental climates inside naturally ventilated tropical greenhouse (NVTG). The NVTG climate model is an essential tool for developing the climate control system. A real-time wireless monitoring system for measuring prototyped NVTG environmental climates for chili plantation was developed. The variables to estimate the NVTG outputs variables namely internal relative humidity and internal temperature are external temperature, external humidity, irradiance, and wind speed. Modeling based on mathematical equation as well as using system identification (SI) technique is outlined. The paper also highlights on SI procedure namely data acquisition, identified model structure that represents NVTG using NARX and ARX model structures, parameter estimation technique, and model validation. Simulation studies reveal that linear and nonlinear polynomial models are able to model and simulate the NVTG performance.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:fertigation, mixing fertilizer, nutrient solution, time-based irrigation
Subjects:T Technology > TJ Mechanical engineering and machinery
Divisions:Mechanical Engineering
ID Code:24019
Deposited By: Liza Porijo
Deposited On:20 Jun 2012 04:52
Last Modified:20 Jun 2012 04:52

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