Composite Fuzzy Control Method for Temperature in Intelligent Moisture Analyzer

Jing Ling; Jin Che; Da Ming Liu

doi:10.4028/www.scientific.net/AMM.401-403.1010

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 401-403Composite Fuzzy Control Method for Temperature in...

Composite Fuzzy Control Method for Temperature in Intelligent Moisture Analyzer

Abstract:

Temperature control system of infrared heating oven in moisture analyzer is characteristic of nonlinear, time-varying and time-lag. A composite fuzzy control (CFC) method is proposed, which combines improved Bang-Bang control with two-stage intelligent fuzzy control. The control algorithm is implemented by MSP430F5438. When the temperature error e between the desired temperature and actual temperature in heating oven is larger than threshold value, the improved Bang-Bang controller is employed in rapidly reducing the error; to decrease the system overshoot, the basic fuzzy controller is used; to reduce the steady-state error of basic fuzzy controller, the auxiliary fuzzy controller is applied. The steady-state error of improved fuzzy controller for oven temperature is less than 0.5°C, which is better than the Chinese National Standards for moisture content measurement.

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Periodical:

Applied Mechanics and Materials (Volumes 401-403)

Pages:

1010-1013

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.401-403.1010

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Online since:

September 2013

Authors:

Jing Ling, Jin Che, Da Ming Liu

Keywords:

Bang-Bang Control, Fuzzy Control, Moisture Analyzer, Temperature Control

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