Journal of Instrumentation Technology
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Journal of Instrumentation Technology. 2014, 2(1), 9-16
DOI: 10.12691/jit-2-1-3
Open AccessArticle

The Design of Robust Soft Sensor Using ANFIS Network

Hamed Hosseini1, , Mehdi Shahbazian1 and Mohammad Ali Takassi2

1Department of Instrumentation and Automation engineering, Petroleum University of Technology, Ahvaz, Iran

2Department of Basic Sciences, Petroleum University of Technology, Ahvaz, Iran

Pub. Date: June 04, 2014

Cite this paper:
Hamed Hosseini, Mehdi Shahbazian and Mohammad Ali Takassi. The Design of Robust Soft Sensor Using ANFIS Network. Journal of Instrumentation Technology. 2014; 2(1):9-16. doi: 10.12691/jit-2-1-3

Abstract

A soft Sensor is a model which is used to estimate the unmeasurable output of an industrial process. Designing a soft sensor is usually difficult because its modeling is often based on case data. These data commonly contain the outliers and noise as soft sensor design is been problem. In order to solve the problem and successfully design a soft sensor, this paper introduces a new approach for designing a robust soft sensor which is not affected by outliers especially batch outlier and long tail noise. To response this goal, a robust soft sensor based on Adaptive Neuro-Fuzzy Inference System (ANFIS) which is based on robust cost function such as the summation of the absolute cost function. To minimize the cost function the particle swarm optimization (PSO) algorithm was used. The subtractive clustering technique was used to determine the ANFIS structure. The proposed method for designing a soft sensor is implemented on a chemical plant and compared with soft sensor based on ANFIS which is based on quadratic cost function. The simulation result shows higher accuracy in prediction of output variable in new robust soft sensor.

Keywords:
soft sensor ANFIS particle swarm optimization robust cost function outlier noise

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