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The cryogenic separation process is an air separation technology which is used to produce specific components of the air in gases or liquid form with high purity. This technology is frequently used in liquified natural gas (LNG) industries, nuclear isotopes separation and cryogenic fuels production for space shuttle. This paper proposes an optimal control design method for a nonlinear model of a cryogenic...
A cyber-physical system (CPS) typically utilizes networks of computers and communication systems to automatically monitor and manage the interactions and data exchanges between plant, sensor, controller and actuator elements within the CPS. The design and implementation of such a CPS are particularly challenging due to their requirements of high reliability and resiliency to possible components' failure...
This paper discusses an experiment-based approach to teaching intelligent control methodologies for students conducted at the Engineering Physics Department, Institut Teknologi Bandung, Indonesia. The teaching process conducted in the form of student final project involving several tasks, i.e. plant analysis and modeling, building up intelligent control structures for on-line purposes, implementing...
This paper investigates the computational complexity involved when using Handelman relaxation method for solving multivariable polynomial optimization problems. In particular, the relationship between the degree of the Handelman representation of non-negative polynomial function over convex polytopic set and the number of decision variables required to prove its existence through linear programming...
This paper proposes an alternative solution to overcome the difficulties in measuring the primary variable of a stripper unit in a fertilizer plant using Adaptive Neuro-Fuzzy Inference System (ANFIS) technique. Inferential measurement is a method to predict the value of the primary variable of the model generated by the input-output relationships of the process affecting the primary variable the process...
A design approach of a direct supervisory adaptive fuzzy controller applied to pH control of a neutralization process is presented in this paper. Structure and designs of the controller using this approach will be briefly discussed, which includes fuzzy controller comprising a number of fuzzy systems constructed from the control knowledge as well as a supervisory scheme which will monitor the systems...
This paper is concerned with a development of an alternative ratio control method using adaptive neuro-fuzzy approach and its implementation to control steam-gas ratio of primary reformer in a petrochemical plant in Gresik, Indonesia. Ratio control is used to ensure that two flows, i.e steam and gas, are kept at the same ratio even if the flows are changed. Adaptive neuro-fuzzy approach is implemented...
This paper describe a development of rice milling degree measurement system based on color analysis of rice sample. Rice Milling Degree is usually defined as the extent to which the bran layers of rice have been removed during the milling process. In Indonesia, rice quality is measured based on National Standard of Indonesia (SNI) of Milled Rice. Rice quality contains 11 variables resulting 5 categorizations...
Fish finders have already been widely available in the fishing market for a number of years. However, the sizes of these fish finders are too big and their prices are expensive to suit for the research of robotic fish or mini-submarine. The goal of this research is to propose a low-cost fish detector and classifier which suits for underwater robot or submarine as a proximity sensor. With some pre-condition...
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