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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Makara Journal of Technology
Aries Subiantoro
Electrical Engineering Department, Faculty Of Engineering University Of Indonesia, Depok 16424, Indonesia
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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Journal : Makara Journal of Technology

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Modeling of Coupled-Tank System Using Fuzzy Takagi-Sugeno Model Subiantoro, Aries
Makara Journal of Technology Vol. 10, No. 1
Publisher : UI Scholars Hub

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Modeling of Coupled-Tank System Using Fuzzy Takagi-Sugeno Model. This paper describes modeling of coupledtank system based on data measurement using fuzzy Takagi-Sugeno model. The fuzzy clustering method of Gustafson- Kessel algorithm is used to classify input-output data into several clusters based on distance similarity of a member of input-output data from center of cluster. The formed clusters are projected orthonormally into each linguistic variables of premise part to determine membership function of fuzzy Takagi-Sugeno model. By estimating data in each cluster, the consequent parameters of fuzzy Takagi-Sugeno model are calculated using weighted least-squares method. The resulted fuzzy Takagi-Sugeno model is validated by using model performance parameters variance-accounted-for (VAF) and root mean square (RMS) as performance indicators. The simulation results show that the fuzzy Takagi-Sugeno model is able to mimic nonlinear characteristic of coupled-tank system with good value of model performance indicators.
Modeling of a New Structure of Precision Air Conditioning System Using Secondary Condenser for Rh Regulation Subiantoro, Aries; Nasruddin, Nasruddin; Yusivar, Feri; Al-Hamid, Muhammad Idrus; Budiardjo, Bagio
Makara Journal of Technology Vol. 16, No. 1
Publisher : UI Scholars Hub

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A dynamic mathematical model for a new structure of precision air conditioning (PAC) has been developed. The proposed PAC uses an additional secondary condenser for relative humidity regulation compared to a basic refrigeration system. The work mechanism for this system and a vapour-compression cycle process of the system are illustrated using psychrometric chart and pressure-enthalpy diagram. A non-linear system model is derived based on the conservation of mass and energy balance principles and then linearized at steady state operating point for developing a 8th-order state space model suited for multivariable controller design. The quality of linearized model is analyzed in terms of transient response, controllability, observability, and interaction between input-output variables. The developed model is verified through simulation showing its ability for imitating the nonlinear behavior and the interaction of input-output variables.
Co-Authors Abdul Halim Al-Hamid, Muhammad Idrus Bagio Budiardjo Bagio Budiardjo Benyamin Kusumoputro Feri Yusivar Feri Yusivar HAQQI, MUHAMMAD SABILA Heri Sutanto Muhammad Al-Hamid Muhammad Al-Hamid, Muhammad Nanda Avianto Wicaksono Nasruddin Nasruddin Nasruddin Nasruddin Ramadhan, Agung Rian Suryadiningrat Ridwan Gunawan Ridwan Gunawan RIZKI, MUHAMMAD AFIFF SYAMAUN, SYAFIIE WIJAYA, JUAN THOMAS