Author Archive | ISA Transactions

Plant-Wide-Control-Design-Based-on-Steady-State-Combined-Indexes

Plant-Wide Control Design Based on Steady-State Combined Indexes

  Abstract: This work proposes an alternative methodology for designing multi-loop control structures based on steady-state indexes and multi-objective combinatorial optimization problems. Indeed, the simultaneous selection of the controlled variables, manipulated variables, input-output pairing, and controller size and interaction degree is performed by using a combined index which relies on the sum of square deviations and […]

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Measuring-Fuel-Oil-Viscosity-in-a-Power-Plant

Measuring Fuel Oil Viscosity in a Power Plant

  Abstract: The viscosity measurement and control of fuel oil in power plants is very important for a proper combustion. However, the conventional viscometers are only reliable for a short period of time. This paper proposes an on-line analytic viscosity evaluation based on energy balance applied to a piece of tube entering the fuel oil main […]

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Novel-Auto-Tuning-Method-for-Fractional-Order-PID-Controllers

Auto-Tuning Method for Fractional Order PID Controllers

  Abstract: Fractional order PID controllers benefit from an increasing amount of interest from the research community due to their proven advantages. The classical tuning approach for these controllers is based on specifying a certain gain crossover frequency, a phase margin and a robustness to gain variations. To tune the fractional order controllers, the modulus, phase […]

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High-Pressure-Common-Rail-Injection-System-Modeling-and-Control

How to Reduce Diesel Engine Pollution Through a High-Pressure Common Rail Injection System

  Abstract: In this paper, modeling and common-rail pressure control of high-pressure common rail injection system (HPCRIS) is presented. The proposed mathematical model of high pressure common rail injection system which contains three sub-systems: high pressure pump sub-model, common rail sub-model and injector sub-model is a relative complicated nonlinear system. The mathematical model is validated by […]

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Dual-Mode-Adaptive-Fractional-Order-PID-Controller-with-Feedforward-Controller-for-Quadruple-Tank-Process

Dual-Mode Adaptive Fractional Order PID Controller with Feedforward Controller for Quadruple Tank Process

  Abstract: The quadruple tank process (QTP) is a well-known benchmark of a nonlinear coupled complex MIMO process having both minimum and nonminimum phase characteristics. This paper presents a novel self tuning-type dual-mode adaptive fractional order PID controller along with an adaptive feedforward controller for the QTP. The controllers are designed based on a novel variable […]

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Optimal-PID-Controller-for-Standard-Second-Order-Plus-Time-Delay-Systems

Optimal PID Controller for Standard Second-Order Plus Time Delay Systems

Abstract: An improved tuning methodology of PID controller for standard second order plus time delay systems (SOPTD) is developed using the approach of Linear Quadratic Regulator (LQR) and pole placement technique to obtain the desired performance measures. The pole placement method together with LQR is ingeniously used for SOPTD systems where the time delay part is […]

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PWM-Switching-Pattern-Based-Diagnosis-Scheme-for-Induction-Motor-Drives

PWM-Switching Pattern-Based Diagnosis Scheme for Induction Motor Drives

Abstract: This paper deals with a fault detection technique for insulated-gate bipolar transistors (IGBTs) open-circuit faults in voltage source inverter (VSI)-fed induction motor drives. The novelty of this idea consists in analyzing the pulse-width modulation (PWM) switching signals and the line-to-line voltage levels during the switching times, under both healthy and faulty operating conditions. The proposed […]

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Applications-of-Thermoelectric-Modules-on-Heat-Flow-Detection

Applications of Thermoelectric Modules on Heat Flow Detection

Abstract: This paper presents quantitative analysis and practical scenarios of implementation of the thermoelectric module for heat flow detection. Mathematical models of the thermoelectric effects are derived to describe the heat flow from/to the detected media. It is observed that the amount of the heat flow through the thermoelectric module proportionally induces the conduction heat owing […]

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