Tag Archives | Instrumentation

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 the […]

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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 parameter […]

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Leadership-Transition-Process-Transaction

Leadership Transition Is a Process Not a Transaction

The conclusion of ISA’s annual Fall Leader’s Meeting tends to signal that the end of the year is approaching and it’s time to begin preparing for a new one. At ISA, an important part of preparing for a new year is preparing for leadership transition. Each year, numerous Society leaders fulfill their leadership obligations and […]

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Control-Valve-Style-More-Likely-Develop-Blockage

AutoQuiz: Which Control Valve Style Is More Likely to Develop a Blockage?

Today’s automation industry quiz question comes from the ISA Certified Automation Professional certification program. ISA CAP certification provides a non-biased, third-party, objective assessment and confirmation of an automation professional’s skills. The CAP exam is focused on direction, definition, design, development/application, deployment, documentation, and support of systems, software, and equipment used in control systems, manufacturing information […]

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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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Take-Advantage-of-the-Opportunities-at-ISA-Fall-Leaders-Meeting

Take Advantage of the Opportunities at ISA’s Fall Leaders Meeting

The ISA Fall Leaders Meeting (FLM)—which will get underway later this month in Tampa, Florida—brings ISA leaders together to assess the state of the Society, consider strategies and actions to improve operational results, conduct training sessions for new leaders, plan for leadership succession, celebrate achievements, and promote fellowship. For the seasoned member and/or leader, it […]

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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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Fault-Tolerant-Synchronization-of-Chaotic-Gyroscope-Systems

Fault Tolerant Synchronization of Chaotic Heavy Symmetric Gyroscope Systems

Abstract: In this paper, fault tolerant synchronization of chaotic gyroscope systems versus external disturbances via Lyapunov rule-based fuzzy control is investigated. Taking the general nature of faults in the slave system into account, a new synchronization scheme, namely, fault tolerant synchronization, is proposed, by which the synchronization can be achieved no matter whether the faults and […]

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ISA-takes-new-direction

A New and Different Direction for ISA

The classic definition of insanity is to keep doing the same things you have been doing and expecting different results.  At some point, you have to nudge things along in an attempt to affect a change and move in a positive direction. Last month, ISA’s Executive Board decided it was time to change what we […]

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