Archive | Publications

Automation industry articles from ISA

Future-Engineers-Benefit-ISA-Student-Sections

Future Engineers Benefit from ISA Student Sections

In a prior blog post, I talked about how ISA student sections present opportunities for members to shape future generations of automation professionals. This article focuses on the benefits students receive from active participation in section activities. Given the difference in levels of education, one might conclude that the student sections at Francis Tuttle Technology […]

Continue Reading · 0
How-to-Use-4G-LTE-Wireless-Technology-to-Secure-Industrial-Automation-and-Control-Systems

How to Use 4G LTE Wireless Technology to Secure Industrial Automation and Control Systems

Supporting business needs by improving defense-in-depth cybersecurity for industrial automation and control systems (IACSs) is a key challenge today. For example, oil, gas, and water plants need to access scattered and remote areas and wells, but cybersecurity can be a major challenge, which may require physical security and cybersecurity protections and controls. Therefore, wireless technology, […]

Continue Reading · 0
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 […]

Continue Reading · 0
Flowmeter-Primer-Two-Wire-Coriolis-Electromagnetic-Transmitters-Meters

Flowmeter Primer: Two-Wire Coriolis and Electromagnetic Transmitters

Two-wire transmitter technology came about from an agreement among various instrument suppliers in the 1950s to standardize on 4–20 mA current loops as a means of sending a flow, temperature, pressure, or similar process signal back to control and monitoring systems. In the 1980s, HART was added to the 4–20 mA signal, providing additional calibration […]

Continue Reading · 0
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 […]

Continue Reading · 0
Calculate-Safety-Instrumented-System

How to Link HAZOP and LOPA to Calculate a Safety Instrumented System

Although a hazard and operability (HAZOP) analysis identifies failure events or upsets and the severity of the outcomes by engaging knowledgeable plant personnel, the process typically provides only qualitative information about event frequency and mitigated frequencies. This helps plants make decisions for safety improvement, but does not provide the detailed information necessary for a safety […]

Continue Reading · 0
How-to-Use-Life-Cycle-Dynamic-Simulation-to-Optimize-Process-Plant-Operations

How to Use Life-Cycle Dynamic Simulation to Optimize Process Plant Operations

The oil and gas production explosion is driving the renaissance of the chemical and process industries. With low-cost natural gas comes low-cost feedstock for many chemical compounds, in the form of ethane, propane, and butane, economically boosting the chemical industry. The American Chemistry Council released a report predicting capital investment of $72 billion in more […]

Continue Reading · 0
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 […]

Continue Reading · 0