What is Optimal Control?

Optimal control is whereby the requirements are formulated as either the minimization of a cost index or the maximization of a performance index of an operational control system.

What is Optimal Control?

Optimal control is utilized in a number of disciplines such as aircraft … Read more

Phase Locked Loop High Precision Motor Speed Control System

AC generators can be utilized in high precision control systems. The AC generator rotor is rotated by the rotating shaft (i.e. the shaft from the motor being controlled). The output AC frequency is proportional to shaft speed. Zero crossings per … Read more

How to Connect Discrete Sensors to PLC Inputs

Discrete Sensor Outputs  

Basically sensor outputs can be categorized into two types: discrete also referred to discrete or logic and proportional also called analog. Discrete sensors supply a single logical output (1 or 0) e.g. a flow switch used … Read more

NAMUR NE 107 Standard for Modern Instrumentation Diagnostics

NAMUR NE 107 is a standard adhered to by manufacturers during the design and fabrication of instruments. NAMUR NE 107 provides status signals that communicate clear messages and remedies.  These status signals or diagnostic codes are categorized into four standard … Read more

PLC Instruction Set

An Overview of PLC Instructions Types

There are various types of instructions that are available in a PLC. The instruction set will vary depending on the brand and type of processor you are working with. For example, the classic Allen-Bradley … Read more

Input & Output Modules of a PLC – Types & Applications

The input/output modules act as the signal interface between the monitoring sensors and actuators, and the controller. Additional they provide electrical isolation, if needed, to convert the input signals into an electronic format appropriate for evaluation by the … Read more

Programmable Automation Controllers (PACs) – Features & Applications

What are Programmable Automation Controllers?

Programmable automation controllers (PACs) are process controllers with an open configuration and possessing the enterprise integration power of a PC-based structure. In other words, PACs are industrial controllers that combine the functionality of a programmable Read more

The Role Played By Edge Computing in Manufacturing

Edge computing can be defined as a distributed computing framework that brings enterprise applications closer to data sources like local edge servers. In manufacturing, edge computing offers an effective processing and storage choice since intensive data handling and storage can … Read more

How PLC Systems are Protected from Plant Voltages

Internally a PLC typically operates at 5 V dc. The external devices such as solenoids, limit switches, motor starters, etc. operate at voltages up to 110 V ac. The mixing of these voltages will cause irreparable damage to the PLC … Read more

Actuators as Automation Components

An actuator is normally controlled by the controller. The actuator, in turn, changes the output of an automated process. The actuator in an automated process may in actual fact be several actuators, each of which provides an output that … Read more