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Automating Manufacturing Systems with PLCs.pdf

November 9, 2009 · Filed Under Mechanical & Industrial Engineering · Comment  · Tags: , , ,

Taken from PROGRAMMABLE LOGIC CONTROLLERS’s Introduction: Control engineering has evolved over time. In the past humans were the main method for controlling a system. More recently electricity has been used for control and early electrical control was based on relays. These relays allow power to be switched on and off without a mechanical switch. It is common to use relays to make simple logical control decisions. The development of low cost computer has brought the most recent revolution, the Programmable Logic Controller (PLC). The advent of the PLC began in the 1970s, and has become the most common choice for manufacturing controls.
PLCs have been gaining popularity on the factory floor and will probably remain predominant for some time to come. Most of this is because of the advantages they offer: Cost effective for controlling complex systems.
Flexible and can be reapplied to control other systems quickly and easily.
Computational abilities allow more sophisticated control.
Trouble shooting aids make programming easier and reduce downtime.
Reliable components make these likely to operate for years before failure.

s p o n s o r e d   l i n k s


A Heat Transfer Textbook - Third Edition.pdf

February 16, 2009 · Filed Under Mechanical & Industrial Engineering · 7 Comments  · Tags: , , ,

The flow of heat is all-pervasive. It is active to some degree or another in everything. Heat flows constantly from your bloodstream to the air around you. The warmed air buoys off your body to warm the room you are in. If you leave the room, some small buoyancy-driven (or convective) motion of the air will continue because the walls can never be perfectly isothermal. Such processes go on in all plant and animal life and in the air around us. They occur throughout the earth, which is hot at its core and cooled around its surface. The only conceivable domain free from heat flow would have to be isothermal and totally isolated from any other region. It would be “dead” in the fullest sense of the word - devoid of any process of any kind.

VHDL Starters Guide.pdf

August 5, 2008 · Filed Under Electrical Engineering · 2 Comments  · Tags: ,

This text focuses on presenting the basic features of the VHDL language in the context of its use for simulation. The text is targeted for use in sophomore and junior level courses in digital logic and computer architecture.

Precision RTL Synthesis Users Manual.pdf

July 4, 2008 · Filed Under Electrical Engineering · Comment  · Tags: , , , ,

Precision RTL Synthesis is a synthesis platform the maximizes the performance of both existing programmable logic devices (CPLDs and FPGAs) and next-generation, multi-million gate field programmable system-on-chip (FPSoC) devices. Precision RTL Synthesis is a comprehensive tool suite, providing design capture in the form of VHDL and Verilog entry, advanced register- transfer-level logic synthesis, constraint-based optimization, state-of-the-art timing analysis, schematic viewing and encapsulated place-and-route. Precision RTL Synthesis runs on PC platforms using Windows 2000/NT/XP and Linux RedHat; and UNIX Sun and HP platforms. Refer to the Precision Synthesis Installation Guide for detailed information about supported system configurations and requirements.

Flender Technical Handbook.pdf

June 20, 2008 · Filed Under Mechanical & Industrial Engineering · 9 Comments  · Tags: , , ,

A must have handbook for all engineers and scientist, consists frequently accessed informations about machinery, mechanical, electrical, math, hydraulic, vibrations, gear etcetera .. all available free in pdf format!




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