DESIGN A CONTROL SYSTEM SIMULATOR USING PROGRAMMABLE LOGIC CONTROLLER
Автор:Tanveer Ahmed Год: 2010 Издание:LAP Lambert Academic Publishing Страниц: 60 ISBN: 9783838386379 Control can be defined as keeping a physical variable (pressure, temperature, level, flow etc.) as constant as possible by measuring instantaneous value of physical variable, comparing it with the desired value and using the difference to make a correction which reduces this difference. It may include everything from a process control computer and then the control components: the switches, stepping motors, solenoids, and sensors. Programmable Logic Controller (PLC) is used in Industries from last twenty yeas. This is a very flexible controlling device, can be used in every type of industries for the automation. An era was started after the invention of microprocessor; to design develops microprocessor-based system for automation of the machines. Similar is in the case of PLC, when it was discovered in an automobile industry. PLC which has a fixed hardware, manufactured by the several manufacture worldwide, can be in-corporate in any mechanical and electrical system...
