ISE 2500 Flashcards on Chapter 38, created by Brandon Alcaraz on 29/04/2013.
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Created by Brandon Alcaraz
almost 11 years ago
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What are some of the advantages of using electrical power in an automated system?
What is the difference between a closed-loop control system and an open-loop control system?
What is the difference between fixed automation and programmable automation?
What is a sensor?
What is an actuator in an automated system?
What is a contact input interface?
What is a programmable logic controller?
Identify and briefly describe the three basic components of a numerical control system.
What are some of the benefits usually cited for NC compared to using manual alternative methods?
A leadscrew with a 7.5 mm pitch drives a worktable in an NC positioning system. The leadscrew is powered by a stepping motor which has 200 step angles. The worktable is programmed to move a distance of 120 mm from its present position at a travel speed of 300 mm/min. Determine (a) the number of pulses required to move the table the specified distance and (b) the required motor speed and pulse rate to achieve the desired table speed.
