Transcript ManCyc4 Presentation 1.1

ADAVANCED DESIGN APPLICATIONS
UNIT 4: MANUFACTURING
Learning Cycle Four – In Control
© 2015 International Technology and Engineering Educators Association
The BIG Idea
 Big Idea:
Systems involve simple and
complex technologies working
together to control or
accomplish a task.
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Objectives
 After completing this
learning cycle, you will be
able to:
 Describe how a microprocessor
is used to control devices and
systems and to provide
information to humans.
 Write a program to control a
“positionable” motor.
© 2015 International Technology and Engineering Educators Association
Computer Integrated
Manufacturing
The integration of computers
into manufacturing
Reduces
Costs
Producing designs
Packing
Shipping
Time and effort of workers
Provides repeatability
Safe, economical, timely
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Computer Integrated
Manufacturing
Computer Aided Design
(CAD)
 Create, modify, and
design products
 Quickly alter drawings
http://www.deskeng.com/de/which-graphics-card-is-right-forcomputer-aided-design/
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Computer Integrated
Manufacturing
Computer Numerical Control (CNC)
 Program basic machine
motions
 Uses programming to
perform a process
 Simulate a process to
identify errors
http://tex.org/what-is-a-cnc-machinist-and-what-do-they-do/
© 2015 International Technology and Engineering Educators Association
Computer Integrated
Manufacturing
Computer Aided Manufacturing (CAM)
 Interface into
management and
control of
manufacturing
 Better control of
scheduling and
inventory
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http://www.fashion-writings.com/computer-aided-design-engineeringmanufacturing/
Exploration
Microprocessors
Control all kinds of motors
Inkjet print head
DVD automatic eject
feature
Used during manufacturing
Automate processes
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Explain
 Stepper Motors
 Require complex
control circuitry
 Servo Motors
 Stepper motor
with
additional control
circuitry
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http://files.tested.com/photos/2013/06/12/48912arduinouno_r3_front.jpg
Basic Servo
 Programming the UNO R3




Sending brief “high” signals
Repeatedly sent every 20 ms
Last between 1-2 ms
Length determines position
 Servo Motor
 Moves through an arc of 180
degrees
 Moves through an arc of 180
degrees in opposite direction
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Review of Schematic
Symbols
560 Ohm
P9
GND
P9
GND
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An Explanation of the Program
This part of the program implements the
“servo” library of the Arduino
Programming Language. It allows
commands that move the servo to be
used.
#include <Servo.h>
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Educators Association
An Explanation of the Program
This creates a new servo named: “myservo”
and sets its position to 0.
Servo myservo;
int pos = 0;
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Educators Association
An Explanation of the Program
This tells the Arduino that the servo output
will be on pin 9.
void setup()
{
myservo.attach(9);
}
© 2015 International Technology and Engineering
Educators Association
An Explanation of the Program
“for” loops are used to deliver a certain number of
pulses to the servo motor, which cause the servo
motor to hold a position for a certain amount of
time. This loop delivers 180 pulses.
A jumper wire, resistor, and LED are all connected in
Pin 9. All are receiving signals through this Pin.
for(pos = 0; pos < 180; pos += 1)
{
myservo.write(pos);
delay(15);
}
© 2015 International Technology and Engineering
Educators Association