OSU talk, 6-18, 2004

ugliestmysticΤεχνίτη Νοημοσύνη και Ρομποτική

14 Νοε 2013 (πριν από 3 χρόνια και 8 μήνες)

63 εμφανίσεις

2004/6/18

1

Importance of Hands
-
On for
Creativity

The meaning of “
Creativity
” in Chinese is

create
” (

) and “
make
” (

). Without
making

one can not
create

anything.

The goal of the courses with hands
-
on exercises
at National Central University at Taiwan is to
enhance the design ability of the students.


2004/6/18

2

Hands
-
On Course:
Introduction to
Machine and Instrument

This course is designed for Freshmen.

Objectives of this course is to introduce the
historical development as well as the working
principles of machines and instruments.

Besides the lecture, there are also some hands
-
on exercises in class. Some of topics in the last
year are

Steam boot

Electrical Car

2004/6/18

3

Making of Steam Boat

Through making the boat with the simplest
steam engine, students can learn the
fundamental working principle of powered
machine.

Materials are given to students to build the
engine:

1/8 inch soft copper tubing

candleholder

Students must search other suitable materials
for boat body, e.g. soft drink can, carton etc.


2004/6/18

4

Making of Electric Car

Through making an electric car, students are
encouraged to understand the basic structure
and knowledge on automobile.

Basic

Configurations

One brushless DC motors, 350 W, 24V (for E
-
Bike)

Speed controller: integrated within motor

Wheel arrangement: two front wheels for
steering; one rear powered wheel

Frames of car body: 40x40 aluminum
-
rack

Energy: two Pb battery, 12V, 7 Ah

2004/6/18

5

Making of Electric Car


2004/6/18

6

Making of Electric Car


2004/6/18

7

Hands
-
On Course:
Mechanism

Problems of students learning “mechanism” in
Taiwan:

Content of the course is too abstract to associate
the fundamental kinematic principles with real
mechanisms.

Students have difficulties in selecting and applying
suitable types of mechanism to the specific
problems after learning this course.

To encourage the students from the e
-
generation by
learning the “abstract” contents “mechanism” course,
we introduce therefore an after
-
class activity through
using “Fischertechnik” as an aid for students.


2004/6/18

8

Why Using “Fischertechnik”

Compact design of mechanism components;

Varity of components that are also used in
industries, e.g. Flip
-
Flop controller, pneumatics,
sensors;

Less effort on development of electric control
hardware/software, so that concentration on
contents of mechantronic mechanisms possible.

Possibilities for further projects on industrial
simulation with models using Fischertechnik
modules.

2004/6/18

9

After
-
Class Activity


Fischertechnik Exercise

2004/6/18

10

Modules Used in the Exercise

We don’t use the kits offered directly from the company,
instead we select the necessary parts that are suitable for
the objectives of the course.

2004/6/18

11

Base Components
:
Building blocks, Shafts, Lever etc
.

Connecting Components

Transmission Components
:
Gears, Cam, Pulley,
Differential (Gearbox);

Actuators
:
Motor (including also gear reducer), Pneumatic
cylinder;

Sensors
:

Photo transistor, Reed contact, NTC transistor, Limit
switch;

Controllers
:
Control card, Flip
-
Flop controller, Magnetic
control valve, Electric switch, Pneumatic switch

Software
:
LLWin

Modules Used in the Exercise

2004/6/18

12

Contents of Mechanism Exercise

No.

Topics

Objectives

0

Fundamentals on
Fischertechnik Modules

To learn the experience and the skill how to
use FT
-
Modules to construct mechanism

1

Linkage Mechanism


To learn and verify Grashof’s Law through
construction of mechanism

2

Cam Mechanism

To learn basic structure and motion type of
cam mechanism; build some common cam
mechanisms

3

Chain and Belt Mechanism

To learn the motion relation of the chain/belt
mechanism

4

Gear Mechanism

To learn the different types of gear
mechanisms and how to apply them to the
specific problem for power transmission

2004/6/18

13

Contents of Mechanism Exercise

No.

Topics

Objectives

5

Electric Control Modules


To learn how to use the different types of
sensors and the flip
-
flop controller to solve
the problem of motion control

6

Fundamental of Pneumatics


To learn the basic pneumatic components
and how to construct a pneumatic system to
fulfill the motion requirements

7

Integrated Exercise
: Automatic
Door

Use pneumatic components and electrical
controller/sensor to construct a door with
automatic opening and closing functions

8

Integrated Exercise
:

IR
-
Remote Car

Build a car that can run along a defined
route through IR
-
remote controller

9

Creative Mechanism Contest

To enhance the teamwork of students

2004/6/18

14

Example: Pneumatic Control


2004/6/18

15

Example: Linkage Mechanism


2004/6/18

16

Importance of Contest

A contest can

motivate the students,

impart a good sense of reality,

train to work in simulated but realistic industry
-
like settings of limited resources, time pressure,
and high competitiveness, and

teach the importance of co
-
operation and
teamwork.

2004/6/18

17

Basic Concept of Contest Applied in
Courses

Contest is a special learning model, in which we can

offer another teaching model, different as in
classroom, through
competition
,

motivate the students to face the problems and to
solve the problems through
activities
.


We divide the contests in our program into four levels:

interest,

concept,

skill,

integral.


2004/6/18

18

Contests and Their Attributes

Contests

Course

Academic
Year

Attribute Level

Bloom’s Cognitive Level

Interest

Concept

Skill

Integral

Knowledge

Comprehension

Application

Analysis

Synthesis

Evaluation

Valuation

Steam Boat Racing

Introduction to
Machine and
Instruments

Freshman

Electric Car Racing

Creative
Mechanism Contest

Mechanism

Sophomore

Creativity Contest

Creative
Engineering
Design

Junior/
Senior

2004/6/18

19

Steam Boat


Racing

2004/6/18

20

Electric Car


Racing

2004/6/18

21

Creative Mechanism Contest

A contest using Fischertechnik
-
modules will be
held before end of semester. Each student by
the exercise must participate this contest.

The theme and rule of the contest will be
determined by students themselves.

Topics of the contests for the past three years:

2001: Castle Attacking

2002: Obstacle Car
-
Race

2003: Walking Machine

2004: Soccer Robot

2004/6/18

22

2002 Creative Mechanism Contest

Obstacle Car
-
Race

2004/6/18

23

2003 Creative Mechanism Contest

Walking Machine

2004/6/18

24

Creativity Contest


Cannon Fighting

2004/6/18

25

Concept of DIY
-
Lab.

The DIY
-
Lab. is based on the concept that the students
can realize their ideas in a space, that is different as the
classroom, and in which either hardware (hand tools,
machine tools etc.) or software (handbooks, blackboard
for disscusion etc.) is avialable.

Our DIY
-
Lab. can offer

Platform for realization of mechanism ideas

Manufacturing of the machine parts,

Assembly of final products

Inspection and testing

Discussion

2004/6/18

26

Equipments in DIY
-
Lab.

Machine Tools and Hand Tools

2x Milling Machines: CNC and Manual

2x Lathes: CNC and Manual

Sawing Machine

Hand Tools (Cabinet set)

Handy electric tools (drill, grinder, screw driver etc.)

Instruments

Surface Roughness Instruments

Granite surface plate and accessories

Gage blocks

Micro meters and calipers

Dial gages

Oscilloscope


2004/6/18

27

View from DIY
-
Lab.

2004/6/18

28

Working in DIY
-
Lab.

2004/6/18

29

Optical Inspection Lab.


Fizeau

Interferometer
:

Light Source: 2mw He
-
Ne Laser @ 632.8 nm

Dimension(L
×
W
×
H) 768
×
190
×
253 mm

Aperture Size: 102 mm

Magnification Ratio: 6
×

Alignment View Angle:

1.8
°

Accuracy


l
/10


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-
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