3.5 analysis and design ii - philadelphia university analysis ii.pdf · 3.5 analysis and design ii...

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

3.5 Analysis and Design II

Dr. Tarek A. Tutunji

Philadelphia University

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Preview In the previous sequence, the 4th step in the design

process, Study Solutions was presented.

In this sequence, the 5th step: Analysis and Design of the chosen solution will be presented.

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Seven Design Steps1. Define the Problem2. Gather Information3. Propose Solutions4. Study the Solutions

5. Analyze and Design the chosen solution

6. Implement the Design7. Evaluate Performance

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Design Design should include

Drawings and Schematics

Math Models

Simulation Results

Report

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Circuit Diagrams

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Mechanical Drawings

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Mathematical Models

MassForce

Spring

Damper

dt

dxc-kx-Fma

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Mathematical ModelsR

V+

-

L C

+ VR - + VL -+ Vc -

i

idtC

1

dt

diLRiV

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Simulations Tools

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Simulation Tools

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Simulation Tools

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Example: Sorting Boxes Sort boxes, according to their sizes automatically, on a production line

Box

Sensor

Actuator 1 Actuator 2

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Sensors

Box ABox B

Transmitters Receivers

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Actuator DC Motor Specifications

Voltage: 12 V

Current: 5 Ampere

Speed: 1,000 RPM

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Start

Both Lights Off?

Delay

Delay

Motor On

Read Lights

Open Arm 1

Open Arm 2

Close Arm 1

Close Arm 2

No

Yes

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Schematic for the DC Motor

Vin

R Li

+

- Motor

T

w

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

DC Motor Modeling The electrical and mechanical equations

/LωkRiVdt

diωk

dt

diLRiV einein

FmFmmFFmm JJ/)ωb(bikdt

dωωb

dt

dωJωb

dt

dωJT

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Motor Simulation

1/(Ls+R) 1/(Js+b)k2

k1

+ +Vin

Tload

w

-

-

Ti

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Simulation: Motor Response

Dr. Tarek A. TutunjiEngineering Skills, Philadelphia University

Conclusion Design can be divided into seven-steps

The 5th step, Analysis and Design, was described in this sequence