slide perkenalan vip-plan opt

Pekenalan Software “VIP-PLANOPT”

TI4101 Perancangan Tata Letak Pabrik

Program Studi Teknik Industri Institut Teknologi Bandung

2010

Outline

Program Studi Teknik Industri ITB

VIP-PLANOPT

Introduction

Terminology

How to Use?

Performance

Comparison to Other Software

Conclusion

TI4101 Perancangan Tata Letak Pabrik 2

INTRODUCTION

Introduction (1)


• VIP-PLANOPT (Visually Interfaced

Package of floor-PLAN layout

OPTimization)

What?

• 20-50% of operating cost relates to material handling

• US business spend about trillion dollar on new facilities

Motivation

(Productivity and

profitability)


Introduction (2)


• Guaranteed superiority on other algorithm for low-cost layout

• Has a record of UNBEATEN PERFORMANCE with a money back guarantee

Filling the Gap

• User-specified pick-up and drop-off points

• Allow any number facilities to be “anchored”

• Specify the shape and the size

• Module Padding

• Forbidden Area Module

• No-Flow Modules

Unmatched Functonality


Introduction (3)


• Better than all GA’s, SA’s and the conventional analytical or heuristic techniques

• Has not been published

• Introduced double precision arithmetic

• Introduce new techniques to reduce dependence the user-specified

• Introduction Penalty functions using boundary shape

Optimization Algorithm


TERMINOLOGY

Terminology (1)


MODULE

Representing

departments,

machines,

rooms,

cells, or

spaces


Terminology (2)


• Module Aspect Ratio Ri = Wi/Li

• Module Area Ai = Wi * Li

• Module Type Hard vs Soft

• Module Placement (x, y)

• Module Position Movable vs Anchored


Terminology (3)


• Forbidden Area Module (FAM) Not Fuctional Facility

• Module Orientation Fixed vs May Flipped

• Module Padding Empty Space

(ex : Allowance)

• Pick-up & Drop-off Points Centroid or No

• Boundary Shape Restriction of Facility


Terminology (4)


ENCLOSURE

Bounding rectangle enclosing the modules in a layout


Terminology (5)


•Flow Matrix Number of material flow

•Unit Cost Matrix Cost of transporting

a “unit load” per unit distance

•Cost Matrix Total Cost each material flow


How To Use ? (In PTLP 2011)

How To Use? (1)


Define The Modules

Input Flow Matrix

Input Cost Matrix per Unit

Making Boundary Shape

Placement Anchored Modules

Optimize the Problem

Search Optimal Solution


How To Use? (2)



Define The Modules

1 • Define

Dimension

2 • Define Module

Type

3 • Define Module

Orientation

4 • Define Module

Position

1

2

3 4

How To Use? (3)



Input Flow Matrix & Cost Matrix Per Unit

5

6

7

How To Use? (4)



Making Boundary Shape

8

9

10

How To Use? (5)



Placement Anchored Modules

11

12

13

How To Use? (6)



Optimize the Problem

14

15

How To Use? (6)



Search Optimal Solution

16

17

PERFORMANCE

Performance (1)



No Number of Modules

Conditions Calculation Time/Solution

1 3 Symetric cost matrix 0.004 seconds

2` 8 8 Hard modules of unequal areas Symetric cost matrix

0.008 seconds

3 20 20 unequal areas Optimal solution 1157!

Best published solution 1264

0.059 seconds

4 50 2.383 seconds

5 100 11.91 seconds

6 125 29.664 seconds

Calculation Time

Performance (2)



Example of Layout Solution (20 Modules)

Iteration #3 Iteration #40

Performance (2)



Example of Layout Solution (125 Modules)

COMPARISON TO OTHER SOFTWARE

Comparison to Other Software



VIP-PLANOPT vs Craft (PTLP Case)

CRITERIA VIP-PLANOPT (PTLP 2011) CRAFT (PTLP 2010)

Input Facilities Dimension, Unit Cost Matrix, Flow Matrix,

Unit Cost Matrix, Flow Matrix, Initial Layout Coordinate,

Number of iteration 41 (0-40) Not specified

Boundary Shape composite square

Facilities Shape Square, 1 facilities = 1 square

Square, Letter L 1 facilities > 6 squares

Facilities Form Location, machine Location

Solution Range 100-200 million rupiahs 90-140 million rupuiahs

Conclusion

Conclusion



Conclusion

1

• VIP-PLANOPT has been proved that could give better solution in many problems compared with any other approach.

2

• But, VIP-PLANOPT give worse solution in PTLP case. That is because the lack of experience in using this powerful software.

3

• Also user must define the PTLP case more detail when using the software. It is because VIP-PLANOPT provides more parameter which is very relevant with the real system.

NEXT CHAPTER : Shop Floor Control: Systems and Extensions

THANK YOU!!!

Production Planning and Control System

slide perkenalan vip-plan opt

Documents