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Taiz master program Engineering & Management Course Systems Engineering Introduction

Lecturer : John L Simonswww.jlsimons.orgj.l.simons@rug.nl

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Just an example ! Enhancing safety procedures for a small airfield (i)

What is safety? What affects safety?What to include/exclude?How to define a solvable problem?

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Just an example ! Enhancing safety procedures for a small airfield (ii)

Rather than separate, well-defined functions, systems today interact in complex ways to perform operational missions. Seemingly minor design errors can cost lives.

Error Cost explosion >>> The discipline and

concepts of systems engineering provide ways to manage this complexity

System (re)design is the key

Definition 1

System design

3

Preliminary design

10

Detail design 50

Development 200

Use 500

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SE Today overview

About the course setup What are systems? What is SE? Applicability Methodology List of cases List of caput items for research List of journal articles

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What is Systems Engineering? From INCOSE http://www.incose.org/

… an interdisciplinary approach and means to enable the realization of successful systems. It focuses on defining customer needs and required functionality early in the development cycle, documenting requirements, and then proceeding with design synthesis and system validation while considering the complete problem. Systems Engineering considers both the business and the technical needs of all customers with the goal of providing a quality product that meets the user needs …

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What are systems?From INCOSE http://www.incose.org/

… A “system” is a construct or a collection of different elements that together produce results not obtainable by the elements alone. The elements include hardware, software, facilities, people, policies and information. The results include system level requirements, properties, characteristiscs, functions, behavior and performance …

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The blinder of System Engineers !

Everything is a system that can be redesigned to perform better !

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The focus of SE

SE (1) deals with real life problems of problem owners and (2) advocates systematic solving these problems by designing a system. This being the case, a university course cannot equally pay attention to these two aspects since lecturer and students practice SE methods and techniques under laboratory conditions.

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Yet another view on SE !

A more abstract view on SE emphasizes the translation process of a world problem Pw to a model problem Pm to a model solution Sm to a world solution Sw and the necessity to define these milestone products and their relations.

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The regulativ problem solving cycle

???

? !

!!!Pw

Pm Sm

Sw

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The role of SE in the E&M master

Methods in this course elaborate on methods in courses OR, Methods engineering, Product design and Production systems.

The courses Strategic management and Methods of research reflect on methods of SE.

SE offers the student a range of models, methods and techniques which can be used in the individual master’s research.

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About the course setup (i)

Student working groups of 2-3 students Self-activity with (E-)coaching Group assignment covers model analysis

for case, caput study, journal article review, methodology questions

Each group presents two times (for active audience) with feedback from lecturer

Report on time on target i.e. in this two week period

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About the course setup (ii)Daily four hours schedule

Introduction of theoretical key concept by lecturer and/or students

Groupwise case study (caput, journal, methodology) discussion

Presentation of results (case, caput,jornal article) by groups

Feedback on approach, methodology, real life SE organisations

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Cases (from the Blanchard book)

Failure mode effects and critically analysis FMECA Fault tree analysis FTA Reliability centered maintenance RCM Maintenance task analysis MTA Level of repair analysis LORA Design evaluation of alternatives Life cycle cost analysis LCCA.

> If such a case is chosen the focus is on the managerial aspects of SE. The approach must be applied to a new problem (preferably real life example from organization of the student).

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Other cases (full text from lecturer)

Spread of sleeping sickness. Model (system of differential equations) of populations of active and non-active malaria flies and infected and non-infected humans in a rural area. Analysis of spreading speed and stability points.

Waiting queues for study loan processes. Simulation of queues based on arrival and processing assumptions. Analysis via random number generation. Modeling of university schedule quality.

Definition and evaluation of schedule quality. Least squares model fitting to survey results of perceived quality. See http://dissertations.ub.rug.nl/faculties/management/1996/j.h.oldenkamp/

> If one of these last cases is chosen, the focus shifts to applying a mathematical method and reflecting on the applicability.

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SE is a team effort !

staring or doing

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Student’s goals for today (and tomorrow)

Form groups of 2 students. Each group chooses a case (use your preferences)

Each group must choose two presentation slots in the coming two weeks

Each group presents its problem definition, analysis, solution (1) and its caput or article (2) according to schedule

Schedule fixed after today Choice of caput and journal article during

days 1 and 2

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Presentation slots

Day 2 (first week) up to day 11 (second week)

Each day has two slots of max 20 minutes and max 10 slides

Each group chooses two slots (one for case, other for caput or article)

First come first serve Quality groups choose early slots for

optimal feedback

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Further plans for today (second hour)

Forming groups, choosing a case study, applying for presentation slots.

Start of group discussion. Anything goes.

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Further plans for today (third hour)

Continuation of group discussion. > At the end third hour each group

must have at least one slide with three remarks/questions for plenary discussion (SE field, case, plans, caput, confusion ...)

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Further plans for today (fourth hour)

Plenary discussion on items raised by groups

Feedback and tips for groups from lecturer

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Slot Case study Caput/Article

Day 2 Group 01 …

Day 3 Group 05 …

Day 4 …

Day 5 … …

Day 6 … Group 03

Day 7 …

Day 8

Day 9

Day 10

Day 11