Ellman

1

Evaluation of User Experience in Virtual Reality for Product Design

Asko Ellman Department of Mechanics and Design Tampere University of Technology Finland

Asko Ellman

Crecos seminar 2010

Otaniemi November 11-12

2

Main Goals for Cockpit Design Main goals for cabin design: • Visibility • Functionality • Ergonomics • Safety • Industrial design

Asko Ellman

Crecos seminar 2010

Otaniemi November 11-12

3

Design using Virtual Environments • Possibility to evaluate number of design alternatives •Evaluating the design in natural size • Sharing of information with number of people • Teleprecence

Asko Ellman

Crecos seminar 2010

Otaniemi November 11-

4

Human’s Mental Model in background

A human interprets world through his/hes senses:

• Vision

Experience, understanding

• Hearing • Posture sense • Sense of touch • Sense of smell • etc

Human’s mental model

Asko Ellman

Crecos seminar 2010

Otaniemi November 11-

5

Human’s Mental Model in background

Artificial senses need to be uniform enought

Uniform

• Vision

High immersion

• Hearing • Posture sense • Sense of touch • Sense of smell • etc

Simulator sickness Human’s mental model

Asko Ellman

Crecos seminar 2010

Contradiction

Otaniemi November 11-

6

Depth of Virtual Experience (Zelzer cubic) Virtual Reality What is meaningful level of VR for design?

Immersion Autonomy PC game CAD

Interaction

Asko Ellman

Crecos seminar 2010

Otaniemi November 11-

7

Real User and Virtual Cabin

Design quantity Visibility Functionality Ergonomics Industrial Design

Attributes of test setup Versatility Immersion Evaluation of Work Practicies Asko Ellman

Crecos seminar 2010

Otaniemi November 11-12

8

Combination of virtual and physical objects

Design quantity Visibility Functionality Ergonomics Industrial Design

Attributes of test setup Versatility Immersion Evaluation of Work Practicies Asko Ellman

Crecos seminar 2010

Otaniemi November 11-12

9

Haptics enables users to feel the virtual objects

Asko Ellman

Crecos seminar 2010

Otaniemi November 11-12

10

Real time simulator and motion platform enable users to make virtual work tasks

Asko Ellman

Crecos seminar 2010

Otaniemi November 11-12

11

Some problems with testing in VE

• Usually we are testing a dynamic set of work tasks done by human operator • We are finally evaluating humans experience in VE

Asko Ellman

Crecos seminar 2010

Research methods from humanistic sciences need to be applied, such as • work sociology • ethnography • user experience studies

Otaniemi November 11-12

12

Structure of Work Process in presented Sosiology based on activity theory

Tool

Outcome

Operator

= such as Excavation or harvesting

= User of the machine

Asko Ellman

= Mobile machine

Crecos seminar 2010

Otaniemi November 11-12

13

Interaction between Operator and Outcome

Tool Loading of user due to machine

= Mobile machine User Experience

Loading of machine due to user

Expertise

Operator Outcome

= User or Worker

Asko Ellman

= such as Excavation

Crecos seminar 2010

Otaniemi November 11-12

14

Roles of User and Designer in Design Process

Design Process

Work Process

Cockpit & Machine

Design Tool

Designer

Rules/ Norms

Asko Ellman

Community

Cockpit Plan

Operator

Div. of labour

Rules/ Norms

Crecos seminar 2010

Outcome

Community

Div. of labour

Otaniemi November 11-12

15

Test Setup Inspired by Etnography

Designer

Generally 5-7 user sample is enought

Observer

Operator

Asko Ellman

Crecos seminar 2010

Otaniemi November 11-12

16

Facets of User experience studies1

Human driven

Technology driven

Usability studies

Emotion & appealing (Kansei design)

Holistic Negative

Subjective Positive

UX

1

Hasselzahl and Tracinsky, 2006 User experience – a research agenda.

Behaviour & Information technology, 25.

Asko Ellman

Work driven

Crecos seminar 2010

Dynamic Task situated Temporally bounded Otaniemi November 11-12