Design in the Loop Bridging the gap between subjective ... · Pitch ‘n’ Roll Behavior consumer...
Transcript of Design in the Loop Bridging the gap between subjective ... · Pitch ‘n’ Roll Behavior consumer...
Design in the Loopg p
Bridging the gap between subjective perception and objectiveevaluation to achieve desired handling characteristicsg
"apply & innovate 2012" - IPG Technology Conference, September 18-19, 2012 Dieter Scharpe, Chief Operating Officer, Dept. of Vehicle Engineering, TU DresdenProf Dr Ing Günther Prokop Dept of Vehicle Engineering TU DresdenProf. Dr.-Ing. Günther Prokop, Dept. of Vehicle Engineering, TU DresdenBernhard Schick, Managing Director, IPG Automotive GmbH, KarlsruheDavid Golloch, TU Dresden
The Problem:Customer is slightly displeased with your carg y p y
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The Problem:Consumer tests compare and criticize your carp y
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The Challenge:You need to improve but can‘t get a handle on “how“ and “where“!p g
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The Reason:The consumer‘s perception is subjective! p p jBut as an engineer, you need objective criteria
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The Solution:“Design in the Loop“ for cars that customers wantDesign in the Loop for cars that customers want
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Design in the Loop
Design in the Loop
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targetcarin the Loopcustomer car
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Design in the Loop
SubjectiveEvaluation
House of Quality
Chassis Guide
y
undefinedcustomer
targetcar
Simulation
customer car
Multi Body Simulation
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Design in the Loop
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Chassis Guide
House of Quality
C G
Simulation
Multi Body
Simulation
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Design in the Loop
SubjectiveEvaluation
House of Qualityy
Chassis Guide
Simulation
Multi Body Simulation
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Chassis Guide
Simulation
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Simulation
SubjectiveEvaluation
Chassis Guide
House of Quality
Customer Needs
Multi Body Simulation
Simulation Knowing and meeting the consumer‘s real wishes
HoQRanking6
Technical specifications4
Engineer‘slanguage
Importance of customerwishes
Link betweentechnical specification
Customer /media target
1Customer /media wishes
2 5
Technical specifications4
Subjectivebenchmarking
3
ting
2 3
rget
lin
e
technical specification and customer wishes
Benchmarking
media target group, market
media wishes
7
benchmarking
Ra
Ta
Customerlanguage
Medialanguage
Result8
Tech. targets9
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Translating consumer speech into designable engineering languageSource:TÜV SÜD Automotive GmbH
SubjectiveEvaluation
Chassis Guide
House of Quality
Subjective EvaluationMulti Body Simulation
C ass s Gu de
Simulation
Subjective EvaluationReduction of motion and road excitation on standardized maneuvers
Driving Dynamics Comfort
aneu
ver
euve
r
andt
“ Ma
Vertical dynamics Ditch
C rbSO
Man
e
“Vibration DNA“1
ISO Slalom 18m“B
ertr
a Curb Different speed levels
IS
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1 [Bertrandt/Hubbel]ISO Slalom 18m
SubjectiveEvaluation
Chassis Guide
House of Quality
S bj ti E l tiMulti Body Simulation
C ass s Gu de
SimulationSubjective EvaluationTraditional rating & subjective rating
Criteria: ride harshness Problem of subjective evaluation
9mark10
9mark10
9+10
9-identified optimum9
8
7?
[too smooth] [too firm]
?9
8
7
9
8+
7+
6+6-
9
8-
7-
optimum
6
5
4
[ ] [ ]6
5
4
6
5+
4+
3+
6
5-
4-
3-
[state of the art]
d lM l l @ 30k /h
3
2
1
3
2
1
3
2+
1+
3
2-
1- [too less] [too much]
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measured valueManeuver: slalom @ 30km/h
SubjectiveEvaluation
Chassis Guide
House of Quality
S bj ti E l tiMulti Body Simulation
C ass s Gu de
SimulationSubjective EvaluationDescribing driving emotions / experiences
S bj ti l ti d f t R ti E l t /C t
km-StandM ilage
1. Customer
2. Competitor3 Benchmark
BeladungLoad
FahrzeugVehicle
FahrzeugtypVehicle Type
Subjective evaluation onroad-comfort
Bewertung10 excellent (state of the art)9 v ery good8 good7 satisf y ing6 minimum acceptable5 not satisf y ing
BORDERLINE 4 poor
Evaluator / Commentexpert / not deteectible
expert / hardly detectableexpert / nominal complaintcritical consumer / slightly detectablecritical consumer / detectableregular consumer / explicit detectable
regular consumer / displeasing (claim)
Rating10 excellent (state of the art)9 very good8 good7 satisfying6 minimum acceptable5 not satisfying
Evaluator/Commentexpert/ not detectableexpert/ hardly detectableexper /nominal complaintcritical consumer/slightly detectablecritical consumer/detectableregular consumer/explicit detectable
3. Benchmark
1. 2. 3. 1. 2. 3.
8,0 6,5 8,0 8,0 7,0 8,0
6,5 8,5 10,0 7,5 6,5 9,0
7 0 8 0 10 0 7 0 8 5 8 5
Federung/ DämpfungSuspension/ Shock absorberFederungs und Dämpferkomfort Suspension- and shock absorber comfort
Nickfederverhalten Pitch behaviourWankfederverhalten
Ergonomie und AkustikÜbersichtlichkeit und FunktionalitätOverview and functionalitySitzkomfort und IsolationSeat comfort and insullation
Sitzseitenführung
p3 insuf f icient2 bad 1 v ery bad
egu a co su e / d sp eas g (c a )consumer / inacceptable (corrupt component)consumer / inacceptable (limited activ ity )consumer / inacceptable (without activ ity )
BORDERLINE 4 poor3 insufficient2 bad1 very bad
regular consumer displeasing (claim) consumer/unacceptable (corrupt component)consumer/unacceptable (limited activity)consumer/unacceptable (without activity)
7,0 8,0 10,0 7,0 8,5 8,5
8,5 6,5 8,5 8,0 7,0 9,0
8,0 7,0 9,0 8,0 7,5 8,5
1. 2. 3. 7,5 7,0 9,0
7,5 8,0 9,0
8 0 7 0 8 5Stuckern
Abrollkomfort Rolling comfort
Schluckvermögen mechanisch Absorbing capacity(mechanical)
AufbaucharakteristikBody charakteristic
Roll behaviour
DröhnenDrone
Schluckvermögen akustischAbsorbing capacity (acoustical)
Vorderbauunruhe Front end behaviour
AbrollgeräuschRoad noise
Seat lateral traction
Decomposing into:
Longitudinal Acc.
Lateral Acc8,0 7,0 8,5
8,0 8,0 9,0
7,0 8,5 9,5
7,0 7,5 9,0
6,5 8,0 8,5
Stuttering
UnterbauvibrationenBody vibration
QuerschüttelnTransversal shaking
Aushängen Detaching
PuffereinsatzBump stop working
Lateral Acc.
Head Position
Acc. Gradient
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Gaining quasi-objective ratings in highly decomposed test procedures
SubjectiveEvaluation
Chassis Guide
House of Quality
Subjective EvaluationMulti Body Simulation
SimulationSubjective EvaluationDisintegrated subjective driving impressions
Driving Dynamics
Braking HandlingRideComfortAcceleration
Driving Dynamics
Relevant tod
NVHTransmis
sionBehavior
SteeringBehavior
Pitch ‘n’ RollBehavior
consumer and carmagazine
Only subjectively
CopyingRoll Steer
Lateral Torso
Support
HeadShake
Only subjectivelyratable
LongitudinalAcceleration
HeadPosition
Acc.Gradient
LateralAcceleration
Quasi-objectively perceptible+
objectively measurable
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Resolution of evaluation criteria into measurable quantities
SubjectiveEvaluation
Chassis Guide
House of Quality
Obj ti E l tiMulti Body Simulation
SimulationObjective EvaluationMeasuring the way a human being feels
Road Test
Steering Robot
IMU / DGPS
Data acquisition device
CorrevitCo e t
Measurement steering wheel
A sensors
Strain gauge sensors
CAN signals
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Tailored measuring in the right places
SubjectiveEvaluation
Chassis Guide
House of Quality
Obj ti E l ti
St
Multi Body Simulation
C ass s Gu de
SimulationObjective EvaluationHead shake
Stepinput
Sine sweep test VideoVideo
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SubjectiveEvaluation
Chassis Guide
House of Quality
Characteristic CurvesMulti Body Simulation
SimulationCharacteristic Curves
Subjektive Beurteilung Fahrkomfort
km-StandM ilage
1. Customer
2. Competitor3 Benchmark
FahrzeugVehicle
FahrzeugtypVehicle Type
BeladungLoad
j gSubjective evaluation onroad-comfort
Bewertung10 excellent (state of the art)
9 v ery good8 good7 satisf y ing6 minimum acceptable5 not satisf y ing
BORDERLINE 4 poor
Evaluator / Commentexpert / not deteectible
expert / hardly detectableexpert / nominal complaintcritical consumer / slightly detectablecritical consumer / detectableregular consumer / explicit detectable
regular consumer / displeasing (claim)3. Benchmark
1. 2. 3. 1. 2. 3.
8,0 6,5 8,0 8,0 7,0 8,0
6,5 8,5 10,0 7,5 6,5 9,0
Ergonomie und AkustikErgonomics and NVHÜbersichtlichkeit und FunktionalitätOverview and functionality
Sitzkomfort und IsolationSeat comfort and insullation
Federung/ DämpfungSuspension/ Shock absorberFederungs und Dämpferkomfort Suspension- and shock absorber comfort
Nickfederverhalten Pitch behaviour
4 poor3 insuf f icient2 bad 1 v ery bad
regular consumer / displeasing (claim) consumer / inacceptable (corrupt component)consumer / inacceptable (limited activ ity )consumer / inacceptable (without activ ity )
7,0 8,0 10,0 7,0 8,5 8,5
8,5 6,5 8,5 8,0 7,0 9,0
8,0 7,0 9,0 8,0 7,5 8,5
1. 2. 3. 7,5 7,0 9,0
7 5 8 0 9 0
Schluckvermögen akustischAbsorbing capacity (acoustical)
Vorderbauunruhe
AbrollgeräuschRoad noise
SitzseitenführungSeat lateral traction
DröhnenDrone
Abrollkomfort Rolling comfort
Schluckvermögen mechanisch Absorbing capacity(mechanical)
AufbaucharakteristikBody charakteristic
Wankfederverhalten Roll behaviour
7,5 8,0 9,0
8,0 7,0 8,5
8,0 8,0 9,0
7,0 8,5 9,5
7,0 7,5 9,0
Front end behaviour
PuffereinsatzBump stop working
QuerschüttelnTransversal shaking
Stuckern Stuttering
UnterbauvibrationenBody vibration
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6,5 8,0 8,5Aushängen Detaching
SubjectiveEvaluation
House of Quality
Multi Body Simulation
Chassis Guide
SimulationCharacteristic Curves
Subjektive Beurteilung FahrkomfortSubjektive evaluation onroad-comfort
Bewertung Evaluator / Commentkm-Stand
M ilage
1. Customer
2. Competitor3. Benchmark
1. 2. 3. 1. 2. 3.
8,0 6,5 8,0 8,0 7,0 8,0
Ergonomie und AkustikErgonomics and NVHÜbersichtlichkeit und FunktionalitätOverview and functionality
BeladungLoad
FahrzeugVehicle
FahrzeugtypVehicle Type
Federung/ DämpfungSuspension/ Shock absorberFederungs und Dämpferkomfort Suspension- and shock absorber comfort
Bewertung10 excellent (state of the art)
9 v ery good8 good7 satisf y ing6 minimum acceptable5 not satisf y ing
BORDERLINE 4 poor3 insuf f icient2 bad 1 v ery bad
Evaluator / Commentexpert / not deteectible
expert / hardly detectableexpert / nominal complaintcritical consumer / slightly detectablecritical consumer / detectableregular consumer / explicit detectable
regular consumer / displeasing (claim) consumer / inacceptable (corrupt component)consumer / inacceptable (limited activ ity )consumer / inacceptable (without activ ity )
cele
ratio
n
+6,5 8,5 10,0 7,5 6,5 9,0
7,0 8,0 10,0 7,0 8,5 8,5
8,5 6,5 8,5 8,0 7,0 9,0
8,0 7,0 9,0 8,0 7,5 8,5
1. 2. 3. 7,5 7,0 9,0
7,5 8,0 9,0
Overview and functionality
Schluckvermögen akustischAbsorbing capacity (acoustical)
Vorderbauunruhe Front end behaviour
AbrollgeräuschRoad no ise
Sitzkomfort und IsolationSeat comfort and insullation
SitzseitenführungSeat lateral traction
DröhnenDrone
Nickfederverhalten Pitch behaviourWankfederverhalten Roll behaviour Abrollkomfort Rolling comfort
Schluckvermögen mechanisch Absorbing capacity(mechanical)
AufbaucharakteristikBody charakteristic
Suspension and shock absorber comfort
late
ral a
cc+8,0 7,0 8,5
8,0 8,0 9,0
7,0 8,5 9,5
7,0 7,5 9,0
6,5 8,0 8,5Aushängen Detaching
PuffereinsatzBump stop working
Stuckern Stuttering
UnterbauvibrationenBody vibration
QuerschüttelnTransversal shaking
time
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SubjectiveEvaluation
Chassis Guide
House of Quality
Characteristic Curves
Multi Body Simulation
C ass s Gu de
Simulation
Characteristic Curves“Validated” measurement
ion mark 10
mark 8
t) car 2
l acc
eler
ati
mark 7
d m
ovem
ent car 2
[competitor]
late
ral
(hea
d
car 1[customer]
car 3[benchmark]
time
[customer]
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Linking subjective evaluations with objective measurements
SubjectiveEvaluation
Chassis Guide
House of Quality
Ch t i ti CMulti Body Simulation
C ass s Gu de
SimulationCharacteristic Curves Curb drive over
BenchmarkCustomer Car
rated mark 6
rated mark 8
Comfort-critical phenomenon of the “noisy rear axle” can now be identified d l t d th h hi h l ti bj ti l ti
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and evaluated through high-resolution subjective evaluation
SubjectiveEvaluation
Chassis Guide
House of Quality
Characteristic CurvesMulti Body Simulation
SimulationCharacteristic CurvesObjectivation of steering behavior
Validation – Weave testValidation Weave test
Criteria: Steering Torque Build-up & Turn-in Feeling
Criteria: SmoothnessCriteria: Smoothness
Criteria: Steering Effort at Center Point
Criteria: Steering Precision
Overall Criteria: On-Center Feeling
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Source: IPG Automotive GmbH
SubjectiveEvaluation
Chassis Guide
House of Quality
M lti B d Si l tiMulti Body Simulation
C ass s Gu de
SimulationMulti-Body SimulationSecuring / covering consumer requirement in simulation
R l Vi t l Vi t l b h kReal vehicle
Virtual vehicle
Virtual benchmarkstudy
orce
_X [N
]
400
800
1200
1600
2000
Project: KnC Conversion DemoSkc-File: DemoKnC_Rear
Input File: 018713005001.txtDate: 2011/05/16
-2,0 -1,5 -1,0 -0,5 0,0 0,5 1,0 1,5 2,0 2,5Rear_LH_wheel_centre_X_disp. [mm]
Rea
r_LH
_whe
el_F
o
-2000
-1600
-1200
-800
-400
0
KnC-Measurement IPG KnC-Converter (before offset correction)
Comparison of KnC-Measurement and IPG KnC-Converter Output
RL Wheel Force X vs. RL Wheel Centre X disp
Systems Parameterization Vehicle
…
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characteristics Parameterization variations
SubjectiveEvaluation
Chassis Guide
House of Quality
M lti B d Si l tiMulti Body Simulation
SimulationMulti-Body SimulationVirtualization of real vehicle
Sim Tools: CarMaker ADAMS veDYNA
Vertical Dynamics
Sim-Tools: CarMaker, ADAMS, veDYNA
Single Events Ditch
Public Roads Uneven cross-country roads Ditch
Curb Different speed levels
Uneven cross-country roads Different excitation characteristics Uneven cross-country roads with curves Different speed levels Closed loop driven
These maneuvers allow efficient
Incorporation of “validated measurements” as targets into a virtual
These maneuvers allow efficientreproduction / simulation of thevibration DNA
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Incorporation of validated measurements as targets into a virtual vehicle model
SubjectiveEvaluation
Chassis Guide
House of Quality
M lti B d Si l tiMulti Body Simulation
C ass s Gu de
SimulationMulti-Body SimulationVirtual benchmark
SubjectiveRatings:
Roll Gain vs. Frequency
Benchmark: 9
Customer: 7Customer: 7
after digital
engineeringengineering
Modified: 8.5
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Target CorridorCustomer Modified Benchmark
SubjectiveEvaluation
Chassis Guide
House of Quality
M lti B d Si l tiMulti Body Simulation
C ass s Gu de
SimulationMulti-Body SimulationVirtual benchmark
SubjectiveRatings:
Steering Wheel Torque vs. Steering Wheel Angle
Benchmark: 9
Customer: 7
after digital
engineering
Modified: 8.5
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Target CorridorCustomer Modified Benchmark
SubjectiveEvaluation
Chassis Guide
House of Quality
Multi Body SimulationMulti Body Simulation
SimulationMulti-Body SimulationVirtual benchmark
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Lap time optimization
SubjectiveEvaluation
Ch i G id
House of Quality
Multi Body Simulation
Chassis Guide
SimulationMulti-Body SimulationVirtual benchmark
Speed Profile and Steering Effort
Real driver loss 0.5 secdue to risky section► Mental block
Virtual driver takes car closer to understeer limit► Perception problem► Perception problem
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SubjectiveEvaluation
Chassis Guide
House of Quality
Fi t i f V hi l DNAMulti Body Simulation
C ass s Gu de
SimulationFinetuning of Vehicle DNA“Characteristics” optimization
P tParametersTarget #1
Target #2
RegulatorTarget-area
Target #3
Target #4
Target #5
Target #6
Target #7
Linking component parameters (suspension stiffness etc.) with “validated characteristics”. Finding OEM targets / respecting brand or
Target #7
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g g p gvehicle model philosophy (vehicle DNA)
D i i th LHouse of Quality
SubjectiveEvaluation
Simulation
Design in the LoopImplementation
Chassis Guide
Multi Body Simulation
TIME TO MARKETKICK-OFF
C t CM k t A l iProduct
Concept CarFinal Concept Construction
Conception
Market Analysis
CoverageVirtual Concept Virtual Prototype
1st Prototyp Prototypes / Testing
Simulation
House of QualityChassis Guide Design in the Loop
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Simulation
Design in the LoopChassis Guide
House of Quality
SubjectiveEvaluation
Design in the LoopImplementation
KICK-OFF
Simulation
Multi Body Simulation
TIME TO MARKET
ProductConcept Car
Final Concept ConstructionMarket Analysis
Product Final Concept Construction
Vi t l C t Vi t l P t t
Conception
Si l tiCoverage
Virtual Concept Virtual Prototype
1st Prototyp Prototypes / Testing
Simulation
House of QualityChassis Guide Design in the Loop
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Simulation
House of Quality
SubjectiveEvaluation
Design in the LoopYour benefits
Simulation
Chassis Guide
Multi Body Simulation
Target / Obj ti
“First time right“ (before building a physical prototype) Saving precious development time Covering new car conceptsObjective Covering new car concepts “First time right” (90%) Minimize the risk of failing the market
Tools
St d di d t t d f bj ti & bj ti
QFD knowing designable customer wishes
Chassis Guide
Standardized test procedure for objective & subjective evaluation
Translation of subjective marks into objective scientific
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values for simulation
D i i th LChassis Guide
House of Quality
SubjectiveEvaluation
Design in the LoopSummary
Process Description in Chassis Development
Simulation
Multi Body Simulation
Objectivee.g. speed
ObservingRoadtest
Physicalaction chain
Process Description in Chassis Development
Customerrequirement
g p
Intermediate step
EvaluatingRigtestSimulation
Subjectivee.g. comfort Objectivation
p
Under-standingSimulationTrial
Decisive factor
DevelopingThe vehicle dynamics characteristicsare key in this context- Pitch, yaw, roll- Dynamic response to driving
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factormaneuvers…
Chassis Guide
House of Quality
SubjectiveEvaluation
Design in the Loop“Tailored Services”
Simulation
Chassis Guide
Multi Body Simulation
BasicPackage Chassis Guide
Chassis Guide Plus
(subjective AND objective evaluation process)ExtendedPackage
QFD (customer request)
Chassis Guide Chassis Guide QFD (customer wishes) Simulation (model building, virtual benchmark and
virtual development
PremiumPackage
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virtual development
We develop concepts and design suspension systems with the desired handling characteristics for the automotive industry. As concept consultants, we deliver advanced
h l i A “ d i ” h l i d l
Dieter ScharpeTechnische Universität DresdenInstitute for Automotive Technologies Dresden - IAD
approaches to solutions. As a “co-driver,” we help steer entire development processes and accompany our customers into new markets.
Thank you!
Dieter ScharpeChief Operating Officer
Institute for Automotive Technologies Dresden - IADChair of Automotive EngineeringGeorge-Bähr-Straße 1c01069 Dresden
Phone: +49(0)351-46334547Mobil: +49(0)170-2862728( )Fax: +49(0)351-46337066Email: [email protected]: http://tu-dresden.de/kft
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