Am Beispiel der Elektronik und Sensorik im · PDF file© Siemens VDO Automotive AG ... Electric Motor Wheel Brake Pads ... The Electronic Wedge Brake Principle. wedge power. normal

Technologie-

und Innovationstrends aus der Zuliefer-Perspektive

Neue

Fahrzeugkonzepte

erfordern

einen ganzheitlichen

Ansatz

in der

Integrationsstrategie

–

Am Beispiel

der

Elektronik

und Sensorik im

Fahrzeug

Bernd Gombert

© Siemens VDO Automotive AG | Bernd Gombert Munich Network – Mobilität "Trends auf der Straße", 28. November 2007

Megatrends

are influencing all business areas

Health

Water

Industry

Power

Mobility

Security

UrbanizationDemographic change


Improvement of vehicle reliability by managing the growing complexity of electronic architectures

Necessity to control increased complexity

Further penetration of existing safety systems (e.g. airbags, ESP)Advanced driver assistance systems (e.g. adaptive cruise control)

Increasing demand for safety Increasing need for in-car information

management

Increasing penetration of existing applications (e.g. navigation devices)More connectivity and integration of consumer electronic devices

Car of the future

Growing concern for the environment

Rising oil prices drive demand for improved fuel efficiencyCompliance with ever-higher emission standardsIncreased attractiveness of alternative propulsion concepts (e.g. hybrids)

Automotive industry needs to master fundamental technological challenges

Global megatrends

–

urbanization and demographic change

Automotive-specific trends

Increasing

mobility

Shortening of natural resources

Growing demand for safety and security, information, and communication

Shift of eco-

nomic

gravity among regions

Growing need

for environ-

mental care


Siemens VDO is perfectly aligned to capture the future opportunities of the automotive industry

Global megatrends

–

urbanization and demographic change

Automotive-specific trends

Increasing

mobility

Shortening of natural resources

Growing demand for safety and security, information, and communication

Shift of eco-

nomic

gravity among regions

Growing need

for environ-

mental care

Growing concern for the environment

Zero emission

Necessity to control increased

complexity

Managedcomplexity

Powertrain

Zero accidents

Increasing demand for safety

Safety and Chassis

Always on

Increasing need for in-car information

management

Interior Electronics and Infotainment

Commercial Vehicles

Vehicle Integration


The

carriageless

horse

When the pioneers of the automobile removed the horse to create the horseless carriage, they removed the intelligence as well. Now, through electronics and software, we can put the intelligence back in.

Coo

rdin

atio

n Le

vel

Com

man

d Le

vel

Exec

utio

n Le

vel


The Skateboard Principle: Chassis and Body


The Skateboard Principle: Chassis and BodyC

oord

inat

ion

Leve

l

Actuator commands

DrivetrainTranslation of desired motion

vector into actuator commands

Com

man

d Le

vel

Exec

utio

n Le

vel

* Human Machine Interface

AssistanceHMI*

Information about the environment

Information regarding desired

motion vector

3

1

4

52

Driver´s

Interface• Capture of Driver commands • Display of information to driver• Infotainment

Power and Signal Distribution• wiring harness• multiplexing• passive safety• entrance system

Drivetrain• Motion execution• Energy-creation and -management• Stability = reactive active safety

Passenger management(all non-driving related tasks)• radio / entertainment• heating / climate• passive safety ...

Virtual

Copilot ADAS• Predictive surrounding evaluation• Creation of the motion strategy based

on primary / redundant surrounding evaluation

3

1

4

5

2


Modularization as an answer to handle complexity and increase functionality

5

Assistantsystems

1 4

Drivetrain

/ Chassis 3

E/E Infrastructure 2

Driver´sInterface

Passenger Management

Driver´s

Interface• Capture of Driver commands • Display of information to driver• Infotainment

Power and Signal Distribution• wiring harness• multiplexing• passive safety• entrance system

Drivetrain• Motion execution• Energy-creation and -management• Stability = reactive active safety

Passenger management(all non-driving related tasks)• radio / entertainment• heating / climate• passive safety ...

Virtual

Copilot ADAS• Predictive surrounding evaluation• Creation of the motion strategy based

on primary / redundant surrounding evaluation

3

1

4

5

2


Car

Powertrain

Propulsion System Drive-Train Suspension Brakes

Electric Motor

WheelBrake Pads

Rim Tire

Control System Body Chassis

Valve Train

Engine

Exhaust System

Fuel System

Engine Block

Ignition System

Electrical System

Transmission / Gear box

Differential

Drive Shaft

ShocksShocks

SpringsSprings

BushingsBushings

Brake LinesBrake Lines

Master CylinderMaster Cylinder

Calipers / RotorsCalipers / Rotors

Steering

Derivation of the

eCorner

Car Architecture


eCorner

Car

Powertrain


Electric Motor

WheelBrake Pads

Rim Tire


Valve Train

Engine

Exhaust System

Fuel System

Engine Block

Ignition System

Electrical System


Differential

Drive Shaft

ShocksShocks

SpringsSprings

BushingsBushings




Steering

Recombination

of Components

to the

eCorner

Car


eCorner

Car

Powertrain


Electric Motor

WheelBrake Pads

Rim Tire


Valve Train

Engine

Exhaust System

Energy Source

Engine Block

Ignition System

Electrical System


Differential

Drive Shaft

ShocksShocks

SpringsSprings

BushingsBushings




Steering

Energy Generator

Recombination

of Components

to the

eCorner

Car


eCorner Car

eCorner

Energy Generator

Electrical Drive

Steering

Suspension


Drive Train

Energy Sourceinterior exterior

Brakes

Wheel

The

eCorner

Car Architecture

Example for a holistic integration strategy: The Electronic Wedge Brake


The Electronic Wedge Brake Principle

wedge power

normal powerOLD

NEW

Backup Battery

Yaw Rate Sensor

Actuator

Electronic Central Control Unit

Pedal Simulation Unit

EWB System

The wedge–

simple & effective

• The brake pad is moved by an electric motor via a series of rollers along a wedge-shaped slanting surface

• The rotation of the wheel automatically reinforces the effect of the wedgeA very high braking force can be produced with very little electric motor torque.

© Siemens VDO Automotive AG | Bernd Gombert Munich Network – Mobilität "Trends auf der Straße", 28. November 2007t

p

Low temperature

Roomtemperature

Δ t2

Δp2

Δp1

Δ t1

High µ

Low µ

!

Δ t2Δ t1 > >

ABS: Comparison of Control Strategiesp

EWB

EWB

HydraulicHigh µ

t

Hydraulic

Low µ

Shorter Stopping Distance with the EWB


Simulation and Real Testing

Traction

Control

on µ-split

with

18% uphill

gradient

Simulation Real TestingBraking

Tests


eCorner Car

eCorner

Energy Generator

Electrical Drive

Steering

Suspension


Drive Train

Energy Sourceinterior exterior

Brakes

Wheel

The

eCorner

Car Architecture

Example for a holistic integration strategy: The In-Wheel Motor


Ext. EPS & Chassis and Drivetrain Controller: Interaction of the segments

HEV

CE

BU C

CE

BU P

HEV

Brake Blendingfor recuperation

today

tomorrow

Electrical Power

EWB

eCorner

Brake

Controller

eChassis


First Approaches...


Lunar

Rover In-wheel

Motor Drive System

A Lunar Rover was used during Apollo missions 16 and 17. Altogether, three Rovers were used on the Lunar surface and driven a total of 88.3 kilometers (54.8 miles).


The

first

approaches

of the

Wheel Hub Motor

Porsche-Lohner

1898

- World exhibition, Paris 1900: Ferdinand Porsche introduces his new electro vehicle.

- September 1900: Lohner- Porsche with four wheel-hubs, the first fully-operative wheel- hub motor, with a battery- weight of 1800kg.

Wheel-hub motor, front wheel steering & drive, 2,5 PS/Motor, 44 cells battery, 300 Ah, up to 80 Volt, vmax = 50 km/h (35), s = 50 km, m = 1000 kg, 1st car with 4-wheel brake, mRad = 100 kg;

1900: Allwheel drive mBat = 1800 kg

1902: Hybrid with petrol motor

front wheel steering & drive

Allwheel drive

© Siemens VDO Automotive AG | Bernd Gombert Munich Network – Mobilität "Trends auf der Straße", 28. November 2007Source: Porsche AG Archive

1900

"Semper Vivus" (benzin- elektrischer Antrieb) / Mixte

1901

Porsche-Lohner- Mixte (15 PS-Daimler-

Vierzylinder-Benzin- Reihenmotor, 80 Volt-

Dynamo,2,5 PS Radnaben-

Elektromotoren in den Vorderrädern

1902

"Semper Vivus" Training zum Exelberg-Rennen(28 PS-Benzin-Reihenmotor und 80 Volt/10 kW-Generator)

1903

Elektro-Benzin-Chassis ohne großen Akkumulator

The

first

approaches

of the

Wheel Hub Motor


The

eCorner

(Movie)


New Generation -

In Wheel Hub Motor

Specification:150 NM torque60A / 400 V DC-link voltage400 Nm overboost for 20 s2000 rpmweight: 8kgDimension: fits into 17" wheelnon fluidic cooling


eCorner

Market Introduction

Strategies

of OEMs

Legend

Low

High

Legend

Low

High

Introduction dateIntroduction date

2011

2010

2012

2018

ConceptConcept

Fine N

FCXDual Note

Sequel

Quark

Next

Work on ECMWork on ECMOEMOEM InterestInterest Unsprung mass is a major drawback

Unsprung mass is a major drawback

2010High


Auto Motor Sport 2/2007


New Honda FCX Fuel

Cell

and Wheel Hub Motor Concept

Car

SOP 2009/10


PML Flightlink

supply wheels motors for ZAP


Electro-Mini and Lightning GT with wheel motors


Toyota Fine-X Fuel

Cell

and Wheel Hub Motor Concept

Car

SOP unknown

Electric Wheel Motor

Electric motors in each of the four wheelsCompact fuell-cell hybrid powertrainEach wheel can steer independently (90 degrees)for extraordinary maneuverabilit.It can rotate on its own axis a full 360 degrees


Impressions of Toyota Fine-X

© Siemens AG, Siemens VDO Automotive | Bernd Gombert

Thank's

for

your

attention


The

eCorner

–

drivers

and benefits

Benefits in comparison to conventional systemsSafety benefits (no steering column with steer-by-wire)More safety through driver assistance systemsDecrease in fuel costsCost reduction over the whole product life cycleBenefits for the environment: automobile without hydraulic liquidsPossibility of self-managed drivingMore freedom during the production: no difference between right-hand and left-hand steering due to flexible positioning of steering gear and steering column

Documents

Am Beispiel der Elektronik und Sensorik im · PDF file© Siemens VDO Automotive AG ... Electric Motor Wheel Brake Pads ... The Electronic Wedge Brake Principle. wedge power. normal