Suspension and Active Safety Verification Jan van Deventer & - - PowerPoint PPT Presentation

Suspension and Active Safety Verification

Jan van Deventer & Peter Jeppsson Luleå University of Technology AstaZero Researchers Day Tuesday, April 14, 2015

Outline

• Overview
• Issues
• or, Window of opportunity
• Addressing issues
• what we currently are doing

OVERVIEW

Suspension and Active Safety Verification

Ice and Snow Tracks

http://www.arjeplog.se/toppmeny/film/isens-giganter.html

CASTT operation

Test area Plantskolan

DAIMLER BOSCH FIAT HALDEX GKN MANDO LAND ROVER KNORR-BREMSE BMW RENAULT PEUGEOT CITROËN ZF MAGNA POWERTRAIN AMERICAN AXLE BRIDGESTONE TRW RICARDO MAN OPEL FERRARI ALFA ROMEO AUDI VOLKSWAGEN SEAT SKODA LANCIA PORSCHE EVOBUS BORG WARNER PD&E HYUNDAI MOBIS MAGNA STEYR DUNLOP TECH PIRELLI CONTINENTAL TEVES

The World’s Elite meet Here

Active Safety with Base Brakes

• Anti-lock Braking System (ABS)
• Traction Control (TC)
• Electronic Stability Control (ESC)

ISSUES, OR
 WINDOW OF OPPORTUNITY


Suspension and Active Safety Verification

Vehicle Specific Optimization

AstaZero IDIADA Nardó

Test Standards

• ISO 3888. Test Track for a sever lane-change
• manoeuvre. (Double lane-change & Obstacle

avoidance)

• UN ECE R13H. Uniform provisions concerning the

approval of passenger cars with regard to braking

• Annex 9. Electronic stability control systems and

brake assist systems 


Production vehicles on the road

3.5+ Tons Vans & Cabs

Suspension Modification

European Commission Directives

• Europe saw a major step forward in vehicle safety
• n 1 November 2014 as new safety features

became mandatory for each new car, van, truck and bus sold in the EU, by virtue of application of the General Safety Regulation (EC) No 661/2009.

• Electronic Stability Control (ESC) must be fitted as

standard equipment on practically all new cars, vans, trucks and busses.

http://ec.europa.eu/enterprise/sectors/automotive/safety/index_en.htm

Some Issues

• Business aspect
• Who tests modified vehicles that we meet on the road?
• What needs to be tested?
• Where can one test modified vehicles?
• Research aspect
• Driving robot for ice and snow covered roads, as well as test

standards.

• Service System Integration: Suspension cooperating with

ESC for modified vehicles.

ADDRESSING ISSUES: WHAT WE CURRENTLY ARE DOING

Suspension and Active Safety Verification

Testing @ AstaZero

Training Future Engineers

Robot on a Handling Snow Track

Lane Change on Ice tracks

40 60 80 100 120 140 1 2 3 4 5 6 7 8 9 10 ESC on [m] [m] Reference tire Non studded tire Studded tire Desired path Front axle Rear axle Yaw angle

Figure 1 Doing a single lane change on ice using three different tires with the ESC system on.

Preparation for R13H test of mini bus with pneumatic suspension

Architecture for Services towards System Integration

Air Bladder Damper Air Compressor Micro Controller CANBUS Speed Steering Weight Diagnostics Programmation Inlet Valve Suspension Arm Level Sensor Outlet Valve Pressure Sensor Display Push Buttons Wheel Chair lock Humidity Sensor Temperature Sensor PWM TWI A/D Timer LED CAN LED LED A/D

• Ext. Int.

Future: Vehicle Dynamics Simulations Validation

• ISO (with the Swedish Standard Institute) is

developing standards for validating vehicle dynamics simulations with respects to real tests.

• Steady-state circular driving behaviour
• Sine and Dwell

Our research contributes to

• Validation of modified utility vehicles
• Architecture for Services towards System

Integration

• New and improved test standards
• Methods for validating simulation models
• Up-to-date graduate and undergraduate

education

Thank you for your attention.

deventer@ltu.se