Vehicle Dynamics (eBook)

Martin Meywerk (Autor)

eBook Download: EPUB

2015
John Wiley & Sons (Verlag)
9781118971369 (ISBN)

Infos

• Comprehensively covers the fundamentals of vehicle dynamics with application to automotive mechatronics
• Presents a number of different design, analysis and implementation considerations related to automobiles, including power requirements, converters, performance, fuel consumption and vehicle dynamic models
• Covers the dynamics, modeling and control of not only the entire vehicle system, but also of key elements of the vehicle such as transmissions, and hybrid systems integration
• Includes exercise problems and MATLAB® codes
• Accompanied by a website hosting animations

Martin Meywerk is a Professor and the Head of the Institute of Automotive and Powertrain Engineering at Helmut-Schmidt-University (University of the Federal Armed Forces Hamburg) in Germany. He teaches courses in vehicle dynamics, automotive mechatronics, computer aided engineering and optimization. His research focuses on dynamic behaviour of vehicles and tyres, driving simulators and CAE-methods in automotive engineering.
Previously he has worked on research projects with Volkswagen, BMW, Daimler, Bast and other companies. He is the course instructor for a Massive Online Open Course (MOOC) in vehicle dynamics.

Textauszug

List of Abbreviations and Symbols

The tables on the following pages summarize the mathematical symbols and abbreviations used in this book. In most cases (but not in all), the indices used with the symbols indicate the following:

• vehicle
• body
• wheel
• tyre
• : , ,

Sometimes a symbol, which is needed only in a very local part of the book, could be used in another meaning than it is described in the following tabular, as well as sometimes the units can differ from those given in the tabular. Symbols that occur only in a small part of the book are not listed in the tabular.

Table 1 List of symbols

Symbol

Description

Units

Acceleration of the vehicle

m/s

Aerodynamic area

m

Tyre slip angle (or locally used angle)

rad

ABS

Anti-lock braking system

–

Clothoid parameter

m

ACC

Adaptive cruise control

–

Angle of inclination of the road

rad

Progression ratio of a transmission

1

,

Tyre slip angle ( front; rear)

rad

Average tyre slip angle ( front; rear)

rad

Inner tyre slip angle ( front; rear)

rad

Outer tyre slip angle ( front; rear)

rad

ASF

Active front steering

–

ASR

Anti-slip regulation

–

Vehicle sideslip angle

rad

Camber angle

rad

Cornering stiffness

N/rad

Mean cornering stiffness

N/rad

Aerodynamic drag coefficient

1

Aerodynamic lift coefficient ( front; rear)

1

CPVA

Centrifugal pendulum vibration absorber

–

Aerodynamic crosswind coefficient

1

DAE

Differential algebraic equations

–

Toe-in , toe-out

rad

Wheel load change at the inner wheel ;

( front; rear)

N

Wheel load change at the outer wheel ;

( front; rear)

N

Inertial reference frame

–

Efficiency of the differential

1

Efficiency of the engine

1

Mean efficiency of the engine

1

Efficiency of the

drivetrain (transmission and differential)

1

Mean efficiency of the drivetrain

(speed and torque converter, differential)

1

Efficiency of the th gear of

the transmission

1

ESP

Electronic stability programme

–

Table 2 List of symbols

Symbol

Description

Units

Tyre reference frame

–

Vehicle reference frame

–

Eccentricity at the wheel

m

Eccentricity at the wheels of axle

( front; rear)

m

Wheel reference frame,

perpendicular to the road plane

–

Aerodynamic drag in the longitudinal

N

direction for simplified models in longitudinal dynamics

Aerodynamic drag force in the -direction

N

for single track model and wheel load transfer

Aerodynamic drag force in the -direction

N

Aerodynamic lift force in the -direction

N

Basic demand of tractive force:

N

Frequency of the received signal

Hz

Gradient resistance

N

Combined gradient and inertial resistance

for

N

Ideal (demand) characteristic map of tractive force

N

Acceleration or inertial resistance

N

FMCW

Frequency modulated continuous wave

–

Rolling resistance coefficient

1

Frequency of the transmitted signal

Hz

Coefficients for approximation ()

1

Rolling resistance

N

Total tractive force demand:

N

Force supplied at the wheel from the powertrain for gear

N

Section force for tyre-road

N

Section force for tyre-road

N

( front; rear)

Section force (wheel load) ( front; rear)

N

Wheel load aerodynamic portion ( front; rear)

N

Wheel load static portion ( front; rear)

N

Table 3 List of symbols

Symbol

Description

Units

Wheel load dynamic portion ( front; rear)

N

Wheel or axle load in the -direction

N

Gravitational acceleration

m/s

Weight of the axle ( front; rear)

N

Weight of body (sprung mass)

N

Distance: centre of mass – road

m

Distance: centre of mass of the body – road

m

Distance: centre of mass – road

m

HP

Pump

–

Distance: Centre of pressure – road

m

for air flow in the -direction

HSV

High-pressure selector valve

–

Transmission ratio of the differential (final drive)

1

Transmission ratio of the gearbox;

1

for a stepped transmission:

Total transmission ratio

1

Transmission ratio of gear of the transmission,

1

Moment of inertia of the axle

kg m

Moment of inertia of gear, differential, Cardan shaft

kg m

Moment of inertia of engine, clutch

kg m

Moment of inertia of the vehicle with respect to the -axis

kg m

Angle of rotation of the body of the vehicle

rad

Instantaneous curvature () of the vehicle path

1/m

Wavenumber of an uneven road

rad/m

Wheelbase; distance between front and rear axle

m

Distance in...

Produkt-Details

• Erscheint lt. Verlag: 27.4.2015
• Reihe/Serie: Automotive Series
• Reihe/Serie: Automotive Series
• Reihe/Serie: Automotive Series
• Sprache: englisch
• Themenwelt: Technik ► Fahrzeugbau / Schiffbau
• Themenwelt: Technik ► Maschinenbau
• Schlagworte: Applied Mathematics in Engineering • Applied Mathmatics in Engineering • automotive engineering • Electrical & Electronics Engineering • Elektrotechnik u. Elektronik • Fahrdynamik • Fahrzeugtechnik • <p>Automotive</p> <p>Dynamics</p> <p>Vehicle</p> <p>Mechatronics</p> <p>Modeling</p> <p>Application</p> <p>Fuel consumption</p> <p>Wheel</p> <p>Driving Resistances</p> <p>Powertrain</p> <p>IC Engines</p> <p>Converters</p> <p>Hybrid Powertrains</p> <p>Tractive Forces</p> <p>Power</p> <p>Wheel loads</p> <p>Braking process</p> <p>Anti Lock Braking System</p> <p>Adaptive Cruise Control</p> <p>Anti Slip Regulation</p> <p>Oscillations</p> <p>Active Body Control</p> <p>Skyhook Dampers</p> <p>Skidpad</p> <p>Dynamic • Maschinenbau • Mathematics • Mathematik • Mathematik in den Ingenieurwissenschaften • mechanical engineering • Systems Engineering & Management • Systemtechnik • Systemtechnik u. -management
• ISBN-13: 9781118971369 / 9781118971369