MAGIC BODY CONTROL
Seminar Guide, Presented by,
Mr. Jithu J Sooraj k
Asst. Professor Roll no:64
SCHEME OF PRESENTATION
Magic body control
Merits and demerits
What is suspension system?
System which isolating automobile from road
Consist of springs, dampers, Tires
Objective of suspension system
To prevent the road shocks transmitted
To safeguard occupants and passengers from
To preserve stability 3
WHY MAGIC BODY CONTROL?
With the world’s first suspension system with
Like riding on a flying carpet.
Satisfying all requirements.
A magical combination.
o Magic body control suspension system is an
electronically controlled active suspension system
o A stereo camera on the wind screen continually monitor the
oTogether with the information on the driving conditions, the
control unit continually calculates the best control strategy for
dealing with unevenness in the road
o Created by Mercedes-Benz
o Project Manager is Stefan Cytrynski.
Electronic control unit(ECU)
Hydraulic servo mechanism
Coil springs and Shock absorbers
Located on wind
monitor the road
surface ahead 15
ELECTRONIC CONTROL UNIT (ECU)
Calculates the current driving status
Independent controlling of shock absorbers
Used to store oil
Supplies the oil to the servomechanism as per
the command of ECU
The sensors continually monitor body movement
and vehicle level and supply the controller with new
data every ten milliseconds
Four level sensors, one at each wheel measure the
ride level of the vehicle
Three acceleration sensors called longitudinal,
lateral, vertical acceleration sensors
The Longitudinal Acceleration Sensor reports
acceleration and deceleration.
The Lateral Acceleration Sensor detects
transverse or side-to-side movements.
Three Vertical Acceleration Sensors detect lifting
motion and pitch and roll of the body.
HYDRAULIC SERVO MECHANISM
It is a mechanism that uses automatic feedback
and hydraulics to correct the performance of a
ECU directs the hydraulic servomechanisms on
how to correct the car's positioning.
COIL SPRINGS AND SHOCK ABSORBERS
Coil spring is the most common type of
spring found on modern vehicles
Low cost and compact size
Shock absorber keeps the suspension from
continuing to bounce after spring
compression and extension
The stereo camera scan the road surface and
provide corresponding signals to the ECU.
ECU determines the amount of pressure to be built
in servo mechanism according to various signals
The sensors and hydraulic servo mechanism generates
forces to counteract the effects of the road surface.
By these combination the suspension take action before
the wheels reach them.
Sensitive response and soft damping characteristics
The suspension level is automatically adjusted
depending on the road speed.
Vehicle is lowered by ten millimeters at speeds over
Shock absorbers have more stiffer response than
Vehicle is lowered by10 millimeters at speeds below
Besides these driving modes driver is able to select a
suspension setting raised by 30 millimeters.
Mercedes-Benz S class
Rolls Royce Ghost
Stability at all time
High level of ride comfort
Minimizing uncomfortable body movements
Successful elimination of roll and pitch
High initial cost
Malfunctioning can lead to a big collapse
Require super quick micro-computers
“Automobile engineering” by Dr. Kripal Singh
“Fast track” magazine
A journal on modern suspension systems by Ishan