Description by mechanical engineering seminar report

1. Active Suspension System

2. Suspension Systems
 Conventional suspension system
 Active suspension system

3. Parameters that can be improved
 Ride Control
 Height Control
 Roll Control
 Dive Control
 Squat Control

4. COMPONENTS
A Computer or an electronic control unit
(ECU)
Sensors
Actuator or Servo
Adjustable shocks and springs

6. Sensors And Controller

7. Functions of Active Suspension
 Improves driver control, safety and stability, with or
without a load .
 Eliminates sway and reduces roll on corners
 Reduces axle wrap
 Maximum safety
 Absorbs load, rather than resisting it, thereby
ensuring a much more comfortable ride
 Eliminates the need for fitting extra blades which
harden the ride
 Better handling and control in windy and rough road
conditions
 Minimize wear on tires, shocks, shackles and leaf
springs

8. Roll on Corners

10. DESCRIPTION OF THE PREFERRED EMBODIMENT

11. Active suspension mimics the
functions of the human body
 The sensors are nerve ends
 The Electronic Control Unit represents our
mind
 Wires connecting the whole thing are the
central nervous system
 The servos and actuators resemble the muso-
skelatel portion .

13. Example
Mercedes CL coupe

14. Draw-backs
Need for a large external power source
Complex control algorithms
Complex closed-loop control systems.
Requirement of fast-acting devices
Increased cost

15. Conclusion
In the case of active suspension
system, as in any other innovations of
automotive technology, today's innovation is
tomorrow's standard feature. Inspite of its high
initial cost, let us expect to see them in the
Indian roads soon. The trickle-down effect
will take some time, but it'll happen and when
such a time comes we can expect much lesser
accidents, less fatalities and more comfort in
driving the roads.