SlideShare a Scribd company logo
Active suspension
1
Automotive Mechatronics
2161AU118
Under- Dr. V. Harish
By-Intakhab khan
VTP2984
Table of content
1. Introduction
2. Types of suspension and difference
3. Active suspension
• Introduction
• Components
• Working
• Vehicle performance
• Advantages
• Disadvantages
• Present vehicles using Active suspension
4. Other advancement
2
Introduction
• Suspension system is the system consisting springs, shock absorbers and
having linkages which is used to isolate sprung mass from the road shocks,
vibrations and provide stability. They consist of spring and damper spring
takes the vibrations and dampers reduces thee amplitude of vibration and
damp the vibration.
• Main functions of suspension system are
• To isolate body from road shocks
• To support the weight of the vehicle
• To provide smooth ride
• Allows rapid cornering without extreme body roll
• It helps to maintain the contact between road and tyre.
• Prevent squat during acceleration and dive during braking
• Gives particular height to vehicle body
• Maintains proper steering geometry
3
Types of suspension
Automotive suspension
Passive
suspension
Semi-Active
suspension
Active
suspension
4
Passive suspension: The old conventional suspension system are passive type in which damping and spring
rate are not changes as per real time working condition.
Semi –Active type suspension system: With the road conditions the damping coefficient is varied and give
comfortable rides for example MR fluid
Active Suspension system: Constantly road surface conditions are sensed that are fed into ECU which adjusts
the shock stiffness and spring rate improving ride performance, drivability, responsiveness, etc.
Difference between passive, semi active and active suspension
5
Active Suspension
• It is a real time adaptive suspension working on real
time road condition and varying the damping rates as
well as spring rate(changing the travel) as per the need
to offer comfortable ride.
• They use actuator to raise or lower the chassis at each
wheel as per time sensor reading of road condition
• Actuators are controlled by the on board computers
getting the input from sensors
• It "artificially" extends the design parameters of the
system by constantly monitoring and adjusting itself,
thereby changing its character on an ongoing basis.
6
Components of Active Suspension
• ECU(Electronic control unit) and
ESC(Electronic stability control)
• Stereo camera
• Pump
• Reservoir
• Sensors(Level sensors, speed sensor,
Inertial sensor, 3 axis acceleration
sensor, pressure sensors,
displacement sensors, steering
position sensor)
• Actuators for each suspension(Shock
absorbers with electrically variable
resistance and/or struts that can be
extended or retracted based on
electric signal input.) can be hydraulic
or electromagnetic
7
Block diagram
8
Working of active suspension
• Active suspension works by constantly sensing changes in the road surface and
feeding that information, via the ECU, to the outlying components. These
components then act upon the system to modify its character, adjusting shock
stiffness, spring rate and the like, to improve ride performance, drivability,
responsiveness, etc.
9
• While taking a turn the vehicle senses it by
steering sensor, speed of wheels and inertial
sensors senses yaw and roll and these signals
are sent to ECU then the ECU sends the signal
to the right servo present at the top of wheels
and increases the stiffness by providing more
amount of pressurized oil to increase the spring
rate and stiffen the suspension in the outer
side to prevent roll.
Working of active suspension
• While accelerating or decelerating the inertial
sensor senses it through accelerator pedal input
and wheel speed sensor and manages the
stiffness of the rear or front wheel to prevent
pitching. The feedback is taken from inertial
sensors.
10
• While cruising the vehicle height is decreased to
increase the stability by decreasing the centre of
gravity.
• To give the driver comfort there is the height
rise in Audi A8
• When the stereo camera reads any pothole the
wheels and the respective wheels are energized
to increase damping coefficient.
Working of active suspension
• In case of side collision height is increased to get the impact
on the portion with highly reinforced part of vehicle.
• While riding off-road as the drivers needs the height
increase the driver can do from the instrumental panel as in
GMC Hummer EV 2022. Level sensors gets the feedback and
correctly maintains the height.(149 mm)
11
The three acceleration sensor namely vertical, lateral and longitudinal senses
height rise, side movements and acceleration as well as deceleration respectively.
Level sensors acts as feedback sensors for level rise as well as reading during fall in
potholes. There are pressure sensors as well which are used as feedback sensor for
maintaining correct stiffness.
Stereo camera senses the road condition around 50m far(depending on
manufacturer) and ECU determines the amount of pressure maintained in the
suspension
The Hydraulic servo mechanism acts as counter effect based on road conditions
Vehicle performance
12
Vehicle performance
13
Vehicle performance
14
Vehicle performance
15
Advantages of active suspension
• Roll reduction while cornering
• Pitch reduction during braking and accelerating
16
Advantages of active suspension
• Camera recognizes the road surface unevenness and adjusts the suspension
• They also prevents axle wrap
17
Advantages of active suspension
• Detects the side crash and lifts the vehicle by 3-4 inches which will transfer the
load to more reinforced members of vehicle
• Better handling during side winds and less tyre wear
• Ground clearance and height increament is possible as
18
Advantages of active suspension
Ground clearance and height increment is possible in case of off road as height
reduction is possible to decrease the Centre of gravity and increase the stability
while cruising
19
Disadvantages of active suspension
• Costly
• Malfunction may lead to big collapse
• High maintenance
• Added complication
• Difficult to diagnose the error
• Requires super quick on board computers in the vehicle
20
Vehicles using active suspension
21
GMC HUMMER EV
Mercedes s class Rolls Royce Ghost
Audi A8
22
Mercedes S class
23
Other Advances
• Active wheel
Michelin's Active Wheel incorporates an in-wheel electrical suspension
motor that controls torque distribution, traction, turning maneuvers,
pitch, roll and suspension damping for that wheel, in addition to an in-
wheel electric traction motor.
Uses 2 hub motors one for driving and other for suspension
24
Thank you…..
Presented by INTAKHAB KHAN
VTP2984
Subject-Two and three wheeler technology
Under DR. PADMANABHAN S
25

More Related Content

What's hot

Unit 2 : Suspension System
Unit 2 : Suspension SystemUnit 2 : Suspension System
Unit 2 : Suspension System
Vishal Niphade
 
Electronic Brake force distribution (EBFD)
Electronic Brake force distribution (EBFD)Electronic Brake force distribution (EBFD)
Electronic Brake force distribution (EBFD)
Felis Goja
 
Frame and body of Automobile
Frame and body of AutomobileFrame and body of Automobile
Frame and body of Automobile
Ratnadeepsinh Jadeja
 
FOUR WHEEL STEERING SYSTEM
FOUR WHEEL STEERING SYSTEMFOUR WHEEL STEERING SYSTEM
FOUR WHEEL STEERING SYSTEM
Khadeer Kms
 
Vehicle Design construction
Vehicle Design constructionVehicle Design construction
Vehicle Design construction
Rajat Seth
 
Anti lock braking system
Anti lock braking systemAnti lock braking system
Anti lock braking system
Akash Singh
 
power steering system
power steering systempower steering system
power steering system
sonu bansal
 
Wheels and tyres for automobile
Wheels and tyres for automobileWheels and tyres for automobile
Wheels and tyres for automobile
sgrsoni45
 
Vehicle body
Vehicle bodyVehicle body
Vehicle body
sundara mahalingam v
 
Propeller shaft
Propeller shaftPropeller shaft
Propeller shaft
Peeyush Chauhan
 
PPT on Suspension system in automobiles By Pukhraj palariya
PPT on Suspension system in automobiles By Pukhraj palariyaPPT on Suspension system in automobiles By Pukhraj palariya
PPT on Suspension system in automobiles By Pukhraj palariya
pukhraj palariya
 
Suspension system
Suspension systemSuspension system
Suspension system
Yashodhan Agarwal
 
Automatic air suspension system
Automatic air suspension systemAutomatic air suspension system
Automatic air suspension system
praveeshkuttu
 
Finalsuspension
FinalsuspensionFinalsuspension
Finalsuspension
Shazaan Sayeed
 
ACTIVE SUSPENSION SYSTEM
ACTIVE SUSPENSION SYSTEMACTIVE SUSPENSION SYSTEM
ACTIVE SUSPENSION SYSTEM
Gagan Nir
 
2.frame
2.frame2.frame
Alignment for car
Alignment for carAlignment for car
Alignment for car
Mohamed Basyoni
 
Automobile Chassis
Automobile Chassis  Automobile Chassis
Automobile Chassis
PEC University Chandigarh
 
Active suspension system in automobile
Active suspension system in automobileActive suspension system in automobile
Active suspension system in automobile
narenume
 
rear axles.pptx
rear axles.pptxrear axles.pptx
rear axles.pptx
udaykumar435002
 

What's hot (20)

Unit 2 : Suspension System
Unit 2 : Suspension SystemUnit 2 : Suspension System
Unit 2 : Suspension System
 
Electronic Brake force distribution (EBFD)
Electronic Brake force distribution (EBFD)Electronic Brake force distribution (EBFD)
Electronic Brake force distribution (EBFD)
 
Frame and body of Automobile
Frame and body of AutomobileFrame and body of Automobile
Frame and body of Automobile
 
FOUR WHEEL STEERING SYSTEM
FOUR WHEEL STEERING SYSTEMFOUR WHEEL STEERING SYSTEM
FOUR WHEEL STEERING SYSTEM
 
Vehicle Design construction
Vehicle Design constructionVehicle Design construction
Vehicle Design construction
 
Anti lock braking system
Anti lock braking systemAnti lock braking system
Anti lock braking system
 
power steering system
power steering systempower steering system
power steering system
 
Wheels and tyres for automobile
Wheels and tyres for automobileWheels and tyres for automobile
Wheels and tyres for automobile
 
Vehicle body
Vehicle bodyVehicle body
Vehicle body
 
Propeller shaft
Propeller shaftPropeller shaft
Propeller shaft
 
PPT on Suspension system in automobiles By Pukhraj palariya
PPT on Suspension system in automobiles By Pukhraj palariyaPPT on Suspension system in automobiles By Pukhraj palariya
PPT on Suspension system in automobiles By Pukhraj palariya
 
Suspension system
Suspension systemSuspension system
Suspension system
 
Automatic air suspension system
Automatic air suspension systemAutomatic air suspension system
Automatic air suspension system
 
Finalsuspension
FinalsuspensionFinalsuspension
Finalsuspension
 
ACTIVE SUSPENSION SYSTEM
ACTIVE SUSPENSION SYSTEMACTIVE SUSPENSION SYSTEM
ACTIVE SUSPENSION SYSTEM
 
2.frame
2.frame2.frame
2.frame
 
Alignment for car
Alignment for carAlignment for car
Alignment for car
 
Automobile Chassis
Automobile Chassis  Automobile Chassis
Automobile Chassis
 
Active suspension system in automobile
Active suspension system in automobileActive suspension system in automobile
Active suspension system in automobile
 
rear axles.pptx
rear axles.pptxrear axles.pptx
rear axles.pptx
 

Similar to Active suspension

Hill Assist Control Seminar
Hill Assist Control SeminarHill Assist Control Seminar
Hill Assist Control Seminar
Amey Ekbote
 
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptxUNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
DineshKumar4165
 
Suspension, steering & braking system
Suspension, steering & braking system Suspension, steering & braking system
Suspension, steering & braking system
CrazyBeats1
 
k10772 shivkant tiwari
 k10772 shivkant tiwari k10772 shivkant tiwari
k10772 shivkant tiwari
jabi khan
 
Magic body suspension 1st
Magic body suspension 1stMagic body suspension 1st
Magic body suspension 1st
Bhushan Amar Shah
 
Design and Manufacturing of Gearbox for Four-Wheel Steering
Design and Manufacturing of Gearbox for Four-Wheel SteeringDesign and Manufacturing of Gearbox for Four-Wheel Steering
Design and Manufacturing of Gearbox for Four-Wheel Steering
IRJET Journal
 
CH-3 -MOTOR Grader
CH-3 -MOTOR GraderCH-3 -MOTOR Grader
CH-3 -MOTOR Grader
debasdessie
 
VTS-255.pptx
VTS-255.pptxVTS-255.pptx
VTS-255.pptx
ManishBej1
 
Transmission In Maruti cars
Transmission In Maruti carsTransmission In Maruti cars
Transmission In Maruti cars
Asha Kumari
 
Vehicle safety system in automobiles
Vehicle safety system in automobiles Vehicle safety system in automobiles
Vehicle safety system in automobiles
Praveen Kumar
 
Anti lock braking system
Anti lock braking systemAnti lock braking system
Anti lock braking system
4045YUGENDHIRANN19MS
 
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptxUNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
prakash0712
 
Unit iv-
Unit iv-Unit iv-
Unit iv-
MeganathanJ4
 
UNIT IV STEERING, BRAKES AND SUSPENSION SYSTEMS
UNIT IV    STEERING, BRAKES AND SUSPENSION SYSTEMS	UNIT IV    STEERING, BRAKES AND SUSPENSION SYSTEMS
UNIT IV STEERING, BRAKES AND SUSPENSION SYSTEMS
karthi keyan
 
Transmission system of Automobiles
Transmission system of AutomobilesTransmission system of Automobiles
Transmission system of Automobiles
PraveenManickam2
 
Abs
AbsAbs
GT ABS (2).ppt
GT ABS (2).pptGT ABS (2).ppt
GT ABS (2).ppt
AdityaKamdi1
 
K10888 ramratan malav (i c engine ppt)
K10888 ramratan malav (i c engine ppt)K10888 ramratan malav (i c engine ppt)
K10888 ramratan malav (i c engine ppt)
9672269693
 
ANTI LOCK BRAKING SYSTEM
ANTI LOCK BRAKING SYSTEMANTI LOCK BRAKING SYSTEM
ANTI LOCK BRAKING SYSTEM
Rajneesh Singh
 
Four wheel steering system
Four wheel steering systemFour wheel steering system
Four wheel steering system
rohan131994
 

Similar to Active suspension (20)

Hill Assist Control Seminar
Hill Assist Control SeminarHill Assist Control Seminar
Hill Assist Control Seminar
 
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptxUNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
 
Suspension, steering & braking system
Suspension, steering & braking system Suspension, steering & braking system
Suspension, steering & braking system
 
k10772 shivkant tiwari
 k10772 shivkant tiwari k10772 shivkant tiwari
k10772 shivkant tiwari
 
Magic body suspension 1st
Magic body suspension 1stMagic body suspension 1st
Magic body suspension 1st
 
Design and Manufacturing of Gearbox for Four-Wheel Steering
Design and Manufacturing of Gearbox for Four-Wheel SteeringDesign and Manufacturing of Gearbox for Four-Wheel Steering
Design and Manufacturing of Gearbox for Four-Wheel Steering
 
CH-3 -MOTOR Grader
CH-3 -MOTOR GraderCH-3 -MOTOR Grader
CH-3 -MOTOR Grader
 
VTS-255.pptx
VTS-255.pptxVTS-255.pptx
VTS-255.pptx
 
Transmission In Maruti cars
Transmission In Maruti carsTransmission In Maruti cars
Transmission In Maruti cars
 
Vehicle safety system in automobiles
Vehicle safety system in automobiles Vehicle safety system in automobiles
Vehicle safety system in automobiles
 
Anti lock braking system
Anti lock braking systemAnti lock braking system
Anti lock braking system
 
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptxUNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
UNIT-IV-STEERING, BRAKES AND SUSPENSION SYSTEMS.pptx
 
Unit iv-
Unit iv-Unit iv-
Unit iv-
 
UNIT IV STEERING, BRAKES AND SUSPENSION SYSTEMS
UNIT IV    STEERING, BRAKES AND SUSPENSION SYSTEMS	UNIT IV    STEERING, BRAKES AND SUSPENSION SYSTEMS
UNIT IV STEERING, BRAKES AND SUSPENSION SYSTEMS
 
Transmission system of Automobiles
Transmission system of AutomobilesTransmission system of Automobiles
Transmission system of Automobiles
 
Abs
AbsAbs
Abs
 
GT ABS (2).ppt
GT ABS (2).pptGT ABS (2).ppt
GT ABS (2).ppt
 
K10888 ramratan malav (i c engine ppt)
K10888 ramratan malav (i c engine ppt)K10888 ramratan malav (i c engine ppt)
K10888 ramratan malav (i c engine ppt)
 
ANTI LOCK BRAKING SYSTEM
ANTI LOCK BRAKING SYSTEMANTI LOCK BRAKING SYSTEM
ANTI LOCK BRAKING SYSTEM
 
Four wheel steering system
Four wheel steering systemFour wheel steering system
Four wheel steering system
 

More from INTAKHAB KHAN

Diesel fuel injection system
Diesel fuel injection systemDiesel fuel injection system
Diesel fuel injection system
INTAKHAB KHAN
 
Parallel Hybrid electric Vehicle-Honda Accord
Parallel Hybrid electric Vehicle-Honda AccordParallel Hybrid electric Vehicle-Honda Accord
Parallel Hybrid electric Vehicle-Honda Accord
INTAKHAB KHAN
 
Effect of stiffness in Vehicle dynamics
Effect of stiffness in Vehicle dynamicsEffect of stiffness in Vehicle dynamics
Effect of stiffness in Vehicle dynamics
INTAKHAB KHAN
 
Accelerometer sensor
Accelerometer sensorAccelerometer sensor
Accelerometer sensor
INTAKHAB KHAN
 
Controlled auto ignition
Controlled auto ignition Controlled auto ignition
Controlled auto ignition
INTAKHAB KHAN
 
Hybrid vehicle architecture
Hybrid vehicle architectureHybrid vehicle architecture
Hybrid vehicle architecture
INTAKHAB KHAN
 

More from INTAKHAB KHAN (6)

Diesel fuel injection system
Diesel fuel injection systemDiesel fuel injection system
Diesel fuel injection system
 
Parallel Hybrid electric Vehicle-Honda Accord
Parallel Hybrid electric Vehicle-Honda AccordParallel Hybrid electric Vehicle-Honda Accord
Parallel Hybrid electric Vehicle-Honda Accord
 
Effect of stiffness in Vehicle dynamics
Effect of stiffness in Vehicle dynamicsEffect of stiffness in Vehicle dynamics
Effect of stiffness in Vehicle dynamics
 
Accelerometer sensor
Accelerometer sensorAccelerometer sensor
Accelerometer sensor
 
Controlled auto ignition
Controlled auto ignition Controlled auto ignition
Controlled auto ignition
 
Hybrid vehicle architecture
Hybrid vehicle architectureHybrid vehicle architecture
Hybrid vehicle architecture
 

Recently uploaded

欧洲杯竞猜-欧洲杯竞猜下注平台-欧洲杯竞猜投注平台|【​网址​🎉ac44.net🎉​】
欧洲杯竞猜-欧洲杯竞猜下注平台-欧洲杯竞猜投注平台|【​网址​🎉ac44.net🎉​】欧洲杯竞猜-欧洲杯竞猜下注平台-欧洲杯竞猜投注平台|【​网址​🎉ac44.net🎉​】
欧洲杯竞猜-欧洲杯竞猜下注平台-欧洲杯竞猜投注平台|【​网址​🎉ac44.net🎉​】
arcosarturo900
 
按照学校原版(UniSA文凭证书)南澳大学毕业证快速办理
按照学校原版(UniSA文凭证书)南澳大学毕业证快速办理按照学校原版(UniSA文凭证书)南澳大学毕业证快速办理
按照学校原版(UniSA文凭证书)南澳大学毕业证快速办理
ggany
 
Dahua Security Camera System Guide esetia
Dahua Security Camera System Guide esetiaDahua Security Camera System Guide esetia
Dahua Security Camera System Guide esetia
Esentia Systems
 
Expanding Access to Affordable At-Home EV Charging by Vanessa Warheit
Expanding Access to Affordable At-Home EV Charging by Vanessa WarheitExpanding Access to Affordable At-Home EV Charging by Vanessa Warheit
Expanding Access to Affordable At-Home EV Charging by Vanessa Warheit
Forth
 
Charging Fueling & Infrastructure (CFI) Program by Kevin Miller
Charging Fueling & Infrastructure (CFI) Program  by Kevin MillerCharging Fueling & Infrastructure (CFI) Program  by Kevin Miller
Charging Fueling & Infrastructure (CFI) Program by Kevin Miller
Forth
 
欧洲杯下注-欧洲杯下注下注app-欧洲杯下注盘口app|【​网址​🎉ac22.net🎉​】
欧洲杯下注-欧洲杯下注下注app-欧洲杯下注盘口app|【​网址​🎉ac22.net🎉​】欧洲杯下注-欧洲杯下注下注app-欧洲杯下注盘口app|【​网址​🎉ac22.net🎉​】
欧洲杯下注-欧洲杯下注下注app-欧洲杯下注盘口app|【​网址​🎉ac22.net🎉​】
asjpkomrxo
 
原版制作(澳洲WSU毕业证书)西悉尼大学毕业证文凭证书一模一样
原版制作(澳洲WSU毕业证书)西悉尼大学毕业证文凭证书一模一样原版制作(澳洲WSU毕业证书)西悉尼大学毕业证文凭证书一模一样
原版制作(澳洲WSU毕业证书)西悉尼大学毕业证文凭证书一模一样
g1inbfro
 
世预赛下注-世预赛下注下注平台-世预赛下注投注平台|【​网址​🎉ac44.net🎉​】
世预赛下注-世预赛下注下注平台-世预赛下注投注平台|【​网址​🎉ac44.net🎉​】世预赛下注-世预赛下注下注平台-世预赛下注投注平台|【​网址​🎉ac44.net🎉​】
世预赛下注-世预赛下注下注平台-世预赛下注投注平台|【​网址​🎉ac44.net🎉​】
ahmedendrise81
 
gHSM Product Introduction 2022newdocumane.pdf
gHSM Product Introduction 2022newdocumane.pdfgHSM Product Introduction 2022newdocumane.pdf
gHSM Product Introduction 2022newdocumane.pdf
maicuongdt21
 
一比一原版皇家墨尔本理工大学毕业证(RMIT毕业证书)学历如何办理
一比一原版皇家墨尔本理工大学毕业证(RMIT毕业证书)学历如何办理一比一原版皇家墨尔本理工大学毕业证(RMIT毕业证书)学历如何办理
一比一原版皇家墨尔本理工大学毕业证(RMIT毕业证书)学历如何办理
pycfbo
 
Charging Fueling & Infrastructure (CFI) Program Resources by Cat Plein
Charging Fueling & Infrastructure (CFI) Program Resources by Cat PleinCharging Fueling & Infrastructure (CFI) Program Resources by Cat Plein
Charging Fueling & Infrastructure (CFI) Program Resources by Cat Plein
Forth
 
Catalytic Converter theft prevention - NYC.pptx
Catalytic Converter theft prevention - NYC.pptxCatalytic Converter theft prevention - NYC.pptx
Catalytic Converter theft prevention - NYC.pptx
Blue Star Brothers
 
一比一原版(UMich毕业证)密歇根大学|安娜堡分校毕业证如何办理
一比一原版(UMich毕业证)密歇根大学|安娜堡分校毕业证如何办理一比一原版(UMich毕业证)密歇根大学|安娜堡分校毕业证如何办理
一比一原版(UMich毕业证)密歇根大学|安娜堡分校毕业证如何办理
u2cz10zq
 
Charging and Fueling Infrastructure Grant: Round 2 by Brandt Hertenstein
Charging and Fueling Infrastructure Grant: Round 2 by Brandt HertensteinCharging and Fueling Infrastructure Grant: Round 2 by Brandt Hertenstein
Charging and Fueling Infrastructure Grant: Round 2 by Brandt Hertenstein
Forth
 
car rentals in nassau bahamas | atv rental nassau bahamas
car rentals in nassau bahamas | atv rental nassau bahamascar rentals in nassau bahamas | atv rental nassau bahamas
car rentals in nassau bahamas | atv rental nassau bahamas
justinwilson0857
 
一比一原版悉尼大学毕业证(USYD毕业证书)学历如何办理
一比一原版悉尼大学毕业证(USYD毕业证书)学历如何办理一比一原版悉尼大学毕业证(USYD毕业证书)学历如何办理
一比一原版悉尼大学毕业证(USYD毕业证书)学历如何办理
cenaws
 
按照学校原版(UTS文凭证书)悉尼科技大学毕业证快速办理
按照学校原版(UTS文凭证书)悉尼科技大学毕业证快速办理按照学校原版(UTS文凭证书)悉尼科技大学毕业证快速办理
按照学校原版(UTS文凭证书)悉尼科技大学毕业证快速办理
ggany
 
Kenwood DDX71/491/471/371/3108/30718/271/2071 User Manual
Kenwood DDX71/491/471/371/3108/30718/271/2071 User ManualKenwood DDX71/491/471/371/3108/30718/271/2071 User Manual
Kenwood DDX71/491/471/371/3108/30718/271/2071 User Manual
derekmelino
 
Top-Quality AC Service for Mini Cooper Optimal Cooling Performance
Top-Quality AC Service for Mini Cooper Optimal Cooling PerformanceTop-Quality AC Service for Mini Cooper Optimal Cooling Performance
Top-Quality AC Service for Mini Cooper Optimal Cooling Performance
Motor Haus
 
EV Charging at MFH Properties by Whitaker Jamieson
EV Charging at MFH Properties by Whitaker JamiesonEV Charging at MFH Properties by Whitaker Jamieson
EV Charging at MFH Properties by Whitaker Jamieson
Forth
 

Recently uploaded (20)

欧洲杯竞猜-欧洲杯竞猜下注平台-欧洲杯竞猜投注平台|【​网址​🎉ac44.net🎉​】
欧洲杯竞猜-欧洲杯竞猜下注平台-欧洲杯竞猜投注平台|【​网址​🎉ac44.net🎉​】欧洲杯竞猜-欧洲杯竞猜下注平台-欧洲杯竞猜投注平台|【​网址​🎉ac44.net🎉​】
欧洲杯竞猜-欧洲杯竞猜下注平台-欧洲杯竞猜投注平台|【​网址​🎉ac44.net🎉​】
 
按照学校原版(UniSA文凭证书)南澳大学毕业证快速办理
按照学校原版(UniSA文凭证书)南澳大学毕业证快速办理按照学校原版(UniSA文凭证书)南澳大学毕业证快速办理
按照学校原版(UniSA文凭证书)南澳大学毕业证快速办理
 
Dahua Security Camera System Guide esetia
Dahua Security Camera System Guide esetiaDahua Security Camera System Guide esetia
Dahua Security Camera System Guide esetia
 
Expanding Access to Affordable At-Home EV Charging by Vanessa Warheit
Expanding Access to Affordable At-Home EV Charging by Vanessa WarheitExpanding Access to Affordable At-Home EV Charging by Vanessa Warheit
Expanding Access to Affordable At-Home EV Charging by Vanessa Warheit
 
Charging Fueling & Infrastructure (CFI) Program by Kevin Miller
Charging Fueling & Infrastructure (CFI) Program  by Kevin MillerCharging Fueling & Infrastructure (CFI) Program  by Kevin Miller
Charging Fueling & Infrastructure (CFI) Program by Kevin Miller
 
欧洲杯下注-欧洲杯下注下注app-欧洲杯下注盘口app|【​网址​🎉ac22.net🎉​】
欧洲杯下注-欧洲杯下注下注app-欧洲杯下注盘口app|【​网址​🎉ac22.net🎉​】欧洲杯下注-欧洲杯下注下注app-欧洲杯下注盘口app|【​网址​🎉ac22.net🎉​】
欧洲杯下注-欧洲杯下注下注app-欧洲杯下注盘口app|【​网址​🎉ac22.net🎉​】
 
原版制作(澳洲WSU毕业证书)西悉尼大学毕业证文凭证书一模一样
原版制作(澳洲WSU毕业证书)西悉尼大学毕业证文凭证书一模一样原版制作(澳洲WSU毕业证书)西悉尼大学毕业证文凭证书一模一样
原版制作(澳洲WSU毕业证书)西悉尼大学毕业证文凭证书一模一样
 
世预赛下注-世预赛下注下注平台-世预赛下注投注平台|【​网址​🎉ac44.net🎉​】
世预赛下注-世预赛下注下注平台-世预赛下注投注平台|【​网址​🎉ac44.net🎉​】世预赛下注-世预赛下注下注平台-世预赛下注投注平台|【​网址​🎉ac44.net🎉​】
世预赛下注-世预赛下注下注平台-世预赛下注投注平台|【​网址​🎉ac44.net🎉​】
 
gHSM Product Introduction 2022newdocumane.pdf
gHSM Product Introduction 2022newdocumane.pdfgHSM Product Introduction 2022newdocumane.pdf
gHSM Product Introduction 2022newdocumane.pdf
 
一比一原版皇家墨尔本理工大学毕业证(RMIT毕业证书)学历如何办理
一比一原版皇家墨尔本理工大学毕业证(RMIT毕业证书)学历如何办理一比一原版皇家墨尔本理工大学毕业证(RMIT毕业证书)学历如何办理
一比一原版皇家墨尔本理工大学毕业证(RMIT毕业证书)学历如何办理
 
Charging Fueling & Infrastructure (CFI) Program Resources by Cat Plein
Charging Fueling & Infrastructure (CFI) Program Resources by Cat PleinCharging Fueling & Infrastructure (CFI) Program Resources by Cat Plein
Charging Fueling & Infrastructure (CFI) Program Resources by Cat Plein
 
Catalytic Converter theft prevention - NYC.pptx
Catalytic Converter theft prevention - NYC.pptxCatalytic Converter theft prevention - NYC.pptx
Catalytic Converter theft prevention - NYC.pptx
 
一比一原版(UMich毕业证)密歇根大学|安娜堡分校毕业证如何办理
一比一原版(UMich毕业证)密歇根大学|安娜堡分校毕业证如何办理一比一原版(UMich毕业证)密歇根大学|安娜堡分校毕业证如何办理
一比一原版(UMich毕业证)密歇根大学|安娜堡分校毕业证如何办理
 
Charging and Fueling Infrastructure Grant: Round 2 by Brandt Hertenstein
Charging and Fueling Infrastructure Grant: Round 2 by Brandt HertensteinCharging and Fueling Infrastructure Grant: Round 2 by Brandt Hertenstein
Charging and Fueling Infrastructure Grant: Round 2 by Brandt Hertenstein
 
car rentals in nassau bahamas | atv rental nassau bahamas
car rentals in nassau bahamas | atv rental nassau bahamascar rentals in nassau bahamas | atv rental nassau bahamas
car rentals in nassau bahamas | atv rental nassau bahamas
 
一比一原版悉尼大学毕业证(USYD毕业证书)学历如何办理
一比一原版悉尼大学毕业证(USYD毕业证书)学历如何办理一比一原版悉尼大学毕业证(USYD毕业证书)学历如何办理
一比一原版悉尼大学毕业证(USYD毕业证书)学历如何办理
 
按照学校原版(UTS文凭证书)悉尼科技大学毕业证快速办理
按照学校原版(UTS文凭证书)悉尼科技大学毕业证快速办理按照学校原版(UTS文凭证书)悉尼科技大学毕业证快速办理
按照学校原版(UTS文凭证书)悉尼科技大学毕业证快速办理
 
Kenwood DDX71/491/471/371/3108/30718/271/2071 User Manual
Kenwood DDX71/491/471/371/3108/30718/271/2071 User ManualKenwood DDX71/491/471/371/3108/30718/271/2071 User Manual
Kenwood DDX71/491/471/371/3108/30718/271/2071 User Manual
 
Top-Quality AC Service for Mini Cooper Optimal Cooling Performance
Top-Quality AC Service for Mini Cooper Optimal Cooling PerformanceTop-Quality AC Service for Mini Cooper Optimal Cooling Performance
Top-Quality AC Service for Mini Cooper Optimal Cooling Performance
 
EV Charging at MFH Properties by Whitaker Jamieson
EV Charging at MFH Properties by Whitaker JamiesonEV Charging at MFH Properties by Whitaker Jamieson
EV Charging at MFH Properties by Whitaker Jamieson
 

Active suspension

  • 1. Active suspension 1 Automotive Mechatronics 2161AU118 Under- Dr. V. Harish By-Intakhab khan VTP2984
  • 2. Table of content 1. Introduction 2. Types of suspension and difference 3. Active suspension • Introduction • Components • Working • Vehicle performance • Advantages • Disadvantages • Present vehicles using Active suspension 4. Other advancement 2
  • 3. Introduction • Suspension system is the system consisting springs, shock absorbers and having linkages which is used to isolate sprung mass from the road shocks, vibrations and provide stability. They consist of spring and damper spring takes the vibrations and dampers reduces thee amplitude of vibration and damp the vibration. • Main functions of suspension system are • To isolate body from road shocks • To support the weight of the vehicle • To provide smooth ride • Allows rapid cornering without extreme body roll • It helps to maintain the contact between road and tyre. • Prevent squat during acceleration and dive during braking • Gives particular height to vehicle body • Maintains proper steering geometry 3
  • 4. Types of suspension Automotive suspension Passive suspension Semi-Active suspension Active suspension 4 Passive suspension: The old conventional suspension system are passive type in which damping and spring rate are not changes as per real time working condition. Semi –Active type suspension system: With the road conditions the damping coefficient is varied and give comfortable rides for example MR fluid Active Suspension system: Constantly road surface conditions are sensed that are fed into ECU which adjusts the shock stiffness and spring rate improving ride performance, drivability, responsiveness, etc.
  • 5. Difference between passive, semi active and active suspension 5
  • 6. Active Suspension • It is a real time adaptive suspension working on real time road condition and varying the damping rates as well as spring rate(changing the travel) as per the need to offer comfortable ride. • They use actuator to raise or lower the chassis at each wheel as per time sensor reading of road condition • Actuators are controlled by the on board computers getting the input from sensors • It "artificially" extends the design parameters of the system by constantly monitoring and adjusting itself, thereby changing its character on an ongoing basis. 6
  • 7. Components of Active Suspension • ECU(Electronic control unit) and ESC(Electronic stability control) • Stereo camera • Pump • Reservoir • Sensors(Level sensors, speed sensor, Inertial sensor, 3 axis acceleration sensor, pressure sensors, displacement sensors, steering position sensor) • Actuators for each suspension(Shock absorbers with electrically variable resistance and/or struts that can be extended or retracted based on electric signal input.) can be hydraulic or electromagnetic 7
  • 9. Working of active suspension • Active suspension works by constantly sensing changes in the road surface and feeding that information, via the ECU, to the outlying components. These components then act upon the system to modify its character, adjusting shock stiffness, spring rate and the like, to improve ride performance, drivability, responsiveness, etc. 9 • While taking a turn the vehicle senses it by steering sensor, speed of wheels and inertial sensors senses yaw and roll and these signals are sent to ECU then the ECU sends the signal to the right servo present at the top of wheels and increases the stiffness by providing more amount of pressurized oil to increase the spring rate and stiffen the suspension in the outer side to prevent roll.
  • 10. Working of active suspension • While accelerating or decelerating the inertial sensor senses it through accelerator pedal input and wheel speed sensor and manages the stiffness of the rear or front wheel to prevent pitching. The feedback is taken from inertial sensors. 10 • While cruising the vehicle height is decreased to increase the stability by decreasing the centre of gravity. • To give the driver comfort there is the height rise in Audi A8 • When the stereo camera reads any pothole the wheels and the respective wheels are energized to increase damping coefficient.
  • 11. Working of active suspension • In case of side collision height is increased to get the impact on the portion with highly reinforced part of vehicle. • While riding off-road as the drivers needs the height increase the driver can do from the instrumental panel as in GMC Hummer EV 2022. Level sensors gets the feedback and correctly maintains the height.(149 mm) 11 The three acceleration sensor namely vertical, lateral and longitudinal senses height rise, side movements and acceleration as well as deceleration respectively. Level sensors acts as feedback sensors for level rise as well as reading during fall in potholes. There are pressure sensors as well which are used as feedback sensor for maintaining correct stiffness. Stereo camera senses the road condition around 50m far(depending on manufacturer) and ECU determines the amount of pressure maintained in the suspension The Hydraulic servo mechanism acts as counter effect based on road conditions
  • 16. Advantages of active suspension • Roll reduction while cornering • Pitch reduction during braking and accelerating 16
  • 17. Advantages of active suspension • Camera recognizes the road surface unevenness and adjusts the suspension • They also prevents axle wrap 17
  • 18. Advantages of active suspension • Detects the side crash and lifts the vehicle by 3-4 inches which will transfer the load to more reinforced members of vehicle • Better handling during side winds and less tyre wear • Ground clearance and height increament is possible as 18
  • 19. Advantages of active suspension Ground clearance and height increment is possible in case of off road as height reduction is possible to decrease the Centre of gravity and increase the stability while cruising 19
  • 20. Disadvantages of active suspension • Costly • Malfunction may lead to big collapse • High maintenance • Added complication • Difficult to diagnose the error • Requires super quick on board computers in the vehicle 20
  • 21. Vehicles using active suspension 21 GMC HUMMER EV Mercedes s class Rolls Royce Ghost
  • 24. Other Advances • Active wheel Michelin's Active Wheel incorporates an in-wheel electrical suspension motor that controls torque distribution, traction, turning maneuvers, pitch, roll and suspension damping for that wheel, in addition to an in- wheel electric traction motor. Uses 2 hub motors one for driving and other for suspension 24
  • 25. Thank you….. Presented by INTAKHAB KHAN VTP2984 Subject-Two and three wheeler technology Under DR. PADMANABHAN S 25