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All Wheel Drive Hardware Dependant Control

Malm, Jennie (2006) In MSc Theses
Department of Automatic Control
Abstract
Haldex Traction AB designs and manufactures an all wheel drive system called Haldex Limited Slip Coupling. A slip controller controls the speed differences between the front and rear shafts in the all wheel drive vehicle. The product exists in three generations and a fourth, with some major hardware differences, is under development. The variations in hardware lead to widely different demands on the control software of the slip controller. This master thesis presents a well-founded comparison between Generation I and IV from a control design perspective. Two models were made of the coupling, one for the two generations respectively, and simulated together with a simple vehicle model and a PID controller. The control parameters were tuned... (More)
Haldex Traction AB designs and manufactures an all wheel drive system called Haldex Limited Slip Coupling. A slip controller controls the speed differences between the front and rear shafts in the all wheel drive vehicle. The product exists in three generations and a fourth, with some major hardware differences, is under development. The variations in hardware lead to widely different demands on the control software of the slip controller. This master thesis presents a well-founded comparison between Generation I and IV from a control design perspective. Two models were made of the coupling, one for the two generations respectively, and simulated together with a simple vehicle model and a PID controller. The control parameters were tuned for a normal driving condition and then tested for different disturbances. The simulations show that the slip controller in Generation IV can be made faster due to less embedded delay in the coupling. Generation I on the other side is more robust to changes in friction between the tyres and the surface and is more stable for time delays from the CANbus. (Less)
Please use this url to cite or link to this publication:
author
Malm, Jennie
supervisor
organization
year
type
H3 - Professional qualifications (4 Years - )
subject
publication/series
MSc Theses
report number
TFRT-5772
ISSN
0280-5316
language
English
id
8847820
date added to LUP
2016-03-18 09:42:05
date last changed
2016-03-18 09:42:05
@misc{8847820,
  abstract     = {Haldex Traction AB designs and manufactures an all wheel drive system called Haldex Limited Slip Coupling. A slip controller controls the speed differences between the front and rear shafts in the all wheel drive vehicle. The product exists in three generations and a fourth, with some major hardware differences, is under development. The variations in hardware lead to widely different demands on the control software of the slip controller. This master thesis presents a well-founded comparison between Generation I and IV from a control design perspective. Two models were made of the coupling, one for the two generations respectively, and simulated together with a simple vehicle model and a PID controller. The control parameters were tuned for a normal driving condition and then tested for different disturbances. The simulations show that the slip controller in Generation IV can be made faster due to less embedded delay in the coupling. Generation I on the other side is more robust to changes in friction between the tyres and the surface and is more stable for time delays from the CANbus.},
  author       = {Malm, Jennie},
  issn         = {0280-5316},
  language     = {eng},
  note         = {Student Paper},
  series       = {MSc Theses},
  title        = {All Wheel Drive Hardware Dependant Control},
  year         = {2006},
}