This paper presents the design of an active suspension controller for an automotive vehicle. A four degrees of freedom linear model is used to represent a vehicle with different front and rear characteristics. Filtered road and acceleration inputs are applied to the model to simulate real life use. The performance criterion are filtered to include frequency sensitivity and weighted based on a standard passive suspension system. Independent front and rear controllers are optimised with the genetic algorithm. The controller includes linear gains and frequency dependency to take advantage of these two different control methods. The number of sensors and the order of the filters are limited to facilitate implementation on a real vehicle.

1.
Baumal
A. E.
;
McPhee
J. J.
;
Calamai
P. H.
; (
1998
)
Application of Genetic Algorithms to the design optimisation of an active vehicle suspension system
.
Comput Method Appl Mech Engrg
163
, pp.
87
94
2.
Chalassani, R.M.; (1986) Ride performance potential of active suspension system part I : Simplified analysis based on a quarter-car model. Symposium on simulation and control of ground vehicle and transportation systems : AMD-80(DSC.2), pp. 187–204
3.
Bouazara, Mohamed; (1991) L’influence des parame`tres de suspension sur le comportement d’un ve´hicule. Maiˆtrise e`s sciences (M. Sc.). Que´bec / Universite´ Laval / 105p.
4.
Robson
J. D.
; (
1979
)
Road surface description and vehicle response
.
International Journal of Vehicle Design
,
1
:
25
35
5.
Fisher
Daniel
;
Isermann
Rolf
; (
2003
)
Mechatronics semi-active and active vehicle suspensions
.
Control Engineering Practice
: Volume
12
, pp.
1353
1367
.
6.
Hrovat
D.
; (
1997
)
Survey of Advanced Suspension Developments and Related Optimal Control Applications
.
Automatica
: Volume
33
(Nume´ro
10
), pp.
1781
1817
.
7.
Gordon
T. J.
; (
1995
)
Non-Linear Optimal Control of a Semi-Active Vehicle Suspension
.
Chaos, Solitons, & Fractals
: Volume
5
(Nume´ro
9
), pp.
1603
1617
.
8.
Ben Mrad
R.
;
Levitt
J. A.
;
Fassois
S. D.
; (
1994
)
Non-linear dynamic modeling of an automobile hydraulic active suspension system
.
Mechanical Systems and Signal Processing
: Volume
8
(Nume´ro
5
), pp.
485
517
.
9.
Donahue, Mark D.; (1998) Implementation of an Active Suspension, Preview Controller for Improved Ride Comfort. Master of science (Plan II). Boston University : Berkeley / University of California at Berkeley, 85p.
10.
Mitsuo, Gen; Runwei, Cheng; (1997) Genetic Algorithms & Engineering Design, United States : John Wiley & Sons, 411p.
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