This paper studies the effect of optimal damping control suspensions on vehicle ride performance. The gain matrix is developed from second-order equations with the road roughness represented by a stochastic process. With only velocities as the feedback signal, the number of unknowns and measurements is reduced leading to more efficiency in data processing. The control is implemented on a quarter-car model which includes the tire damping effect. The spectral density is compared with those for passive and fully active systems.
Issue Section:
Research Papers
1.
Chalasani, R. M., 1986, “Ride Performance Potential of Active Suspension Systems—Parts I & II,” Symposium on Simulation & Control of Ground Vehicles and Transportation Systems, ASME WAM, AMD-Vol. 80, DSC-Vol. 2, pp. 187–234.
2.
Crosby, M. J., and Karnopp, D., 1973, “The Active Damper—A New Concept for Shock and Vibration Control,” 43th Shock and Vibration Bulletin, Part 4, pp. 119–133.
3.
Elmadany
E. L.
1988
, “Stochastic Optimal Control of Highway Tractors with Active Suspensions
,” Vehicle System Dynamics
, Vol. 17
, pp. 193
–210
.4.
Hrovat
D.
1993
, “Applications of Optimal Control to Advanced Automotive Suspensions Design
,” ASME Journal of Dynamic Systems, Measurement, and Control
, Vol. 115
, pp. 328
–342
.5.
Levitt
J. A.
Zorka
N. G.
1991
, “The Influence of Tire Damping in Quarter Car Active Suspension Model
,” ASME Journal of Dynamic Systems, Measurement, and Control
, Vol. 113
, pp. 134
–137
.6.
Lieh
J.
1992
, “Optimal Damping Control of Second-Order Dynamic Systems with Cross Effects in the Performance Index
,” ASME WAM, Active Control of Noise and Vibration
, DSC-Vol. 38
, pp. 127
–130
.7.
Lieh
J.
1993
, “The Effect of Bandwidth of Semiactive Dampers on Vehicle Ride
,” ASME Journal of Dynamic Systems, Measurement, and Control
, Vol. 115
, pp. 571
–574
.8.
Oueslati, P., and Sankar, S., 1994, “Optimization of a Tractor-Semitrailer Passive Suspensions Using Covariance Analysis Technique,” SAE Paper No. 942304.
9.
Petek, N. K., et al., 1995, “Demonstration of an Automotive Semi-Active Suspensions Using Electrorheological Fluid,” SAE SP-1074, Paper No. 950586, pp. 237–242.
10.
Salman
M. A.
Lee
A. Y.
Boustany
N. M.
1990
, “Reduced Order Design of Active Suspensions Control
,” ASME Journal of Dynamic Systems, Measurement, and Control
, Vol. 112
, pp. 604
–610
.11.
Shiozaki, M., et al., 1991, “High Speed Control of Damping Force Using Piezoelectric Elements,” SAE SP-861, Paper No. 910661.
12.
Sussman
N. E.
1974
, “Statistical Ground Excitation Models for High Speed Vehicle Dynamic Analysis
,” High Speed Ground Transportation Journal
, Vol. 8
, No. 3
, pp. 145
–154
.13.
Thompson, A. G., et al, 1985, “Active Suspensions with Vibration Absorbers and Optimal Output Feedback Control,” SAE Paper No. 841253, pp. 5.698–5.707.
14.
Thirupathi, S. R., and Naganathan, N. G., 1995, “A New Class of Smart Automotive Active Suspensions Using Piezoceramic Actuation,” SP-1074, Paper No. 950588, pp. 251–261.
15.
Yue
C.
Butsuen
T.
Hedrick
J. K.
1989
, “Alternative Control Laws for Automotive Active Suspensions
,” ASME Journal of Dynamic Systems, Measurement, and Control
, Vol. 111
, pp. 286
–291
.
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