FORCE CONTROL IN ELECTROHYDRAULIC ACTIVE SUSPENSIONS

Citation
Ag. Thompson et Pm. Chaplin, FORCE CONTROL IN ELECTROHYDRAULIC ACTIVE SUSPENSIONS, Vehicle System Dynamics, 25(3), 1996, pp. 185-202
Citations number
9
Categorie Soggetti
Engineering, Mechanical
Journal title
ISSN journal
00423114
Volume
25
Issue
3
Year of publication
1996
Pages
185 - 202
Database
ISI
SICI code
0042-3114(1996)25:3<185:FCIEAS>2.0.ZU;2-U
Abstract
For a simple vehicle active suspension system complete optimality and zero steady state body displacements may be achieved if the axle and b ody accelerations, and other easily measured quantities, are included in the performance index. Apart from not requiring an observer, this a lso allows the optimal feedback gains to be determined for an arbitrar y body spring rate. In a theoretical example, model parameters matchin g those of an experimental test rig are employed. The results of compu ter simulations, with and without an electrohydraulic servovalve and a ctuator, are compared to demonstrate the effects of inner loop gain on force control. Aspects of the system behaviour including lockup are c ommented upon.