Active Suspension Control to Improve Vehicle Ride and Handling
- 1 July 1997
- journal article
- research article
- Published by Taylor & Francis Ltd in Vehicle System Dynamics
- Vol. 28 (1), 1-24
- https://doi.org/10.1080/00423119708969346
Abstract
In practice most active vehicle suspension work can be traced to two sources, Lotus' modal control and Karnopp's skyhook damper. A model is developed which allows comparison of different active suspension control algorithms. The Lotus modal control algorithm is reviewed, and compared with Karnopp's skyhook damper. It is shown that a tight inner closed loop allows the Lotus algorithm to achieve the inertial damping described by Kamopp for a single comer or quarter car. It is suggested that to achieve simultaneously high inertial damping and good disturbance rejection an inner force loop is desirable. A vehicle control scheme is presented which combines the Lotus modal decomposition with Karnopp's skyhook damper, allowing nearly optimal ride and simultaneously permitting modification of vehicle handling properties.Keywords
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