The problem considered in this paper is the design and analysis of control strategies for semiactive suspensions in road vehicles. The most commonly used control algorithm is the well-known sky-hook (SH) damping. Recently, a new control approach named acceleration driven damping (ADD) has been developed, using optimal-control theory. It has been shown that SH and ADD have complementary characteristics: SH provides large benefits around the body resonance; otherwise performs similarly to a passive suspension; instead, ADD provides large benefits beyond the body resonance. The first goal of this paper is to show that—in their specific frequency domains—SH and ADD provide quasi-optimal performances, namely, that it is impossible to achieve (with the same semi-active shock-absorber) better performances. This result has been obtained using the framework of the optimal predictive control, assuming full knowledge of the disturbance. This result is very interesting since it provides a lower-bound to semi-active suspension performances. The second goal of the paper is to develop a control algorithm which is able to mix the SH and ADD performances. This algorithm is surprisingly simple and provides quasi-optimal performances.
Skip Nav Destination
Article navigation
July 2007
Technical Papers
Mixed Sky-Hook and ADD: Approaching the Filtering Limits of a Semi-Active Suspension
Sergio M. Savaresi,
Sergio M. Savaresi
Dipartimento di Elettronica e Informazione,
Politecnico di Milano
, Piazza L. da Vinci, 32, 20133, Milano, Italy
Search for other works by this author on:
Cristiano Spelta
Cristiano Spelta
Dipartimento di Elettronica e Informazione,
Politecnico di Milano
, Piazza L. da Vinci, 32, 20133, Milano, Italy
Search for other works by this author on:
Sergio M. Savaresi
Dipartimento di Elettronica e Informazione,
Politecnico di Milano
, Piazza L. da Vinci, 32, 20133, Milano, Italy
Cristiano Spelta
Dipartimento di Elettronica e Informazione,
Politecnico di Milano
, Piazza L. da Vinci, 32, 20133, Milano, ItalyJ. Dyn. Sys., Meas., Control. Jul 2007, 129(4): 382-392 (11 pages)
Published Online: November 20, 2006
Article history
Received:
June 1, 2005
Revised:
November 20, 2006
Citation
Savaresi, S. M., and Spelta, C. (November 20, 2006). "Mixed Sky-Hook and ADD: Approaching the Filtering Limits of a Semi-Active Suspension." ASME. J. Dyn. Sys., Meas., Control. July 2007; 129(4): 382–392. https://doi.org/10.1115/1.2745846
Download citation file:
Get Email Alerts
Offline and Online Exergy-Based Strategies for Hybrid Electric Vehicles
J. Dyn. Sys., Meas., Control (May 2025)
Multi Combustor Turbine Engine Acceleration Process Control Law Design
J. Dyn. Sys., Meas., Control
A Distributed Layered Planning and Control Algorithm for Teams of Quadrupedal Robots: An Obstacle-Aware Nonlinear Model Predictive Control Approach
J. Dyn. Sys., Meas., Control (May 2025)
Active Data-Enabled Robot Learning of Elastic Workpiece Interactions
J. Dyn. Sys., Meas., Control (May 2025)
Related Articles
Acceleration-Driven-Damper (ADD): An Optimal Control Algorithm For Comfort-Oriented Semiactive Suspensions
J. Dyn. Sys., Meas., Control (June,2005)
Analysis and Strategy for Superharmonics With Semiactive Suspension Control Systems
J. Dyn. Sys., Meas., Control (November,2007)
Application of Practical Observer to Semi-Active Suspensions
J. Dyn. Sys., Meas., Control (June,2000)
Nonlinear Parameters and State Estimation for Adaptive Nonlinear Model Predictive Control Design
J. Dyn. Sys., Meas., Control (April,2016)
Related Proceedings Papers
Related Chapters
QP Based Encoder Feedback Control
Robot Manipulator Redundancy Resolution
Non-Equidistance GOM Predictive Control System about Smelting
International Conference on Instrumentation, Measurement, Circuits and Systems (ICIMCS 2011)
A Nonlinear Model Predictive Control Strategy for Superheater Process in Thermal Power Plant
International Conference on Mechanical Engineering and Technology (ICMET-London 2011)