Position control of parallel active link suspension with backlash
File(s)Accepted Version.pdf (2.03 MB)
Accepted version
Author(s)
Yu, Min
Evangelou, Simos
Dini, daniele
Type
Journal Article
Abstract
In this paper, a position control scheme for the novel Parallel Active Link Suspension (PALS) with backlash is developed to enhance the vehicle ride comfort and road holding. A PALS-retrofitted quarter car test rig is adopted, with the torque flow and backlash effect on the suspension performance analyzed. An elastic linear equivalent model of the PALS-retrofitted quarter car, which bridges the actuator position and the equivalent force between the sprung and unsprung masses, is proposed and mathematically derived, with both the geometry and backlash nonlinearities compensated. A position control scheme is then synthesized, with an outer-loop H∞ control for ride comfort and road holding enhancement and an inner-loop cascaded proportional-integral control for the reference position tracking. Experiments with the PALS-retrofitted quarter car test rig are performed over road cases of a harmonic road, a smoothed bump and frequency swept road excitation. As compared to a conventional torque control scheme, the newly proposed position control maintains the performance enhancement by the PALS, while it notably attenuates the overshoot in the actuator’s speed variation, and thereby it benefits the PALS with less power demand and less suspension deflection increment.
Date Issued
2019-07-31
Date Acceptance
2019-06-25
Citation
IEEE Transactions on Industrial Electronics, 2019, 67 (6), pp.4741-4751
ISSN
0278-0046
Publisher
Institute of Electrical and Electronics Engineers
Start Page
4741
End Page
4751
Journal / Book Title
IEEE Transactions on Industrial Electronics
Volume
67
Issue
6
Copyright Statement
© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Sponsor
China Scholarship Council
Engineering & Physical Science Research Council (EPSRC)
Identifier
https://ieeexplore.ieee.org/document/8782825
Grant Number
201406320205
EP/N025954/1
Subjects
Electrical & Electronic Engineering
08 Information and Computing Sciences
09 Engineering
Publication Status
Published
Date Publish Online
2019-07-31