A New Adaptive Controller for Performance Improvement of Automotive Suspension Systems with MR Dampers

Khajepour, Amir; Agrawal, Ankur

doi:10.4271/2014-01-0052

Cited by 2 publications

(1 citation statement)

References 7 publications

(13 reference statements)

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“…In high-speed marches, the driver's position is expected to be comfortable, but for combat situations, it is expected that the weapon's position has the minimum vibration. In Binder and Khajepour, 17 Khajepour and Agrawal, 18 and Kim, 19 a coordinated control strategy has been introduced to control roll, pitch, and vertical motion of a passenger car using active and semi-active suspensions. In this study, the method is extended to tracked vehicles to simultaneously control both the vertical and pitch motions in any point of the vehicle.…”

Section: Introductionmentioning

confidence: 99%

A new coordinated control strategy for tracked vehicle ride comfort

Khajepour

Huang

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part K:

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To improve tracked vehicle ride comfort and minimize weapon's vibration, a coordinated control strategy is developed for tracked vehicles' semi-active suspension systems. A model with eight degrees-of-freedom for a tracked vehicle equipped with magnetorheological dampers is established, and is followed by the formulation of a sliding mode controller. The proposed control algorithm is a localized-based controller that can change its target location in the tracked vehicle to where it is needed most. A co-simulation system model including a six-wheel tracked vehicle multi-body dynamics model, coordinated control strategy, and magnetorheological damper force allocator is developed to analyze the ride performance under bump and random road excitations. The simulation results demonstrate that the proposed strategy is very effective in improving the vehicle's ride performance and is much better than the traditional skyhook controllers. The innovation of this paper can be concluded as the coordinated control strategy can simultaneously improve vertical acceleration and pitch acceleration for the hull, which is of great importance for combat situations.

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Section: Introductionmentioning

confidence: 99%

A new coordinated control strategy for tracked vehicle ride comfort

Khajepour

Huang

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part K:

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Control Strategy of Semi-Active Suspension Based on Road Roughness Identification

Feng,

Yin,

Xia

et al. 2024

Vehicle Dynamics, Stability, and NVH

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<div>Taking the semi-active suspension system as the research object, the forward model and inverse model of a continuous damping control (CDC) damper are established based on the characteristic test of the CDC damper. A multi-mode semi-active suspension controller is designed to meet the diverse requirements of vehicle performance under different road conditions. The controller parameters of each mode are determined using a genetic algorithm. In order to achieve automatic switching of the controller modes under different road conditions, a method is proposed to identify the road roughness based on the sprung mass acceleration. The average of the ratio between the squared sprung mass acceleration and the vehicle speed within a specific time window is taken as the identification indicator for road roughness. Simulation results show that the proposed road roughness identification method can accurately identify smooth roads (Class A–B), slightly rough roads (Class C), and severely rough roads (Class D–H). The designed multi-mode semi-active suspension controller automatically adapts to the identified road roughness, resulting in improved ride comfort on severely rough roads and improved handling performance on smooth roads. Finally, a real vehicle test is performed. The test results show that the proposed road roughness identification method can effectively distinguish between a well-paved roads and rough roads. In addition, the ride comfort of the vehicle is significantly improved in the comfort mode of the controller on rough roads.</div>

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A New Adaptive Controller for Performance Improvement of Automotive Suspension Systems with MR Dampers

Cited by 2 publications

References 7 publications

A new coordinated control strategy for tracked vehicle ride comfort

A new coordinated control strategy for tracked vehicle ride comfort

Control Strategy of Semi-Active Suspension Based on Road Roughness Identification

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