Design and Control of a Full-Scale Quarter Car Test Rig for Semi-Active Suspension System

Abdullah, Bahaa-Aldin R.; Hamzah, Mohsin Noori; Merza, Ammar S.

doi:10.30684/etj.37.10a.6

Cited by 1 publication

(1 citation statement)

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“…The skyhook system proposed in this study employs a two-state control scheme referred to as an ON-OFF control system. This approach toggles between high and low damping states to fulfill the necessary body comfort criteria [25]. Notably, it is essential to highlight that the semi-active damping force is correlated with the velocity of the sprung mass.…”

Section: Skyhook Control For the Sassmentioning

confidence: 99%

Enhancement of Vehicle Ride Quality Through Semi-Active Suspension: A Full-Scale Quarter-Car Test Rig Evaluation

Hamzah,

Merza,

Abdullah

2024

JISC

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In the pursuit of optimizing automotive suspension systems, a semi-active suspension system (SASS) utilizing continuous skyhook control has been developed to enhance vehicle ride comfort and handling. This system is specifically engineered to mitigate vibrations stemming from high-frequency road excitations. Central to this advancement is the introduction of an electrohydraulic (EH) damper, which is uniquely characterized by solenoid valves capable of adjusting the orifice size to modify damping characteristics. By tuning the damping ratio, the system effectively minimizes the positional oscillations of the sprung mass in response to road irregularities. The dynamic behavior of this damper is comprehensively modeled through a boundary model approach, ensuring precise simulation and prediction of performance. A full-scale quarter-car test platform was constructed to evaluate the dynamic response and the efficacy of various control strategies implemented within the SASS. The performance assessments were conducted using MATLAB Simulink to simulate the behavior of the system under skyhook control algorithms, which aim to maintain the chassis's vertical stability during disturbances. Comparative tests involving a single EH damper have demonstrated a high level of correlation with the simulated models, achieving a 95% agreement level. These findings underscore the capability of the SASS to surpass traditional hydraulic dampers in terms of performance, cost-efficiency, and versatility in testing applications. The insights garnered from this study not only validate the functionality of the proposed system but also contribute significantly to the body of knowledge in vehicle dynamics and control. This research provides a foundational framework for future exploration and potential implementation of advanced damping systems in the automotive industry.

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Section: Skyhook Control For the Sassmentioning

confidence: 99%