Real-time road testing and analysis of adjustable passive suspension system with variable spring stiffness

This research paper investigates the importance of adjustable passive suspension systems, with a particular emphasis on a novel variant employing variable spring stiffness. The study examines the implications of variable stiffness on ride comfort and handling across diverse road conditions through real-world trials conducted on a designated test vehicle. Utilizing sophisticated data analysis methodologies, the optimal stiffness configurations tailored to distinct road conditions are discerned, aiming to ascertain the efficacy of the system in augmenting overall vehicle performance and adaptability. Acknowledging potential challenges inherent in real-time adjustments and system intricacies, the paper aims to showcase the tangible benefits of variable spring stiffness technology. In the experimental findings, the first setting demonstrates optimal ride comfort and vehicle stability at low speed, while at medium speed, the second setting excels in both aspects. Conversely, at high speed, the fourth setting offers the best ride comfort and vehicle stability. Graphical abstract