Exploring and Comparing Control Strategies for a Novel Double Damper Suspension System

Abstract

<div>In the highly competitive landscape of the automotive industry, enhancing ride comfort has become a paramount challenge for automakers. To address this challenge, a novel double damper suspension system has been investigated. This system, featuring two single dampers operating collaboratively as an integrated unit, is analyzed with a dual focus: a comprehensive comparison of various control algorithms to identify the one offering superior comfort and the experimental validation of these findings. The modeling process, executed in Simulink, encompasses the representation of pressure, discharge, and force equations, along with the development and testing of multiple control algorithms. The study employs a shock dynamometer, utilizing both the double damper and a single semi-active damper as test subjects in a pseudo-quarter-car test bed setup. Throughout the experimental phase, solenoid actuation in the dampers is guided by specific control logic, utilizing acceleration data for the sprung and unsprung masses. Results demonstrate that the double damper significantly enhances road holding and ride comfort compared to a single damper concept. The study encompasses a spectrum of control algorithms, including Skyhook Control, Groundhook Control, ADD Control, and PID Control. Notably, PID Control emerges as the most balanced algorithm in terms of comfort improvement. Crucially, the experimental results validate the effectiveness of the proposed double damper system. This research positions the double damper concept as a promising and viable alternative for automakers seeking to elevate comfort levels of their vehicles among a competitive market.</div>