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.
