Parallel Active Link Suspension: Full Car Application With Frequency-Dependent Multiobjective Control Strategies

In this article, a recently proposed at basic level novel suspension for road vehicles, the parallel active link (PALS), is investigated in realistic scenario of sport utility vehicle (SUV) full car. The involved rocker-pushrod assembly generally optimized to maximize PALS capability improving performance. To fully release functions dealing with both low- and high-frequency cases, PID control scheme first employed chassis attitude stabilization, focusing on minimization roll pitch angles; based derived linear equivalent model PALS-retrofitted car, an $H_{\infty }$ designed enhance ride comfort holding; moreover, frequency-dependent multiobjective strategy that combines developed enable: 1) stabilization 0–1 Hz; 2) vibration attenuation 1–8 3) effort penalization (for energy saving) above 10 Hz. With group ISO-defined events tested, numerical simulation results demonstrate that, compared conventional passive suspension, has promising potential full-car application, up 70% reduction vertical acceleration speed bumps leveling 4.3-m/s 2 lateral acceleration.