Assessment of controllability–observability from the impedance matrix

Vibration suppression investigation and parametric design of tri-axle straight heavy truck with pitch-resistant hydraulically interconnected suspension

“…When the impedance and boundary conditions are integrated to the mechanical system, the additional damping term can be was conveniently obtained using the similar method as Stoura and Dimitrakopoulos (2020). Most importantly, the derived impedance matrix can be adopted to assess the controllability/observability (Whalley et al, 2001) for the valve controlled hydraulic subsystem when force-tracking-based impedance control approach (Ba et al, 2019) employed in our future active HIS research work. To the best of the authors' knowledge, a few studies concentrated on the parametric design for HIS suspension systems.…”

“…The higher roll stiffness generated by the HIS system can keep better motion trajectory even if tire is burst (Sathishkumar et al, 2020). Benefiting from no increase in bounce stiffness, the ride performance is not sacrificed after the vehicle is equipped with passive HIS system (Wilde et al, 2006). Mace (2004) derived the admittance matrices and investigated its dynamics by assuming ideal interconnections with the network theory and system synthesis.…”

“…This method was also used by Smith and Walker (2005) to explore potential benefits in independently assigning the mode stiffness/damping. Different from the assumption of ideal interconnections among the wheel stations (Sathishkumar et al, 2020; Wilde et al, 2006), Cao et al (2008) studied the dynamic characteristics in the time domain by considering the fluid pressure loss induced by pipelines and orifice flows. Zou et al (2019) modeled the pressure drop for typical fluid components and capture the fluid kinetic energy of the passive HIS system with energy regenerative shock absorber.…”