<div>The electrically interconnected suspension (EIS) is a novel suspension system
that has gained attention due to its potential to improve vehicle vibration
control. This article provides a comprehensive review of EIS and related
technologies. It starts with an overview of the research on hydraulic
interconnected suspension (HIS) and its limitations. Then, it discusses the
development of the electromagnetic suspension (EMS) and its advantages in
adjusting mechanical characteristics. The article focuses on the electrical
network and decoupling control characteristics of EIS, demonstrating the
principle of synchronous decoupling control of multiple vibration modes. A
comparison of the structure and control characteristics of EIS and HIS
highlights the advantages of EIS in vehicle vibration control. The article
concludes by identifying some unresolved issues and potential research areas to
guide future studies on EIS, such as improving the controllability and energy
efficiency of EIS systems.</div>