Review and perspectives of control technology for X-by-wire chassis

With the rapid development of electronic control and intelligent driving, vehicle chassis systems are shifting from mechanical structures to X-by-wire architectures. X-by-wire chassis reduce vehicle mass through lightweight design and offer excellent control precision, fast dynamic response, and strong scalability, which are crucial for intelligent connected vehicles. This review systematically summarizes the research progress of key technologies in X-by-wire chassis, with a focus on the control strategies of three core systems: steer-by-wire, brake-by-wire, and suspension-by-wire, as well as cutting-edge achievements in integrated chassis control. At the subsystem level, issues such as high-precision tracking control, robust fault-tolerant control and its deep integration with autonomous driving are discussed in depth. At the vehicle level, multidimensional cooperative control methods aimed at enhancing vehicle stability are thoroughly elaborated, encompassing lateral-longitudinal, lateral-vertical, longitudinal-vertical, and lateral-longitudinal-vertical cooperative control strategies. Finally, future challenges and development trends of X-by-wire chassis are outlined to provide guidance for further research in related fields.