关键词: CDC 减振器；半主动悬架；速度特性；仿真分析方法

Abstract: This study focuses on the Buick LaCrosse new energy vehicle, specifically addressing the specialized requirements of suspension systems in electric propulsion applications, with an in-depth investigation into the continuously damping control (CDC) damper within semi-active suspension architectures. Through disassembly and analysis of legacy damper units, the investigation delineates their internal architecture and operational principles. In response to market-identified demands for dynamic performance optimization, comprehensive research encompassing control strategy formulation, system modeling, and simulation verification is conducted. An innovative damping modulation methodology is proposed, featuring structural enhancements to conventional twin-tube damper configurations through an enhanced solenoid valve configuration and the integration of an external damping regulation module. Leveraging advanced simulation tools, multi-body dynamics modeling and co-simulation platforms are employed to generate operational datasets under diversified working conditions. These computational outcomes establish theoretical foundations for the application and refinement of the proposed CDC damper in Buick LaCrosse vehicles, experimentally validating the velocity-dependent characteristics inherent to CDC systems. Beyond providing quantifiable design methodologies for new energy vehicle suspension development, the modular design framework facilitates the adaptation of premium damping technologies to cost-sensitive vehicle segments, demonstrating significant engineering value in advancing the industrialization of active suspension systems.

Key words: CDC damper; semi-active suspension; velocity characteristics; simulation analysis method