CAJ | 학술논문

针对传统主动悬架所需动力源的功率较大，进而导致其成本昂贵、结构复杂等问题，以并联三档阻尼可调减振器的车辆全主动悬架系统作为研究对象，分别设计了“软”、“中”、“硬”三种阻尼工作模式，根据车辆实际行驶工况，确定了阻尼工作模式间切换控制规则。基于Simulink/Stateflow进行了阻尼多模式切换控制系统的设计及性能仿真，在有效的阻尼切换控制系统基础上，根据不同阻尼工作模式下所侧重的悬架性能指标，分别设计了针对性的主动悬架作动力最优控制器。基于两种典型的道路行驶工况，对系统全局控制能力以及作动力最优控制器的局部有效性进行了仿真分析，仿真结果表明，所设计的控制系统能够有效提高车辆在不同道路行驶工况的综合性能，其中，车身垂直加速度降幅最高可达10.45%，车轮动载荷降幅最高可达9.46%。与此同时，系统所需的主动控制力相对于无阻尼切换控制降低了13.33%，减少了系统能量消耗。
침대전통주동현가소수동력원적공솔교대，진이도치기성본앙귀、결구복잡등문제，이병련삼당조니가조감진기적차량전주동현가계통작위연구대상，분별설계료“연”、“중”、“경”삼충조니공작모식，근거차량실제행사공황，학정료조니공작모식간절환공제규칙。기우Simulink/Stateflow진행료조니다모식절환공제계통적설계급성능방진，재유효적조니절환공제계통기출상，근거불동조니공작모식하소측중적현가성능지표，분별설계료침대성적주동현가작동력최우공제기。기우량충전형적도로행사공황，대계통전국공제능력이급작동력최우공제기적국부유효성진행료방진분석，방진결과표명，소설계적공제계통능구유효제고차량재불동도로행사공황적종합성능，기중，차신수직가속도강폭최고가체10.45%，차륜동재하강폭최고가체9.46%。여차동시，계통소수적주동공제력상대우무조니절환공제강저료13.33%，감소료계통능량소모。
Considering the problem of high required power source of traditional active suspension, which results in high cost and complex structures, the active suspension system with paralleled three gear adjustable damper was taken as the research object. Three working modes, namely ‘soft',‘medium' and ‘hard' damping modes were designed respectively. According to the actual vehicle driving condition, switching control rules between damping modes were determined. By using Simu-link/Stateflow, the damping multi-modal switching control system was established, and performance simulation was conducted. On the basis of effective damping switching control system, targeted opti-mal controllers of active force were designed respectively according to the focused suspension per-formance indicators under different damping working modes. On the foundation of two typical road driving conditions, general control abilities of the system and partial effectiveness of active force op-timal controllers were simulated. The results showed that designed control system could effectively enhance the overall performance of the vehicle suspension under different driving conditions, of which the body vertical acceleration drop can be up to 10.45% and the wheel dynamic load drop can be up to 9.46%. At the same time, compared to undamped switching control, the needed ac-tive force was decreased by 13.33%, which led to low system energy consumption.