摘要
难以获得路况信息是影响半主动悬架控制性能的重要因素。进行了依据车载导航系统探测和记忆路况信息,半主动悬架据此信息提前切换到相应控制策略或阻尼的初步研究。设计了半车天棚控制器,在随机路面采用天棚控制,当导航仪探测到前方障碍时,则提前通知悬架控制器切换到小阻尼状态,从而降低振动的峰值,提高行驶的平顺性。仿真计算证明了这种思路的有效性。研制了车载导航系统并设计了路况等级探测和记忆查找的策略,实车试验取得了和仿真相近的效果。
One of the important factors affecting the performances of semi-active suspension control is how to obtain the terrain information. A preliminary study is conducted to detect and memory the road conditions by which semi-active suspension switches control strategies or certain damping from one to another. The suspension adopts skyhook controllers designed for halfvehicle model in random road and uses small damping while passing an obstacle. The navigator advance informs the suspension controller as soon as it detects obstacles in front. Then the controller switches to small damping,thereby reducing the peak vibration and improve driving ride. Simulation proves the validity of this idea. Experiment using a real car is conducted after an onboard navigation system developed and the road conditions detection and memory search strategies are available. The experiment and simulation achieve similar results.
出处
《机械强度》
CAS
CSCD
北大核心
2015年第4期587-592,共6页
Journal of Mechanical Strength
基金
江苏省高校优秀中青年教师和校长境外研修计划
中国博士后科学基金项目(2011M500935)资助~~
关键词
半主动悬架
车载导航系统
协调控制
天棚控制
控制切换
Semi-active suspension
Onboard navigation system
Coordinated control
skyhook control
Control switch
