摘要
在车辆行驶平顺性的研究中,为弥补传统数学建模方法不能完全反映实际整车行驶动态特性的缺点,以多体动力学仿真软件SIMPACK为平台,建立某微型轿车的整车多体动力学模型。利用MATLAB设计基于八板块原理的半主动悬架模糊控制器,并进行基于SIMAT的联合仿真。仿真结果表明:车速为60 km/h时,与被动悬架系统相比,采用模糊控制的半主动悬架系统的车身垂直加速度、车身俯仰角速度和车身侧倾角速度均方根值分别降低12.99%、10.19%和11.05%。多体动力学仿真可实现模型非线性化,较全面反映整车动态特性;基于模糊控制的半主动悬架系统可消减车身振动,有效改善整车的行驶平顺性。
The traditional mathematical modeling approach can not fully reflect automotive dynamic characteristics.In order to make up for this weakness and to improve automotive ride comfort,a full mini-car multi-body dynamic model is built using multi-body dynamic simulation software SIMPACK.A fuzzy controller based on octa-plate control method is adopted to control the semi-active suspension.The SIMAT-based co-simulation is carried out.The results show that at the speed of 60 km/h,compared with passive suspension system,the RMS value of the body＇s vertical acceleration,pitch angular velocity and roll angular velocity are respectively reduced by 12.99 %,10.19 % and 11.05 %.Multi-body simulation method can realize model nonlinearity to reflect automotive dynamic characteristics even better.The semi-active suspension based on fuzzy controlling can effectively reduce vibration and improve automotive ride comfort.
出处
《噪声与振动控制》
CSCD
北大核心
2010年第6期87-90,共4页
Noise and Vibration Control
基金
国家自然科学基金资助项目(基金编号5:0475121)
关键词
振动与波
整车模型
半主动悬架
模糊控制
联合仿真
vibration and wave
full car model
semi-active suspension
fuzzy control
co-simulation
