摘要
为分析半主动悬架系统混合控制策略对车辆平顺性和道路友好性的影响,验证混合控制策略的实车应用可行性,在建立四自由度1/2车辆半主动悬架模型的基础上,利用MATLAB/Real-time Windows Target模块和自行开发的电控单元构建了硬件在环仿真平台,并利用上述平台开展了硬件在环仿真试验。研究表明,采用数学仿真方式,当天棚控制阻尼力分配系数取0.6时,混合控制策略可以有效兼顾车辆平顺性和道路友好性。与数学仿真相比,基于硬件在环的仿真模型前轮轮胎动载荷、后轮轮胎动载荷和车身垂向加速度均方根值变化很小,仿真结果较为吻合。
In order to analyze how the hybrid control strategy of semi-active suspension system affects ride quality and road-friendliness and verify the application of the proposed control strategy in real vehicles, we design a platform of hardware-in-the-loop for evaluating the proposed control strategy of semi-active suspension systems using a self-designed electronic control unit based on Freescale MC9S12XDP512 microcontroller and MATLAB/Real-time Windows Target toolbox, and then conduct a series of Hardware-in-the- Loop simulations using the platform. Form the mathematical simulation, it is shown that when the damping force coefficient of skyhook control equals to 0.6, the hybrid control strategy can achieve a balance between ride quality and road-friendliness. The root mean squares of front wheel dynamic tire force, rear wheel dynamic tire force and acceleration of sprung mass obtained in Hardware-in- the-loop simulation mode results were almost equal to those obtained in mathematical simulation mode.
出处
《青岛大学学报（工程技术版）》
CAS
2011年第4期48-52,共5页
Journal of Qingdao University(Engineering & Technology Edition)
基金
山东省优秀中青年科学家奖励基金资助项目(2010BSE01011)
