智能算法对汽车半主动悬架的控制研究

Research on Intelligent Algorithm Control of Automobile Semi-active Suspension

车辆悬架对于车辆行驶时的平顺性和操控性都有直接影响,半主动悬架利用智能算法对悬架系统智能调节更能增加车辆在行驶时的平顺性。通过建立路面模型和悬架数学模型,分析了路面不平度函数和时域表达式。确定了悬架评价指标,然后通过建立误差动力学模型、切换面设计、模型确定三个步骤完成了悬架控制器的设计,最后针对汽车右前轮独立悬架系统使用Simulink可视化仿真软件等工具进行1/4悬架系统的仿真模拟分析,最终结合评价系统的三项指标得出仿真结果。通过算法设计与仿真分析,系统地分析了半主动悬架系统对汽车行驶状态的改善情况,为汽车半主动悬架的进一步发展提供资料和实验数据上的参考。

Vehicle suspension has a direct impact on the ride comfort and handling of the vehicle.Semi-active suspension uses intelligent algorithms to intelligently adjust the suspension system to increase the ride comfort of the vehicle.The article first established the road surface model and the suspension mathematical model,and analyzed the road surface roughness function and the time domain expression.The suspension evaluation index is determined,and then the suspension controller design is completed through three steps of establishing error dynamics model,switching surface design,and model determination.Finally,Simulink visual simulation software and other tools are used for the right front wheel independent suspension system of the car.The simulation analysis of 1/4 suspension system is carried out,and finally the simulation results are obtained by combining the three indicators of the evaluation system.Through algorithm design and simulation analysis,the semi-active suspension system is systematically analyzed to improve the driving state of the car,which provides information and experimental data reference for the further development of the car semi-active suspension.