The invention relates to the field of vehicle suspension systems, and discloses a variable-period vehicle active suspension system control method based on road surface estimation, in the method, an FNT network is used for grading roads, structure optimization is carried out on the FNT through a GP algorithm, parameter optimization is carried out on the FNT through a PSO algorithm, and the method is suitable for road classification of any given suspension control strategy; a universal control period adjustment strategy based on road surface estimation is designed, the strategy selects different control periods according to the estimated road surface performance, and then variable period control is achieved in combination with PID. According to the invention, road surface fluctuation monitoring and a PID control scheme of an active suspension system are fused, the control period can be adaptively adjusted by estimating the road condition, the control frequency on a better road surface is reduced, and the loss of a control actuator is greatly reduced on the premise of ensuring the stability of the suspension; and the control frequency can be rapidly increased when the road surface is poor, so that the control effect rapidly approaches to fixed-period control.
本发明涉及车辆悬架系统领域,公开了一种基于路面估计的变周期车辆主动悬架系统控制方法,在本发明中采用FNT网络对道路进行分级,通过GP算法对FNT进行结构优化,通过PSO算法对FNT进行参数优化,适用于任何给定悬架控制策略的道路分类;在本发明设计了一个通用的基于路面估计的控制周期调整策略,该策略根据预估的路面性能选择不同控制周期,进而结合PID实现变周期控制。本发明融合了路面起伏监测与主动悬挂系统的PID控制方案,能通过预估路况自适应调整控制周期,在较好的路面上减少控制频率,在保证悬架稳定的前提下大大降低了控制执行器的损耗;在路面较差时能快速增加控制频率,使控制效果迅速逼近定周期控制。
Variable period vehicle active suspension system control method based on road surface estimation
一种基于路面估计的变周期车辆主动悬架系统控制方法
2023-07-11
Patent
Electronic Resource
Chinese
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |
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