The invention relates to the field of new energy automobiles, and provides a tire slip angle adaptive estimation method and device. The method comprises the steps that motion state parameters of a vehicle in the driving process are collected; processing the motion state parameters by using a preset first tire slip angle estimator and a preset second tire slip angle estimator respectively to obtain a first tire slip angle estimated value and a second tire slip angle estimated value; based on a preset weight distribution strategy, determining a first weight coefficient distributed to the first tire slip angle estimated value and a second weight coefficient distributed to the second tire slip angle estimated value; based on the obtained real-time road condition information and the vehicle load, the first weight coefficient and the second weight coefficient are subjected to self-adaptive adjustment, and a first adjustment weight coefficient and a second adjustment weight coefficient are obtained; and fusing the first tire slip angle estimated value and the second tire slip angle estimated value based on the first adjustment weight coefficient and the second adjustment weight coefficient to obtain a fused tire slip angle estimated value. The estimation accuracy of the tire slip angle can be effectively improved.
本申请涉及新能源汽车领域,提供了一种轮胎侧偏角自适应估算方法和装置。该方法包括:采集车辆在行驶过程中的运动状态参数;分别利用预设的第一轮胎侧偏角估算器、第二轮胎侧偏角估算器对运动状态参数进行处理,得到第一、第二轮胎侧偏角估算值;基于预设的权重分配策略,确定分配给第一轮胎侧偏角估算值的第一权重系数,以及分配给第二轮胎侧偏角估算值的第二权重系数;基于获取到的实时路况信息和车辆载荷,对第一、第二权重系数进行自适应调整,得到第一调整权重系数和第二调整权重系数;基于第一、第二调整权重系数,对第一、第二轮胎侧偏角估算值进行融合,得到融合轮胎侧偏角估算值。本申请可有效提高轮胎侧偏角的估算精确度。
Tire slip angle self-adaptive estimation method and device
一种轮胎侧偏角自适应估算方法和装置
2023-12-01
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
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