The invention discloses a vehicle speed prediction method and device, and the method comprises the steps: S1, comparing the prediction effects of Markov vehicle speed models under different constraint conditions, and obtaining a Markov vehicle speed prediction model with the highest vehicle speed prediction precision; s2, analyzing the precision influence of the vehicle driving state online identification model on the Markov vehicle speed prediction model obtained in the S1; and S3, adjusting the Markov vehicle speed prediction model according to an analysis result of the S2, analyzing the influence of the number of clustering centers on prediction precision, obtaining a Markov vehicle speed prediction model of time clustering, and verifying the Markov vehicle speed prediction model. By comparing the prediction effects of the Markov vehicle speed prediction model under different constraint conditions, the Markov vehicle speed prediction model with the highest prediction precision under the dual constraints of the driving state and time is obtained, it is analyzed that the prediction precision is reduced due to the driving state recognition error, the Markov vehicle speed prediction model with the time classification constraint is obtained through adjustment, and the prediction precision of the Markov vehicle speed prediction model is improved. The problem that prediction precision is reduced due to driving state recognition errors is solved, and prediction accuracy is stably improved.
本发明公开一种车速预测方法及其装置,包括,S1:对不同约束条件下的马尔科夫车速模型的预测效果进行对比,得出车速预测精度最高的马尔科夫车速预测模型;S2:分析汽车行驶状态在线识别模型对S1得出的马尔科夫车速预测模型的精度影响;S3:根据S2的分析结果对马尔科夫车速预测模型进行调整,分析聚类中心个数对预测精度影响,得出时间聚类的马尔科夫车速预测模型并验证。通过对比在不同约束条件下的Markov车速预测模型的预测效果,获得预测精度最高的行驶状态与时间双重约束下Markov车速预测模型,分析出行驶状态识别误差会导致预测精度降低,调整得出时间分类约束的Markov车速预测模型,解决行驶状态识别误差导致预测精度降低问题,稳定提高预测准确性。
Vehicle speed prediction method and device
一种车速预测方法及其装置
2024-03-26
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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