The invention belongs to the technical field of vehicle mass online estimation, and particularly relates to a vehicle mass online estimation method based on fuzzy logic and a weighted least square method. Comprising the steps that 1, a longitudinal acceleration sensor measurement value signal, a longitudinal speed signal, an engine output torque signal, a gear signal, an accelerator opening degree signal, a brake pedal signal and a steering wheel angle signal are obtained from a vehicle CAN bus; 2, correcting a measurement value of the longitudinal acceleration sensor; 3, calculating an equivalent driving force and an equivalent acceleration; 4, calculating the working condition suitability by using a fuzzy logic algorithm; 5, estimating the mass of the vehicle by using a weighted least square method; 6, pausing and starting vehicle mass estimation, the structure is reasonable, and the accuracy and working condition adaptability of vehicle mass online estimation can be improved in the using process.
本发明属于车辆质量在线估计技术领域,具体为基于模糊逻辑和加权最小二乘法的车辆质量在线估计方法,包括步骤1:从车辆CAN总线上获取纵向加速度传感器测量值信号、纵向速度信号、发动机输出转矩信号、档位信号、油门开度信号、制动踏板信号、方向盘转角信号;步骤2:修正纵向加速度传感器的测量值;步骤3:计算等效驱动力和等效加速度;步骤4:利用模糊逻辑算法计算工况合适度;步骤5:运用加权最小二乘法估计车辆质量;步骤6:车辆质量估计的暂停与启动,其结构合理,能够实现在使用的过程中,提高车辆质量在线估计的准确性和工况适应性。
Vehicle quality online estimation method based on fuzzy logic and weighted least square method
基于模糊逻辑和加权最小二乘法的车辆质量在线估计方法
2023-03-07
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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