The invention discloses a starting control method during simultaneous work of AVH and idling starting and stopping, which is applied to the technical field of electronic stability control and comprises the following steps: acquiring a slope value of a current vehicle, calculating a required torque of an engine, and constructing an MPC torque output prediction model based on torque change constraint; the brake pressure of the current vehicle is collected, and a self-adaptive brake pressure control and torque output fitting curve is constructed in combination with the engine demand torque; and a program judgment filtering method is adopted to carry out jitter elimination processing on a torque output result of the MPC torque output prediction model, and the magnitude of the brake pressure is adjusted according to the torque output result after jitter elimination processing based on the adaptive brake pressure control and torque output fitting curve. According to the method, more accurate, efficient and safer starting control can be realized according to the current torque during real-time operation, the influence of engine vibration caused by sudden change of the torque during starting of the engine on a braking system is avoided, and the safety of starting control is further improved.
本发明公开了一种AVH和怠速启停同工作时的起步控制方法,应用于电子稳定控制技术领域,包括:采集当前车辆所处坡度值,计算发动机需求扭矩,并基于扭矩变化约束,构建MPC扭矩输出预测模型;采集当前车辆的制动压力,并结合发动机需求扭矩,构建自适应制动压力控制与扭矩输出拟合曲线;采用程序判断滤波法对MPC扭矩输出预测模型的扭矩输出结果进行消抖处理,并基于自适应制动压力控制与扭矩输出拟合曲线,根据消抖处理后的扭矩输出结果,调整制动压力的大小。本发明能够在实时运行中根据当前扭矩实现更精确、高效和安全的起步控制,且避免了发动机启动时扭矩突变导致发动机振动对制动系统造成的影响,进一步提高了起步控制的安全性。
Starting control method and system during simultaneous working of AVH and idling starting and stopping
一种AVH和怠速启停同工作时的起步控制方法及系统
22.12.2023
Patent
Elektronische Ressource
Chinesisch
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