Distributed driving electric vehicle braking force control method based on road surface recognition
Distributed driving electric vehicle braking force control method based on road surface recognition
- New search for: CHEN QIPING
- New search for: LYU ZONGYU
- New search for: SHU QIANG
- New search for: JIANG ZHIQIANG
- New search for: FU WANGLIANG
- New search for: LIANG CHENGCHENG
- New search for: AI TIANFU
- New search for: ZHU ZUWEI
- New search for: WANG BOWEN
- New search for: CHEN QIPING
- New search for: LYU ZONGYU
- New search for: SHU QIANG
- New search for: JIANG ZHIQIANG
- New search for: FU WANGLIANG
- New search for: LIANG CHENGCHENG
- New search for: AI TIANFU
- New search for: ZHU ZUWEI
- New search for: WANG BOWEN
A distributed driving electric vehicle braking force control method based on road surface recognition comprises the steps that vehicle state information is obtained through a sensor, and the slip rate and the utilization adhesion coefficient are estimated through an automobile kinetic equation and a moment balance equation; designing a road surface recognition algorithm based on a correction factor based on the estimated slip rate and the utilization adhesion coefficient in combination with a Burckhardt tire model, and recognizing the type of the current driving road surface to obtain an optimal slip rate corresponding to the type of the current driving road surface; according to the optimal slip rate corresponding to the type of the current driving road surface, an objective function with constraint conditions is established, and an optimal braking force distribution coefficient under different braking strengths of the current road surface is calculated by adopting an optimization tool Fmincon function under nonlinear constraints; and calculating according to the total braking force and the optimal braking force distribution coefficient to obtain the front axle braking force and the rear axle braking force. The brake safety of the vehicle can be guaranteed, and the brake efficiency is improved.
一种基于路面识别的分布式驱动电动汽车制动力控制方法，包括：通过传感器获取车辆状态信息，利用汽车动力学方程和力矩平衡方程进行滑移率和利用附着系数估算；基于估算得到的滑移率和利用附着系数，并结合Burckhardt轮胎模型，设计基于修正因子的路面识别算法，对当前行驶路面的类型进行识别，得到当前行驶路面的类型对应的最优滑移率；根据当前行驶路面的类型对应的最优滑移率，建立带有约束条件的目标函数，采用非线性约束下的最优化工具Fmincon函数计算得到当前路面下不同制动强度下最优的制动力分配系数，再根据总制动力以及最优的制动力分配系数计算得到前轴制动力和后轴制动力。本发明能够保证车辆制动安全，提高制动效率。
Document information
Distributed driving electric vehicle braking force control method based on road surface recognition
一种基于路面识别的分布式驱动电动汽车制动力控制方法
2023-10-31
Patent
Electronic Resource
Chinese
| IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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