The invention relates to a wheel cylinder pressure adjusting method and system for a brake-by-wire system, and the method comprises the following steps: estimating the disturbance and uncertain parameters of the brake-by-wire system based on a pre-established kinetic model of the pressure change of a main cylinder of a motor servo type hydraulic brake-by-wire system; master cylinder pressure control parameters are obtained based on the estimation result; designing a wheel cylinder pressure increasing and reducing logic threshold control method, and determining a wheel cylinder allowable pressure error upper limit; on the basis of determining the upper limit of the allowable pressure error of the wheel cylinder, based on a self-adaptive neural network switch electromagnetic valve control method, control parameters of a wheel cylinder pressure adjusting switch electromagnetic valve are obtained through calculation; and based on the obtained main cylinder pressure control parameters and the obtained switch electromagnetic valve control parameters, the main cylinder pressure and the switch electromagnetic valve of the brake-by-wire system are controlled, and wheel cylinder pressure adjustment of the brake-by-wire system is achieved. The method can be widely applied to the field of brake-by-wire systems.
本发明涉及一种线控制动系统的轮缸压力调节方法和系统,包括以下步骤:基于预先建立的电机伺服式液压线控制动系统的主缸压力变化的动力学模型,对线控制动系统的扰动和不确定参数进行估计,基于估计结果得到主缸压力控制参数;对轮缸增减压逻辑门限控制方法进行设计,并确定轮缸容许压力误差上限;以确定轮缸容许压力误差上限为基础,基于自适应神经网络开关电磁阀控制方法,计算得到轮缸压力调节开关电磁阀的控制参数;基于得到的主缸压力控制参数以及开关电磁阀控制参数,对线控制动系统的主缸压力和开关电磁阀进行控制,实现线控制动系统的轮缸压力调节。本发明可以广泛应用于线控制动系统领域。
Wheel cylinder pressure adjusting method and system of brake-by-wire system
一种线控制动系统的轮缸压力调节方法和系统
2023-09-15
Patent
Elektronische Ressource
Chinesisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
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