电磁与摩擦集成制动系统防抱死制动分层协调控制

为了深入研究电磁与摩擦集成制动系统防抱死控制机理,提高其在紧急制动下的防抱死控制性能,在建立电磁与摩擦集成防抱死制动模型的基础上,根据电磁制动与电子液压制动各自制动控制特性,提出了电磁与摩擦集成制动系统防抱死制动分层协调控制方法。在硬件在环仿真平台上验证了数学模型的有效性,并在模拟干燥沥青路面、冰雪路面以及对接路面环境下,对比研究了电磁与摩擦集成制动系统、高性能电子液压制动系统和低性能电子液压制动系统的防抱死制动性能。结果表明:在防抱死控制过程中使用电磁制动取代低性能电子液压制动系统控制车轮最佳滑移率,仅使用低性能电子液压制动提供一定的制动强度,完全可以实现与高性能电子液压制动系统相同甚至更优的防抱死控制效果。

Layered Coordinated Control of Anti-lock Brake for Electromagnetic and Frictional Integrated Brake System

In order to study the anti-lock braking control mechanism of the electromagnetic and frictional integrated brake system and improve the anti-lock braking control performance, the anti-lock braking model was established. And the layered coordinated anti lock control method was put forward according to the braking control features of electromagnetic brake and electronic hydraulic brake. The hardware in the loop simulation platform of electromagnetic and frictional integrated brake system was used to verify the validity of this mathematical model. The comparative study which simulated the dry asphalt, ice and snow and docking pavement was carried out on the anti-lock braking performance of electromagnetic and frictional integrated brake system, high-performance and low-performance electronic hydraulic brake system. Conclusions are obtained as follows: using the electromagnetic brake to control the optimal slip ratio in the process of anti lock control could fully realize the same anti-lock control effect of high-performance electronic hydraulic brake system with a certain amout of braking intensity provided by low-performance electronic hydraulic brake system. In the design process of the electromagnetic and frictional integrated brake system, the reasonable match of braking performance of electromagnetic brake and electronic hydraulic brake minimizing reliance on the hydraulic control elements of the electronic hydraulic brake would reduce the manufacturing difficulty and cost of the electromagnetic and frictional integrated brake system.