一种纯电动矿车混合制动控制系统及方法

By employing techniques such as asymmetric dynamic hysteresis interval and time delay feedforward compensation, the braking system problem of pure electric mining vehicles under heavy-load downhill conditions has been solved, achieving smooth switching between electro-hydraulic braking and improved safety, extending hardware lifespan, and enhancing driving safety and comfort.

CN122402255APending Publication Date: 2026-07-17XUZHOU XCMG MINING MACHINERY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XUZHOU XCMG MINING MACHINERY CO LTD
Filing Date
2026-06-10
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing pure electric mining vehicles suffer from problems such as frequent oscillations in the braking system, torque step jumps and gaps, fixed thresholds that cannot adapt to extreme working conditions, and poor signal anti-interference capabilities under heavy load and long downhill conditions. These issues lead to a decrease in driving safety and comfort, and accelerated hardware wear.

Method used

A hybrid braking control system employing asymmetric dynamic hysteresis interval, time delay feedforward compensation, load slope adaptation, and multidimensional signal filtering achieves seamless and smooth switching between electro-hydraulic braking through state continuation control, hydraulic time delay feedforward, working condition adaptive threshold, and multidimensional signal preprocessing. This eliminates system oscillations and braking force gaps, thereby improving safety and stability.

Benefits of technology

The braking system has been improved in six dimensions: smoothness, stability, safety, reliability, durability, and energy recovery. This has eliminated system oscillations, extended hardware lifespan, improved driving safety and comfort, and ensured control certainty and anti-interference capability under complex operating conditions.

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Abstract

本发明公开了一种纯电动矿车混合制动控制系统及方法,属于纯电动矿用车辆制动控制技术领域;针对现有单点SOC阈值切换存在的系统震荡、制动力空窗、工况适应性差等问题,本发明构建非对称动态滞回区间,基于状态延续逻辑锁定区间内制动状态;通过SOC变化率预测到达上限的剩余时间,提前启动液压预充液,同步执行电液力矩线性协同控制;结合载荷与坡度自适应修正阈值,并对核心信号进行多维滤波预处理。本发明彻底消除了电液切换的力矩空窗与系统震荡,实现无感平顺切换,显著提升重载下坡安全性与核心部件寿命,在保障电池安全的前提下最大化动能回收效率。
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