The invention discloses a multi-stage failure backup intelligent steering system which comprises a mechanical steering system. The hydraulic power-assisted steering system comprises an oil can, a high-pressure oil pump and a pressure sensor, and the pressure sensor is used for monitoring the working state of the hydraulic system in real time and exchanging data with the redundancy controller; the electric control power-assisted steering system comprises a redundant sensor, a redundant controller and a double-winding motor, the double-winding motor comprises a first EPS motor winding and a second EPS motor winding, and each winding can work independently; the redundant controller comprises a first MCU (Microprogrammed Control Unit) and a second MCU; according to the system, a multi-stage failure backup mechanism is introduced and comprises three backup modes of electric control power assistance, hydraulic power assistance and mechanical steering, and a power supply backup technology, a system wake-up backup technology, an execution control backup technology and a failure and diagnosis strategy technology, so that the safety, reliability and fault-tolerant capability of the system are remarkably improved; and an effective steering function can be kept under various fault conditions.
本发明公开了一种多级失效备份智能转向系统,包括:机械转向系统;液压助力转向系统,包括油壶、高压油泵及压力传感器,所述压力传感器用于实时监测液压系统的工作状态并与冗余控制器进行数据交换;以及电控助力转向系统,包括冗余传感器、冗余控制器以及双绕组电机,所述双绕组电机包括第一EPS电机绕组和第二EPS电机绕组,每个绕组都可独立工作;所述冗余控制器包括第一MCU以及第二MCU;该系统通过引入多级失效备份机制,包括电控助力、液压助力和机械转向三种备份方式,以及电源供电备份技术、系统唤醒备份技术、执行控制备份技术和失效及诊断策略技术,显著提高了系统的安全性、可靠性和容错能力,确保在各种故障情况下都能保持有效的转向功能。
Multi-stage failure backup intelligent steering system
一种多级失效备份智能转向系统
2025-03-11
Patent
Electronic Resource
Chinese
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