An emergency steering control system and control method

Abstract

The invention discloses an emergency steering control method and a control system. The control method is carried out according to the following steps: first, obtain the working state signal of at least one of the vehicle steering main pump and the engine; secondly, according to the above working state signal, combined with the current The vehicle’s gear signal and parking signal are used to judge whether to start the emergency steering control unit of the vehicle, and the emergency steering control unit provides steering power to the steering gear of the vehicle; in this control method, according to the working status signal of the main pump or engine, the Whether the main pump or the engine is faulty, if one of them is faulty, the operating conditions of the vehicle will be further combined with the gear signal and parking signal of the vehicle to judge whether to start the emergency steering control unit of the vehicle, and the emergency steering control unit will send the vehicle a The steering gear provides steering power. The emergency steering control method provided by the invention can automatically start the emergency steering system of the vehicle, realize the emergency steering of the vehicle, and improve the driving safety of the vehicle.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to an emergency steering control system and a control method. Background technique [0002] Heavy-duty vehicles generally have heavy axle loads. In order to make the steering light, a power assist unit is usually configured on the basis of the mechanical steering system, or for a full hydraulic steering system, the steering power is completely provided by the hydraulic assist unit. If the assist unit fails, the steering will change. It was so heavy that it couldn't even turn. [0003] The steering system of a vehicle generally includes a steering wheel 5', a steering gear 6', a steering cylinder 7', and a main pump 2'. The steering power of the vehicle comes from the main pump, which takes power from the engine. The pump works, and the main pump provides steering assistance to the steering system. Therefore, in addition to the conventional power assist unit, the mandatory s...

AI Technical Summary

Problems solved by technology

This mainly depends on the driving experience of the operator, and there is a relatively large safety hazard for inexperienced operators

[0010] In addition, considering the limitations of the overall layout of the vehicle, the power of the electric pump in the second emergency power steering method comes from the battery of the vehicle, and the capacity of the battery used for the vehicle is limited, and the power that the electric pump can provide is relatively small. It is only used in the emergency steering system with small displacement, but for the large displacement steering gear, due to the large oil flow required, it is impossible to realize emergency steering through the electric pump, and the use has limitations

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