Rear Wheel Steering Control During Front Steering Lock
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Solution Overview
Problem
Existing vehicle steering systems face instability due to misalignment in steering response between front and rear wheels, particularly in cases of front wheel steering device failure or delayed response, which can compromise steering stability and maneuverability.
Innovation Solution
An apparatus and method for steering assist control that determines front wheel steering device failures, generates locking control signals to maintain the front wheel steering angle, and provides cooperative control for the rear wheel steering device to ensure consistent steering direction and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the rear wheel steering system is controlled solely in a state of failure or delayed response of the front wheel steering device, then the steering direction consistency of the entire vehicle cannot be secured, but adding auxiliary control technologies increases device complexity
Solution Approach 1:
The control apparatus acts as an intermediary between the driver's steering input and the rear wheel steering device. When front wheel steering failure or delayed response is detected, the control apparatus generates auxiliary control signals to compensate for the steering direction inconsistency, thereby maintaining overall steering consistency without requiring complex hardware modifications
Solution Approach 2:
The system continuously monitors the steering state information from both front and rear wheel steering devices. When a failure or delayed response in the front wheel steering device is detected, the feedback mechanism triggers auxiliary control technologies to adjust the rear wheel steering device, ensuring steering direction consistency is maintained through real-time closed-loop control
2Stability of the object's composition
If the front wheel steering device is locked to maintain steering angle in faulty state, then steering stability is improved, but steering responsiveness to driver input is reduced
Solution Approach 1:
The system dynamically adjusts the locking control of the front wheel steering device based on real-time steering state information. Rather than maintaining a fixed locked state, the control apparatus modulates the locking intensity and duration according to vehicle speed, steering angle, and failure severity, optimizing both stability and responsiveness under varying driving conditions
Solution Approach 2:
The control apparatus changes key parameters such as locking force magnitude, locking duration, and rear wheel steering compensation amount based on the detected failure state and vehicle operating conditions. By dynamically adjusting these parameters, the system maintains steering stability while preserving necessary responsiveness to driver inputs
Data Source
AI summary
An apparatus for steering assist control includes a memory storing at least one instruction, and at least one processor executing the at least one instruction, in which the at least one processor executes the at least one instruction to determine whether a front wheel steering device of a vehicle is faulty based on steering state information corresponding to the front wheel steering device, generate a locking control signal for the front wheel steering device to maintain a steering angle of a front wheel if the front wheel steering device is determined to be faulty, and generate cooperative control information for a rear wheel steering device in a state where the front wheel steering device is locked.