Traffic Jam Pilot Activation Around Rear-Wheel Steering Conflicts
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Solution Overview
Problem
There is no driving control method in prior art that allows a vehicle to safely incorporate both the traffic jam pilot function and the rear wheel steering function simultaneously, as they are controlled by different electronic control units and can conflict with each other.
Innovation Solution
A driving control method that monitors and adjusts the state of the rear wheel steering function to ensure it is inactivated before activating the traffic jam pilot function, and vice versa, using active safety and vehicle dynamics domain masters to manage the transition and prevent conflicts between the two systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the traffic jam pilot function and rear wheel steering function are controlled by different ECUs independently, then each function can operate autonomously, but conflicts arise when both functions are activated simultaneously
Solution Approach 1:
The patent merges the control of traffic jam pilot function and rear wheel steering function into a single ECU. This integration allows the system to manage both functions centrally, preventing conflicts through unified state monitoring and coordination logic, while maintaining the autonomous operational capabilities of each function.
Solution Approach 2:
The patent introduces a state acquisition and coordination mechanism that acts as an intermediary between the two functions. This mechanism monitors the state of the rear wheel steering function and mediates the activation/deactivation of the traffic jam pilot function accordingly, preventing simultaneous conflicting operations.
2Adaptability or versatility
If the traffic jam pilot function is activated while rear wheel steering is active, then automation coverage is improved, but safety and stability deteriorate due to control conflicts
Solution Approach 1:
The patent implements preliminary action by checking the state of the rear wheel steering function before allowing activation of the traffic jam pilot function. The system proactively prevents conflicting states by ensuring the rear wheel steering is inactivated before the traffic jam pilot function can be activated, thereby maintaining safety while preserving automation coverage.
Solution Approach 2:
The patent employs feedback mechanisms where the state of the rear wheel steering function continuously informs the activation status of the traffic jam pilot function. This feedback loop ensures that the system maintains safe operational states by preventing activation of the traffic jam pilot function when rear wheel steering is active, thus preserving both safety and automation versatility.
3Reliability
If priority is given to traffic jam pilot function over rear wheel steering function, then system safety is improved, but responsiveness of rear wheel steering function may be reduced
Solution Approach 1:
The patent implements dynamic state management where the priority relationship between functions is not fixed but adapts based on operational context. The system dynamically switches between functions based on their respective states and requirements, ensuring that when rear wheel steering is active, traffic jam pilot cannot be activated, and vice versa. This dynamic approach maintains safety while preserving the responsiveness of both functions in their respective operational contexts.
Data Source
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AI summary
A driving control method for a vehicle, comprising: acquiring a state of a rear wheel steering function of a vehicle; and adjusting the state of the rear wheel steering function to control a traffic jam pilot function of the vehicle to enter an activated state, wherein if the rear wheel steering function is in an activated state, before the rear wheel steering function is switched to an inactivated state, the traffic jam pilot function does not enter an activated state, and if the rear wheel steering function is in an inactivated state, after both a longitudinal control state and a lateral control state of the vehicle enter a traffic jam pilot mode, the traffic traffic jam pilot function enters an activated state.