Autonomous Parking Path Teaching With Steering Resistance Feedback
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Solution Overview
Problem
Existing vehicle control systems face difficulties in providing effective parking assistance due to challenges in following a taught path obtained from manual steering wheel operations during automated driving, especially in narrow spaces.
Innovation Solution
A vehicle control method and device that integrates sensors, a display, and a movement control system to register a taught path during teaching traveling, apply resistance to steering wheel operations, and adjust steering angles to facilitate autonomous parking, using indicators to guide the driver and ensure accurate path following.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the vehicle performs autonomous traveling along a taught path obtained by manual steering wheel operation at a predetermined rotation angle or greater, then the vehicle can achieve automated parking functionality, but it becomes difficult to perform following traveling along the taught path during autonomous traveling
Solution Approach 1:
The system performs preliminary teaching traveling where the driver manually operates the steering wheel to record the taught path, including steering angle, vehicle speed, and acceleration/deceleration information. This preliminary action captures the optimal path data that will be reused during autonomous parking, allowing the system to achieve automated functionality while maintaining path following accuracy.
Solution Approach 2:
The system provides feedback to the driver through display devices showing the taught path, current vehicle position relative to the path, and guidance information. This feedback mechanism allows the driver to understand the autonomous system's actions and intervene if necessary, thereby maintaining reliability while enabling automation.
2Ease of operation
If the vehicle applies resistance force to steering wheel rotation operation during teaching traveling at low speed, then the driver's steering operations are suppressed, but it may affect the natural teaching process
Solution Approach 1:
The resistance force applied to the steering wheel is dynamically adjusted based on vehicle speed. At low speeds during teaching traveling, the resistance is increased to suppress excessive steering operations and guide the driver toward smoother maneuvers. At higher speeds, the resistance is reduced or removed to allow natural steering input. This dynamic adjustment maintains teaching process naturalness while providing operational control when needed.
Solution Approach 2:
The system changes the physical parameter of steering wheel resistance based on operating conditions. By varying the resistance force according to vehicle speed and teaching progress, the system optimizes both ease of operation and naturalness of the teaching process, preventing overly aggressive steering inputs at low speeds while maintaining driver control at higher speeds.
Data Source
AI summary
A vehicle control method is executed by a control device of a vehicle. According to the method, a taught path is registered based on an outside situation of the vehicle during teaching traveling in which the vehicle travels from a predetermined position to a target parking position. The vehicle is caused to perform autonomous traveling from the predetermined position to the target parking position. When a speed of the vehicle becomes a first speed or lower during the teaching traveling, a resistance force is applied to a steering wheel rotation operation, and a display device of the vehicle is caused to display a first indicator showing a request for suppression of the steering wheel rotation operation. When the speed of the vehicle becomes a second speed or lower during the autonomous traveling, the vehicle is caused to perform steering at a predetermined angle or greater.