Steering Actuator Neutral Positioning After Parking
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Solution Overview
Problem
Existing vehicle steering systems do not automatically adjust the steering angle to a neutral position after parking, which can lead to unexpected changes for drivers, especially untrained or unsure ones, when starting the vehicle again.
Innovation Solution
A method for automatically adjusting the steering angle to a neutral position using a steering actuator, which can be activated manually or automatically upon completion of the parking process, utilizing an automated parking brake or ignition status to generate a signal for activating the steering actuator, ensuring the wheels are oriented parallel to the vehicle's longitudinal axis before driving away.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the steering angle is automatically adjusted after parking, then driver safety is improved by preventing unexpected steering changes, but the device complexity increases due to additional control systems
Solution Approach 1:
The steering actuator automatically adjusts the steering angle to a neutral or safe position before the driver starts the vehicle or before parking is completed. This preliminary action ensures that the steering wheel is in a predictable position, preventing unexpected movements when the driver takes control, thus improving safety without requiring complex real-time intervention systems.
Solution Approach 2:
The control unit receives feedback signals from the parking brake system (indicating when parking is complete) and from the steering angle sensor (indicating current wheel position). Based on this feedback, the control unit automatically commands the steering actuator to adjust the steering angle appropriately, creating a closed-loop system that improves reliability through automated monitoring and adjustment.
2Ease of operation
If manual triggering is required for steering actuator activation, then ease of operation is improved by giving driver control, but productivity decreases due to additional driver intervention steps
Solution Approach 1:
The system provides dynamic operation modes that adapt to driver needs: it can operate in automatic mode (triggered by parking brake completion or ignition status) for high efficiency, or in manual mode (triggered by driver input) for maximum control. This dynamic flexibility allows the system to optimize between ease of operation and productivity based on the specific situation and driver preference.
3Extent of automation
If automated parking brake signal triggers steering actuator, then extent of automation is improved by eliminating driver intervention, but device complexity increases due to integration requirements
Solution Approach 1:
The control unit serves multiple functions: it monitors the parking brake status, reads the steering angle sensor, controls the steering actuator, and manages ignition status signals. By making the control unit universal and multi-functional, the system achieves a high extent of automation without proportionally increasing complexity, as the same control hardware handles multiple tasks that would otherwise require separate dedicated systems.
Data Source
AI summary
A method is used to automatically adjust a steering angle in a steering system of a vehicle. The method includes activating a steering actuator after parking the vehicle such that the steering wheel and the steerable wheels adopt a neutral position.