Vehicle Steering Control System Gear-Based Automation
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Solution Overview
Problem
Operating a vehicle, especially when parallel parking or leaving a parallel parking spot, requires significant operator effort due to the need to repeatedly rotate the steering mechanism to full lock positions, which can be cumbersome and stressful, potentially leading to vehicle damage or other issues.
Innovation Solution
A steering control system that uses a processor and sensors to determine the steering direction and selected gear of a vehicle, generating control values to automatically control the steering, allowing the system to fully lock the steering mechanism in response to gear changes, reducing operator effort and eliminating the need for manual steering during these maneuvers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual steering is used during parallel parking, then the operator has direct control over the vehicle, but the operator effort and stress increase significantly
Solution Approach 1:
The steering control system enables the vehicle to steer itself automatically during parallel parking operations. The processor determines steering direction and generates control values based on gear selection, allowing the vehicle to perform steering actions without continuous operator intervention, thus reducing operator effort while maintaining control capability.
2Productivity
If the steering mechanism is rotated to full lock positions repeatedly, then the vehicle can be maneuvered into parallel parking spots, but the risk of vehicle damage increases
Solution Approach 1:
The steering control system incorporates feedback mechanisms where the processor continuously monitors gear selection and steering direction, generating appropriate control values to adjust steering angle. This feedback loop enables precise control during parking maneuvers, reducing the risk of excessive steering angles that could damage the vehicle while maintaining parking efficiency.
3Ease of operation
If automated steering control is implemented, then operator effort is reduced, but the device complexity increases
Solution Approach 1:
The steering control system is designed to perform multiple functions using a single integrated processor-based controller. The same processor determines steering direction, generates control values based on gear selection, and manages steering actuation, eliminating the need for separate dedicated systems for each function and thereby reducing overall device complexity while providing automated steering control.
4Measurement precision
If the steering system responds to gear changes, then steering accuracy is improved, but the response time and system complexity increase
Solution Approach 1:
The steering control system is configured to anticipate steering requirements based on gear selection. When the operator selects a gear, the processor pre-determines the appropriate steering direction and generates control values in advance, enabling the steering system to respond immediately to gear changes without delay for calculation or decision-making, thus improving both precision and response time.
Data Source
AI summary
A steering control system comprises a processor and a memory. The memory includes instructions that, when executed by the processor, cause the processor to: determine a steering direction of a vehicle; determine a selected gear of the vehicle; generate a first steering control value based on the steering direction and the selected gear; selectively control steering of the vehicle based on the first steering control value; in response to the selected gear changing, generate a second steering control value based on the steering direction and a second selected gear; and selectively control steering of the vehicle based on the second steering control value.