Steering System Angle-Torque Feedback for Small-Range Precision
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Solution Overview
Problem
Existing steering systems lack effective driver feedback mechanisms, particularly when the control element's angle range is small, leading to inefficiencies in vehicle steering control.
Innovation Solution
A steering system that provides driver feedback through a control element capable of detecting rotation angles and torques, distinguishing between two angle ranges to determine steering angles based on rotation or torque, using different ratios for each range to ensure smooth transitions and precise steering control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single ratio is used for the entire angle range, then the steering system is simpler to control, but driver feedback is ineffective in small angle ranges
Solution Approach 1:
The angle range is divided into multiple segments (first angle range and second angle range) with different threshold values. Each segment has its own ratio for determining desired steering angle, allowing optimized feedback for small angles while maintaining manageable complexity through systematic segmentation
2Measurement precision
If the control element detects a small angle range, then the steering system is more precise for small adjustments, but the range of steering control is limited
Solution Approach 1:
The system dynamically adjusts the ratio used for calculating desired steering angle based on the current angle range. When in the first angle range (small angles), a first ratio is applied for high precision. When in the second angle range (larger angles), a second ratio is applied to extend the effective steering range, achieving both precision and adaptability
3Manufacturing precision
If different ratios are used for different angle ranges, then steering precision is optimized, but the transition between ranges may cause discontinuities
Solution Approach 1:
The system changes the ratio parameter based on the detected angle range. By monitoring whether the control element's angle is within the first or second angle range, the system switches between different ratios to calculate desired steering angle, optimizing precision while maintaining stability through parameter adaptation
Data Source
AI summary
A steering system includes a control element for detecting an angle of rotation and a torque, and a steering actuator for moving steered wheels of the vehicle as a function of a desired steering angle. It is determined whether the angle of rotation lies in a first angle range or a second angle range that is different from the first angle range. The desired steering angle in the first angle range of the angle of rotation is determined as a function of the angle of rotation. The desired steering angle steering angle in the second angle range of the angle of rotation is determined as a function of the torque. The first angle range comprises the angle of rotation which is associated with the desired steering angle for the vehicle travelling in a straight line.