Steering Control Apparatus Yaw Rate Feedback
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Solution Overview
Problem
Conventional steering control apparatuses fail to provide suitable steering control signals during excessive or insufficient steering angles, leading to abnormal turning states such as over-steering or under-steering, which can endanger vehicles and drivers, especially on slippery roads.
Innovation Solution
A steering control apparatus that determines the turning state by comparing calculated and measured yaw rate values, using a torque sensor and yaw rate sensor, and adjusts control signals to align tires and return the vehicle to a normal turning state through a controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional steering control is used, then basic steering assistance is provided, but abnormal turning states (over-steering or under-steering) occur during vehicle turns
Solution Approach 1:
The system calculates a theoretical yaw rate based on steering angle and vehicle speed, then compares it with the actual yaw rate from sensors. This feedback mechanism detects deviations indicating abnormal turning states and triggers appropriate control responses to correct over-steering or under-steering conditions.
Solution Approach 2:
The system proactively detects potential abnormal turning states by comparing theoretical and actual yaw rates before the condition becomes critical. By identifying deviations early, the system can apply corrective steering control to prevent the development of dangerous over-steering or under-steering situations.
2Stability of the object's composition
If steering control is increased to prevent abnormal states, then turning stability improves, but steering responsiveness and driver intent may be compromised
Solution Approach 1:
The system dynamically adjusts steering control based on real-time comparison of theoretical and actual yaw rates. Control intervention is applied only when deviations indicate abnormal turning states, while normal steering operations maintain full responsiveness. This dynamic approach balances stability enhancement with preservation of steering speed and driver intent.
Data Source
AI summary
Disclosed are steering control apparatus and a steering control method which are capable of determining a turning state of a vehicle, and controlling a steering control signal so that the vehicle maintains a normal turning state, thereby improving safety of the vehicle.