Steering Angle Controller Multi-Algorithm Adaptation
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Solution Overview
Problem
Existing steering systems in autonomous and assisted driving vehicles fail to provide an optimal driving sensation, as they lack the ability to adapt to different driving behaviors and conditions, such as speed, load, and driving situations, leading to an inconsistent driving experience.
Innovation Solution
A steering angle controller with a memory unit storing multiple control algorithms that can be manually or dynamically selected based on driving state variables, allowing for the adjustment of driving behavior to achieve a sporty or comfortable experience by influencing the yaw behavior of the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single control algorithm is used in the steering angle controller, then the device complexity is reduced, but the adaptability to different driving behaviors and conditions deteriorates
Solution Approach 1:
The steering angle controller dynamically switches between multiple control algorithms based on detected driving state variables (speed, acceleration, load). The controller transitions from a static single-algorithm design to a dynamic multi-algorithm system that adapts its control strategy in real-time according to the current driving conditions, thereby improving adaptability without requiring a completely redesigned complex system.
Solution Approach 2:
The controller changes its operational parameters by selecting different control algorithms based on threshold comparisons of driving state variables. When variables such as speed or acceleration exceed certain thresholds, the controller switches to appropriate algorithms that reflect sporty or comfortable driving behaviors, enabling parameter-based adaptation to different driving scenarios.
2Adaptability or versatility
If multiple control algorithms are stored in memory for different driving conditions, then the adaptability improves, but the device complexity increases
Solution Approach 1:
The control algorithm set is segmented into multiple distinct algorithms stored in memory, each optimized for specific driving conditions (sporty, comfortable, or neutral behaviors). This segmentation allows the controller to store and manage different control strategies separately, improving adaptability while organizing the complexity into manageable, discrete algorithm modules that can be independently selected based on driving state variables.
3Ease of operation
If the control algorithm is manually selected, then the driver's control and driving sensation are improved, but the automation level deteriorates
Solution Approach 1:
The steering angle controller is designed with multi-functionality to serve both manual and automatic operation modes. It can operate in manual selection mode where the driver directly chooses the control algorithm, or in automatic mode where the controller autonomously selects algorithms based on detected driving state variables. This universal design allows the same controller to adapt to different user preferences and automation requirements.
4Speed
If the control algorithm is automatically selected based on driving state variables, then the responsiveness to driving conditions is improved, but the measurement and detection requirements deteriorate
Solution Approach 1:
The controller implements feedback mechanisms by continuously detecting driving state variables (speed, acceleration, load) and using this information to automatically select appropriate control algorithms. The feedback loop ensures rapid response to changing driving conditions, with the controller monitoring sensor inputs and adjusting algorithm selection in real-time to maintain optimal steering assistance characteristics.
Data Source
AI summary
A steering angle controller which controls an actual value to a desired value, wherein the steering angle controller outputs, as an output signal, an actuating signal for power electronics to control an electric servo motor, wherein the actual value is a steering angle or a measurement variable corresponding to the steering angle and the desired value is a steering angle request or measurement variable request, wherein the steering angle controller is assigned at least one memory which stores at least two different control algorithms.