Haptic Steering Angle Control Without Torque Request Arbitration
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Solution Overview
Problem
Existing steering control systems often generate conflicting motor torque requests due to arbitration between multiple controller components, leading to unrealistic feedback and extended response times, especially when integrating driver assistance systems.
Innovation Solution
A steering control system that generates a single motor torque request based on a single controller component, operating in a closed system where one controller component's output is used by the other, avoiding arbitration and prioritization conflicts, and utilizing a driver assistance system's angle request along with pinion angle or torque measurements to create blended feedback data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If multiple controller components operate in parallel to generate motor torque requests, then system functionality and automation are improved, but conflicts and arbitration between requests occur leading to unrealistic feedback and extended response times
Solution Approach 1:
The patent segments the control system into sequential time intervals where each controller component operates in a dedicated slot. The first controller generates a preliminary motor torque request, then the second controller generates a final motor torque request based on the first controller's output. This temporal segmentation eliminates simultaneous operations and resolves conflicts between multiple controllers.
Solution Approach 2:
The first controller component performs preliminary actions by generating an initial motor torque request that serves as input to the second controller. This preliminary output is then used by the second controller to generate the final motor torque request, ensuring that the second controller's actions are based on and consistent with the first controller's preliminary decisions.
2Adaptability or versatility
If multiple controller components operate in parallel to generate motor torque requests, then system functionality is improved, but arbitration between requests is required leading to extended response times
Solution Approach 1:
The control system is segmented into sequential time slots where the first controller operates in a first time interval and the second controller operates in a second time interval. This temporal segmentation eliminates the need for arbitration between simultaneous requests and ensures that each controller has dedicated processing time, thereby reducing overall response time while maintaining system functionality.
Solution Approach 2:
The first controller performs preliminary processing and generates an initial motor torque request that is then used as input for the second controller's final request. This preliminary action approach allows the system to process control requests sequentially rather than simultaneously, eliminating arbitration delays and reducing response time while preserving adaptability.
3Productivity
If controller components operate in parallel, then productivity is improved, but conflicting motor torque request signals are generated requiring arbitration
Solution Approach 1:
The patent applies temporal segmentation by dividing the control operation into distinct time intervals. The first controller operates during a first time interval to generate a preliminary motor torque request, and the second controller operates during a second time interval to generate the final request. This segmentation maintains productivity by ensuring continuous operation while eliminating the complexity of arbitration between conflicting signals.
Solution Approach 2:
The first controller performs preliminary processing and generates an initial motor torque request that serves as input to the second controller. This preliminary action approach maintains system productivity by ensuring continuous processing while simplifying the control architecture by eliminating the need for complex arbitration logic between multiple controllers.
Data Source
AI summary
In one or more embodiments described herein, devices, systems, methods and/or apparatuses are described that can facilitate provision of a single motor torque request based on a driver assistance system pinion angle request. The motor torque request can be generated absent arbitration between two or more requests from two or more different controller components. A device can comprise a steering control system that generates a motor torque request based on a single request from a single first controller component.