Vehicle Turning Control Using Substitute Steering Load Prediction
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Solution Overview
Problem
Existing vehicle controllers face challenges in managing load on substitute devices when anomalies occur in steering devices, leading to potential overload and reduced performance during automatic turning.
Innovation Solution
The controller detects anomalies in steering devices and calculates predicted loads on substitute devices like the braking and driving systems, activating them only within allowable limits to maintain efficient automatic turning control, thereby preventing excessive load and ensuring continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the substitute device is activated to continue automatic steering when the steering device has an anomaly, then the automatic steering function is maintained, but the load on the substitute device increases due to extended activation time
Solution Approach 1:
The controller performs a determination process before activating the substitute device to check whether the load on the substitute device will be within an allowable range. This preliminary assessment prevents excessive load accumulation by evaluating the substitution duration and load characteristics in advance, thereby resolving the contradiction between maintaining steering continuity and controlling substitute device load.
2Duration of action of stationary object
If the substitute device is activated for extended periods to maintain automatic steering, then steering functionality is preserved, but the substitute device may experience excessive load and potential failure
Solution Approach 1:
The controller continuously monitors the load on the substitute device during activation and compares it against predetermined allowable ranges. This feedback mechanism enables real-time adjustment of the substitution strategy, ensuring the substitute device operates within safe load limits throughout the extended activation period, thus preserving both duration and reliability.
3Productivity
If the controller activates the substitute device without load assessment, then automatic turning control continues, but the substitute device may be overloaded causing performance degradation
Solution Approach 1:
The controller performs a determination process before activating the substitute device to check whether the load on the substitute device will be within an allowable range. This preliminary assessment prevents excessive load accumulation by evaluating the substitution duration and load characteristics in advance, thereby resolving the contradiction between maintaining steering continuity and controlling substitute device load.
Data Source
AI summary
A controller for a vehicle is configured to execute a process that detects an anomaly of a steering device and a process that performs an automatic turning control that causes the vehicle to turn automatically along a traveling route. The controller is configured to perform the automatic turning control by controlling the steering device when an anomaly of the steering device is not detected. The controller is configured to, when an anomaly of the steering device is detected, calculate, as a predicted value, a load on the substitute device on an assumption that the automatic turning control is performed by activating the substitute device, and perform the automatic turning control by controlling the substitute device when an allowable range that is a set of values of a load allowable to the substitute device includes the predicted value.