Travel Control Apparatus Power Source Failure Mode
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Solution Overview
Problem
Conventional travel control systems for autonomous vehicles do not adequately address power source malfunctions, which can disrupt continuous autonomous driving, especially when multiple power sources are involved.
Innovation Solution
A travel control apparatus with a state detection unit and a mode setting unit that identifies malfunctioning power sources and sets a fail operation mode to ensure continued autonomous driving by optimizing the use of remaining power sources, such as electricity storage devices and power generators, to maintain safe vehicle operation and guide the vehicle to a safe location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the system continues autonomous driving with malfunctioning power sources, then the travel distance can be extended, but the reliability of power supply deteriorates
Solution Approach 1:
The control unit dynamically changes operational parameters by detecting the state of each power source and selecting appropriate fail operation modes. When a power source malfunctions, the system adjusts the output parameters of remaining power sources and modifies travel control parameters to match the reduced capacity, enabling extended travel while maintaining acceptable reliability through adaptive parameter optimization
Solution Approach 2:
The system implements dynamic adaptation by continuously monitoring power source states and automatically switching between different fail operation modes. The control unit dynamically adjusts power distribution, travel speed, and route planning based on real-time power source availability, transforming a static system into a dynamic one that can extend travel distance while managing reliability risks through continuous optimization
2Reliability
If the system detects and responds to power source malfunctions, then the reliability of autonomous driving is improved, but the complexity of the control system increases
Solution Approach 1:
The control unit serves multiple functions: it normally manages power distribution among all power sources, detects malfunction states, determines appropriate fail operation modes, and adjusts travel control parameters. By making the control unit universal and multi-functional, the system improves reliability through comprehensive monitoring and response while avoiding the addition of separate dedicated components that would increase complexity
Solution Approach 2:
The system implements self-diagnosis and self-adjustment capabilities where the control unit automatically detects power source malfunctions, determines the appropriate fail operation mode, and adjusts operational parameters without external intervention. This self-service approach improves reliability through continuous monitoring while minimizing complexity by eliminating the need for separate detection and response systems
3Duration of action of moving object
If the system optimizes power source usage during failures, then the travel distance is extended, but the power consumption management becomes more complex
Solution Approach 1:
The control unit extends travel distance by dynamically changing power consumption parameters. It detects the operational state of each power source and adjusts output power, voltage, and current parameters of remaining functional power sources. The system also modifies travel-related parameters such as speed and acceleration to match the reduced power capacity, achieving extended travel through coordinated parameter optimization without requiring complex separate management systems
Data Source
AI summary
A travel control apparatus includes a processor programmed to detect a state of each of a plurality of power sources constituting a power source system, the power source system supplying power to the autonomous driving system, and set a fail operation mode corresponding to whether the detected state of each of the plurality of power source is a state configured to supply an amount of power necessary for a safety of autonomous driving.