Autonomous Vehicle External Force Classification for Travel Control
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Solution Overview
Problem
In autonomous vehicle production methods, when a vehicle rides on an external object, detecting and responding to external forces is challenging, as it can disrupt ongoing work and require appropriate control measures to prevent accidents or continue operations safely.
Innovation Solution
A control device and method that include an external force information acquisition unit, an external force determination unit, and a traveling control signal generation unit to differentiate between types of external forces acting on the vehicle, allowing for appropriate control signals to be generated and transmitted for remote or autonomous operation, such as stopping or retreating when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle is caused to stop or retreat when external force is detected, then safety is improved, but work continuity deteriorates
Solution Approach 1:
The external force detection system segments the detection of external forces into different types (abnormal vs. normal forces) based on characteristics such as magnitude, direction, and duration. This allows the control system to apply different responses: stopping/retreating for abnormal forces while maintaining work continuity for normal forces during assembly operations
Solution Approach 2:
The system changes the parameters of the control response based on the characteristics of the detected external force. By analyzing force magnitude, direction, and temporal patterns, the system adjusts whether to stop, retreat, or continue operation, thereby maintaining safety while preserving work continuity when appropriate
2Productivity
If the vehicle operates autonomously without external force detection, then productivity is improved, but safety deteriorates
Solution Approach 1:
The system implements feedback by continuously monitoring external forces acting on the vehicle during autonomous operation and using this information to adjust control signals. The external force detection unit provides real-time feedback to the control unit, enabling the vehicle to respond appropriately to abnormal forces while maintaining autonomous productivity
3Speed
If simple stop or retreat control is applied, then response speed is improved, but adaptability deteriorates
Solution Approach 1:
The control system transitions from static simple stop/retreat commands to dynamic adaptive control that adjusts responses based on real-time analysis of external force characteristics. The system dynamically determines the appropriate control action (stop, retreat, or continue) based on the specific nature of the detected force, thereby maintaining fast response while achieving adaptability
Data Source
AI summary
A control device for a vehicle includes an external force information acquisition unit configured to acquire external force information on external force acting on a vehicle that is an autonomous vehicle, an external force determination unit configured to determine a kind of the external force by using the external force information, and a traveling control signal generation unit configured to generate a traveling control signal for the vehicle in accordance with the kind of the external force.