Vehicle Actuator State Feedback Bypass for Arbitration Failure
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Solution Overview
Problem
Existing vehicle control systems face challenges in reliably feeding back the state of an actuator to application execution units, especially when the arbitration function unit fails.
Innovation Solution
A vehicle control device and method that include a controller, a request arbitration unit, and a request generation unit, where the controller generates state information about the actuator and the request arbitration unit arbitrates requests from application execution units. The system includes a detection unit to identify abnormalities in the request arbitration unit and a second transmission unit to directly transmit state information to application execution units when the request arbitration unit is abnormal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the arbitration function unit is used to relay state information, then the system structure is simplified and centralized control is achieved, but the reliability of information transmission deteriorates when the arbitration unit fails
Solution Approach 1:
The state information transmission path is segmented into two independent channels: a normal path through the arbitration function unit and a backup path directly from the actuator to the application execution unit. This segmentation allows the system to switch paths when the arbitration unit fails, maintaining reliability while keeping the overall structure manageable.
Solution Approach 2:
The arbitration function unit serves as an intermediary for normal operation, but the invention introduces a bypass mechanism that allows state information to reach the application execution unit directly when the intermediary fails. This resolves the contradiction by providing both centralized control benefits and failure tolerance.
2Extent of automation
If the arbitration function unit is used to relay state information, then centralized control is achieved, but signal delay increases when the arbitration unit is abnormal
Solution Approach 1:
The system dynamically switches between two transmission modes: normal mode using the arbitration function unit for centralized control, and emergency mode using direct transmission to minimize delay. This dynamic adaptation resolves the contradiction by adjusting the control architecture based on the operational status of the arbitration unit.
Solution Approach 2:
The application execution unit is pre-configured with the capability to receive state information directly from the actuator, and the detection unit is ready to trigger the bypass path when arbitration unit failure is detected. This preliminary preparation ensures minimal delay when switching to emergency mode.
3Adaptability or versatility
If multiple applications control multiple actuators through arbitration, then resource coordination is improved, but system complexity increases
Solution Approach 1:
The invention extracts the state information transmission function from the arbitration function unit, allowing the arbitration unit to focus on resource coordination while state information can bypass it when needed. This separation reduces the complexity burden on the arbitration unit while maintaining its coordination capabilities.
Solution Approach 2:
The application execution unit is designed with multi-functionality: it can receive state information both through the arbitration unit (for coordinated control) and directly from the actuator (for independent operation). This universality allows the system to handle complex coordination scenarios without proportionally increasing overall system complexity.
Data Source
AI summary
A vehicle control device includes a controller configured to control an actuator and generate state information representing a state of the actuator, a request arbitration unit configured to arbitrate requests from a plurality of application execution units, and a request generation unit configured to generate a drive request signal to the controller. The controller includes a detection unit configured to detect whether or not the request arbitration unit is abnormal, a first transmission unit configured to transmit the state information to the request arbitration unit, and a second transmission unit configured to, when the detection unit detects that the request arbitration unit is abnormal, transmit the state information to the application execution units such that the state information does not pass through the request arbitration unit.