Vehicle Motion Manager for Backup Holding Device Abnormality Reporting
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Solution Overview
Problem
The increasing number of categories of holding devices used as backups to maintain a vehicle's stopped state leads to a design burden, including time and cost, due to the need to preset information for each category.
Innovation Solution
A motion manager that requests actuators to move the vehicle based on kinematic plans, including a first holding device and a second holding device as backups, transmits predetermined information indicating abnormality and control status of the second holding device without identifying its category, allowing the setting device to grasp the control status and abnormality regardless of the category.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the motion manager transmits information on the holding device to be used as the backup to the applications, then the applications can acquire information such as control status and abnormality, but the motion manager is required to set the information to be transmitted for each category of holding device, causing a design burden
Solution Approach 1:
The motion manager transmits unified information about the backup holding device's control status and abnormality without specifying the device category. This universal approach allows the same information transmission mechanism to serve multiple categories of holding devices (electric parking brake, parking lock system, etc.), eliminating the need for separate presetting for each device type while maintaining reliable information delivery to applications
2Loss of information
If the motion manager presets information for each category of holding device, then the applications can receive accurate category-specific information, but the design time and cost increase
Solution Approach 1:
The patent extracts only the essential information elements (control status and abnormality indication) from the holding device information, separating them from the device category identification. This extraction allows the motion manager to transmit sufficient operational information to applications without including category-specific details that would require separate presetting, thereby maintaining information accuracy while reducing design time and cost
Data Source
AI summary
A motion manager is configured to request at least one of a plurality of actuators provided in a vehicle to move the vehicle in accordance with a kinematic plan. The actuators includes a second holding device having the holding function and being configured to execute backup control. The motion manager includes one or more processors configured to: receive information indicating the kinematic plan from a setting device; distribute, to at least one of the actuators, a motion request for the vehicle calculated by using the kinematic plan; and transmit, to the setting device, predetermined information including information indicating whether an abnormality has occurred in the holding function of the second holding device and information indicating a control status of the second holding device, and not including information for identifying a category of the second holding device.