Mobile Object Trajectory Control Using Mode-Based Event Acceptance
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Solution Overview
Problem
Existing electric vehicle travel support systems may not allow the vehicle to travel on a route suitable for the user, as they lack the ability to adapt and optimize trajectories based on user preferences and environmental conditions.
Innovation Solution
A control system for mobile objects that can operate in multiple modes, generating evaluation information for trajectories based on acceptance levels associated with each mode, allowing the system to determine and adjust trajectories to avoid unsuitable events and optimize routes for user satisfaction, comfort, and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electric vehicle uses a fixed travel support system, then the system structure is simple, but the vehicle cannot adapt to different user preferences and travel scenarios
Solution Approach 1:
The patent implements multiple operation modes (first operation mode emphasizing safety, second operation mode emphasizing efficiency) that allow the travel support system to dynamically adapt to different user preferences and travel scenarios. The control system switches between modes based on user selection, enabling the same physical system to exhibit different behavioral characteristics without requiring multiple separate systems.
Solution Approach 2:
The patent changes the acceptance level parameter for events based on the selected operation mode. In the first operation mode, the acceptance level for events like passing over steps or boundary crossings is set lower (more conservative), while in the second operation mode, the acceptance level is set higher (more efficient). This parameter adjustment allows the system to adapt its trajectory evaluation without hardware changes.
2Productivity
If the electric vehicle prioritizes travel efficiency, then the travel time is reduced, but the ride comfort and user satisfaction deteriorate
Solution Approach 1:
The system dynamically adjusts trajectory evaluation criteria based on the selected operation mode. When efficiency is prioritized (second operation mode), the system allows trajectories with higher acceptance levels for certain events, enabling faster travel. When comfort is prioritized (first operation mode), the system uses stricter evaluation criteria. This dynamic adjustment resolves the contradiction by allowing the same system to optimize for different goals depending on user preference.
Solution Approach 2:
The acceptance level parameter for evaluating trajectory events is changed based on operation mode. The control system generates different evaluation information for the same trajectory depending on whether the first or second operation mode is active, allowing flexible optimization between efficiency and comfort without compromising either extreme.
3Reliability
If the electric vehicle avoids all potential events strictly, then the user safety is improved, but the travel route flexibility and speed are reduced
Solution Approach 1:
The patent introduces an acceptance level parameter that quantifies the risk threshold for allowing certain events. In the first operation mode, the acceptance level is set lower, requiring stricter safety conditions and avoiding more events. In the second operation mode, the acceptance level is raised, allowing the vehicle to take calculated risks for improved speed. This parameter-based approach resolves the contradiction by making safety requirements adjustable rather than fixed.
Solution Approach 2:
The system dynamically adjusts its safety criteria based on the selected operation mode rather than maintaining a fixed safety threshold. The control system generates mode-dependent evaluation information that balances safety and speed requirements, allowing the vehicle to be more conservative when safety is prioritized and more aggressive when speed is prioritized.
Data Source
AI summary
A control system of a mobile object that can move in any one operation mode determined from a plurality of operation modes is provided. The control system includes: a storage device configured to store instructions; and one or more processors, wherein the one or more processors execute the instructions stored in the storage device to: generate evaluation information for a trajectory of the mobile object including a trajectory on a sidewalk; each of the plurality of operation modes being associated with an acceptance level for an event that may occur when the mobile object moves along a trajectory; and generate the evaluation information for the trajectory based on the acceptance level in the operation mode associated with an event that occurs when moving along the trajectory.