Automotive Driving Mode Change Control via Distributed Verification
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Solution Overview
Problem
Existing systems for managing a change in driving mode in motor vehicles are complex and lack robustness, failing to execute mode changes if any vehicle dynamics control device is in an unsatisfactory operating state.
Innovation Solution
A method and system that allow for a simple, robust, and reliable change in driving mode by selecting criteria based on the operating state of vehicle dynamics and atmosphere control devices, validating stability and comfort conditions, and initiating changes sequentially or simultaneously through autonomous control units connected via an on-board network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a centralized selection device continuously exchanges data with all control systems to verify operating status before mode change, then the system ensures comprehensive verification of all control systems, but the device complexity increases and the system lacks robustness when one control system has unsatisfactory operating state
Solution Approach 1:
The patent divides the centralized verification function into distributed autonomous verification units. Each control device independently checks its own operating state and communicates only essential information to others, eliminating the need for a complex centralized verification system while maintaining comprehensive coverage.
Solution Approach 2:
Each control device performs self-verification of its operating state and autonomously determines its capability to execute the mode change. This self-service approach replaces the centralized verification mechanism, reducing system complexity while ensuring each component validates its own readiness.
2Reliability
If the system requires all control systems to be in satisfactory operating state for mode change, then the system ensures safety and stability, but the productivity decreases as mode change cannot be achieved when one system has issues
Solution Approach 1:
The patent allows mode change to proceed with partial participation of control systems. Instead of requiring all systems to be in satisfactory state, the system identifies which systems are capable and executes the mode change using only those systems, achieving progress rather than complete failure.
Solution Approach 2:
The system dynamically adjusts the verification criteria based on actual operating conditions. When some systems are in unsatisfactory state, the verification parameters are modified to accommodate the current situation while maintaining essential safety requirements, enabling flexible mode transitions.
3Speed
If multiple control devices simultaneously initiate driving mode change, then the system achieves instantaneous response, but the measurement precision of vehicle stability conditions becomes difficult to control
Solution Approach 1:
Each control device performs preliminary verification of stability conditions (steering wheel torque and angle variations) before initiating the mode change. This pre-check ensures that simultaneous initiation by multiple devices does not compromise stability, as each device independently confirms conditions are acceptable before acting.
Data Source
Figure 1~5
AI summary
Method and system for managing a change of mode of driving of an automotive vehicle comprising the following steps: - reception (25) of a request relating to a mode of driving by at least one device for controlling the dynamics (3) of the vehicle and at least one device for controlling driving ambiance (4) of the vehicle; - selection (26) of criteria (18, 23) of change of driving mode as a function of said request received carried out by said at least one device for controlling the dynamics (3) of the vehicle and by said at least one device for controlling driving ambiance (4); - validation (27) of conditions of achievement of the change of driving mode by said at least one device for controlling the dynamics (3), and - initiation (30) of the change of driving mode by said at least one device for controlling the dynamics (3) of the vehicle and said at least one device for controlling driving ambiance (4).