X-By-Wire Emergency Tolerance Control for Ageing Vehicles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing motor vehicles with X-by-wire systems face challenges in maintaining operational safety and redundancy when operated beyond their specified service life, as the predefined tolerance time intervals are based on a fixed duration and do not account for system ageing and wear.
Innovation Solution
A method is implemented to dynamically vary the tolerance time interval for emergency operation based on information signals representing the ageing and wear of the X-by-wire system, allowing the vehicle to be transferred to a safe operating state automatically, thereby enhancing operational safety and enabling flexible use beyond the specified service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed predefined tolerance time interval is used for emergency operation, then the system design is simple and based on classic service life, but the operational safety decreases when vehicles are operated beyond their defined service life
Solution Approach 1:
The patent applies the dynamics principle by transitioning from a static, fixed tolerance time interval to a dynamic, adjustable tolerance time interval. The computing unit continuously monitors the actual age of the X-by-wire system and dynamically adapts the maximum duration of the tolerance time interval based on the current system age and predefined age-dependent profiles. This allows the system to maintain high operational safety throughout the vehicle's entire service life, including periods beyond the classic 15-year service life, while managing the complexity through automated monitoring and adaptation routines.
2Adaptability or versatility
If the vehicle service life is extended beyond the defined 15 years, then the flexible use of the vehicle is improved, but the operational safety risk increases due to system ageing and wear
Solution Approach 1:
The patent implements feedback by continuously monitoring the actual age of the X-by-wire system and using this information to dynamically adjust the tolerance time interval. The computing unit receives age information from the X-by-wire system, compares it with predefined age-dependent profiles, and automatically adapts the maximum duration of the tolerance time interval accordingly. This feedback mechanism enables the vehicle to be operated safely beyond the classic service life while compensating for system ageing and wear through automated safety management.
3Ease of manufacture
If a fixed tolerance time interval is used, then the implementation is simple, but it cannot account for system ageing and wear over extended operation periods
Solution Approach 1:
The patent applies preliminary action by pre-defining age-dependent profiles that specify the maximum duration of the tolerance time interval for different system ages. These profiles are established in advance based on expected ageing and wear characteristics of the X-by-wire system. During operation, the computing unit simply retrieves the appropriate profile based on the current system age, avoiding the need for complex real-time ageing analysis while still accounting for system degradation over time.
Data Source
AI summary
A method for operating a vehicle, in particular a motor vehicle, with at least one X-by-wire system, wherein the vehicle is transferred to a safe operating state within a defined period of time in the event of emergency operation, and wherein a predefined tolerance time interval is specified for the emergency operation, during which the emergency operation can be maintained at a maximum, in particular without an unreasonable risk. At least one information signal representing aging and/or wear of the X-by-wire system is determined and a duration of the tolerance time interval is varied dynamically as a function of the information signal.