Vehicle Trailer Stability Control via Dynamic Subsystem Selection
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Solution Overview
Problem
Current vehicle stability control systems face challenges in effectively managing stability between vehicles and trailers, particularly in dynamic operating conditions, as they often rely on a single stability control subsystem without considering real-time data from multiple sources, leading to inadequate response to unstable conditions such as rollover, wheel slip, or loss of traction.
Innovation Solution
A system and method that utilize a controller to select the dominant stability control subsystem based on real-time data from various sensors, including velocity, height, steering, throttle, and traction control systems, automatically choosing between brake-based, torque management, and drivetrain-based stability control to provide optimal stability control for both vehicles and trailers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single stability control subsystem is used, then the system complexity is reduced, but the ability to respond to diverse unstable conditions deteriorates
Solution Approach 1:
The system dynamically switches between different stability control subsystems (brake-based, torque management-based, drivetrain-based) based on real-time operating conditions and detected unstable states, making the system adaptable without requiring all subsystems to operate simultaneously, thus maintaining low complexity while achieving high versatility
Solution Approach 2:
The system changes the active control parameter set by selecting different dominant subsystems based on the type of instability detected (rollover, wheel slip, loss of traction), allowing optimal response to each condition without permanently increasing system complexity
2Reliability
If multiple stability control subsystems are activated simultaneously, then the coverage of unstable conditions is improved, but the control precision deteriorates due to conflicting actions
Solution Approach 1:
The stability control system is segmented into distinct subsystems (brake-based, torque management-based, drivetrain-based), each responsible for specific types of instability, allowing targeted activation of only the relevant subsystem for each condition, thus maintaining control precision while achieving comprehensive coverage
Solution Approach 2:
The controller acts as an intermediary that receives input from all subsystems and sensor data, then selectively activates the appropriate subsystem based on the detected unstable condition, preventing conflicting actions while maintaining comprehensive coverage of all instability types
3Measurement precision
If real-time data from multiple sensors is processed, then the accuracy of instability detection is improved, but the processing time increases
Solution Approach 1:
The system continuously monitors and pre-processes data from multiple sensors (velocity, height, steering, throttle, traction) in real-time, maintaining ready-to-use processed data that enables immediate and accurate instability detection without delay when unstable conditions occur
Data Source
AI summary
A system and method for stability control of a vehicle and a trailer. The system and method can receive vehicle and trailer operating data or signals and define one of a brake-based stability control subsystem and a torque management-based stability control subsystem as the dominant stability control system. Based on the stability control subsystem defined as the dominant stability control system, the system and method provide stability control for the vehicle and the trailer.