Trailer Brake Control System Understeer Prevention
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Solution Overview
Problem
Trailers equipped with brakes become unstable during cornering, leading to undesirable conditions like jackknife or plow-out due to inadequate control of trailer brake application.
Innovation Solution
A system comprising a processor, memory module, trailer brake output circuit, and cornering attitude input that receives and processes cornering attitude signals to determine understeer or oversteer conditions, preventing trailer brake application during understeer and allowing it during oversteer to enhance stability and prevent lockup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If trailer brakes are applied during cornering to improve stopping performance, then braking effectiveness is improved, but vehicle-trailer stability deteriorates causing jackknife or plow-out
Solution Approach 1:
The system applies preliminary anti-action by detecting cornering conditions (understeer/oversteer) before brake application and preemptively preventing brake activation during unstable cornering states. The cornering attitude input and processor identify unstable conditions and block brake signals in advance, preventing the stability deterioration that would occur if brakes were applied during these critical moments.
Solution Approach 2:
The system implements dynamics by making the brake control system adaptive to changing cornering conditions. The processor continuously monitors cornering attitude signals and dynamically adjusts brake availability based on whether the vehicle is in understeer, oversteer, or stable cornering states, allowing braking when stable and preventing it when unstable.
2Stability of the object's composition
If a cornering attitude detection system is added to control trailer brakes during cornering, then vehicle-trailer stability is improved, but device complexity increases
Solution Approach 1:
The system applies universality by integrating cornering attitude detection and evaluation functions into the existing trailer brake controller processor. The processor performs both its traditional brake control function and the additional cornering stability management function, allowing one device to serve multiple purposes and reducing overall system complexity despite the added capability.
Solution Approach 2:
The system uses an intermediary approach by incorporating a cornering attitude input device that provides processed cornering information to the brake controller. This intermediary component translates complex vehicle dynamics into simplified signals that the brake controller can act upon, managing complexity through modular information processing rather than requiring the controller to directly analyze raw sensor data.
Data Source
AI summary
Systems, vehicles, and methods for controlling an application of a plurality of trailer brakes are disclosed. A system for controlling an application of a plurality of trailer brakes includes a processor, a memory module communicatively coupled to the processor, a trailer brake output circuit operatively coupled to the plurality of trailer brakes and communicatively coupled to the processor, a cornering attitude input communicatively coupled to the processor, and machine readable instructions stored in the memory module. When executed by the processor, the machine readable instructions cause the system to receive a cornering attitude signal from the cornering attitude input, determine when an understeer cornering attitude exists based on the received cornering attitude signal, and prevent the application of the plurality of trailer brakes by the trailer brake output circuit when the understeer cornering attitude is determined to exist.