Trailer Brake Control Device Dynamic Force Adjustment
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Solution Overview
Problem
Existing snaking braking devices for trailers are not optimally designed, as they rely on statically specified target actuating forces for wheel brakes, which are inadequate for dynamic loading conditions and lack real-time mass detection, leading to inefficient stabilization braking.
Innovation Solution
A brake control device connected to an acceleration sensor and controllable brake actuators that dynamically adjust the target actuating force based on detected snaking movements, allowing for continuous or discontinuous changes in the setpoint actuating force during stabilization braking, even without knowledge of the instantaneous mass or mass distribution of the trailer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If statically specified target actuating force is used for trailer snaking braking, then the control system is simple, but the braking effectiveness under dynamic loading conditions deteriorates
Solution Approach 1:
The patent applies dynamics by transitioning from static target actuating force specification to dynamic adaptation of the target actuating force during stabilization braking. The brake control device continuously adjusts the target actuating force based on detected snaking movements and force application feedback, enabling the system to respond to changing loading conditions and trailer dynamics in real-time.
Solution Approach 2:
The patent implements feedback by using the actual applied braking force as a basis for adapting the target actuating force during stabilization braking. The brake control device monitors the force actually applied to the wheel brakes and uses this information to dynamically adjust subsequent target forces, creating a closed-loop control system that improves braking effectiveness without requiring complex mass detection.
2Manufacturing precision
If mass detection device is added to adjust target actuating force, then braking precision improves, but device complexity and cost increase
Solution Approach 1:
The patent applies self-service by enabling the brake control device to automatically adapt the target actuating force using information already available from the snaking movement detection and force application monitoring. The system serves itself by using the actual applied force as feedback to determine subsequent target forces, eliminating the need for external mass detection devices while maintaining precise braking control.
Solution Approach 2:
The patent implements parameter changes by dynamically modifying the target actuating force parameter during stabilization braking based on the actual applied force and detected snaking movements. This allows the system to adapt braking precision to current operating conditions without requiring physical changes to the trailer mass or addition of complex detection equipment.
3Productivity
If high target actuating force is applied to stop snaking movements quickly, then stabilization speed improves, but risk of wheel lock and trailer sway increase
Solution Approach 1:
The patent applies periodic action by implementing pulsating braking interventions that cyclically apply and release braking force during stabilization. The system alternates between applying target actuating force and allowing force release, creating a rhythmic braking pattern that maintains stabilization effectiveness while preventing sustained high force application that could cause wheel lock or induce trailer sway.
Solution Approach 2:
The patent implements partial action by applying braking force in controlled pulses rather than continuous maximum force. The system uses intermittent target actuating force adjustments that provide sufficient stabilization effect without consistently applying excessive force that would lead to wheel lock or adverse trailer dynamics.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables effective stabilization braking by adjusting the braking force in real-time, effectively limiting or ending snaking movements regardless of the trailer's loading state, without the need for mass detection, thus improving the stability of trailers under varying conditions.
Implementation Method 1
connected to an acceleration sensor (ESP sensor)
Implementation Method 2
at least one controllable brake actuator... generates an actuating force for at least one wheel brake
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
The invention relates to a brake control device (11) for a trailer anti-sway braking device (10), which can be connected to or is connected to an acceleration sensor (12) and at least one controllable brake actuator (13). The brake actuator (13) generates an actuating force (FB) for a wheel brake (3) of the trailer (1) to perform stabilization braking. The target actuating force (FB) for brake intervention is modified during stabilization braking. It is increased in an interval-based scheme AND/OR force curves (K1, K2, K3) are provided, in particular several sets of force curves (K1, K2, K3), according to which the target actuating force (FB) for stabilization braking is generated and modified. Furthermore, an associated trailer anti-sway braking device (10), a brake force control method, and a software product for executing the brake force control method are disclosed.The figure intended for publication with the summary is Figure 1.