Tipping Avoidance System for Load-Dependent Braking Control
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Solution Overview
Problem
Existing collision avoidance systems for machines may cause tipping during braking due to unstable conditions, as they do not account for the machine's payload and load position, leading to undesirable forward tipping when decelerating.
Innovation Solution
A tipping avoidance system that determines a minimum stopping distance based on payload and load position signals, communicating with the braking controller to adjust the stop triggering distance and prevent tipping by modifying the braking operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a braking device is applied to prevent collision with sensed objects, then collision avoidance is improved, but the machine may tip forward due to unstable conditions
Solution Approach 1:
The system performs preliminary calculations of the minimum stopping distance based on payload and load position before activating braking. This allows the collision avoidance system to plan a braking maneuver that will not cause tipping, resolving the contradiction between collision avoidance and machine stability by pre-determining safe braking parameters
Solution Approach 2:
The tipping avoidance system continuously receives feedback from the payload determination system and load position determination system about the machine's current state. This feedback loop allows real-time adjustment of braking parameters to maintain both collision avoidance capability and machine stability during deceleration
2Loss of time
If braking force is increased to stop the machine faster, then stopping distance is reduced, but the likelihood of tipping forward increases
Solution Approach 1:
The system dynamically changes braking parameters based on payload and load position conditions. By calculating the minimum stopping distance as a function of these parameters, the system optimizes braking force application to achieve the shortest possible stopping distance without exceeding the tipping threshold, thus resolving the contradiction between stopping distance and stability
Data Source
AI summary
A tipping avoidance system configured to modify operation of a collision avoidance system. The tipping avoidance system may include a payload determination system configured to generate a payload signal, and a load position determination system configured to generate a load position signal. The tipping avoidance system may also include a tipping avoidance controller configured to receive the payload signal and the load position signal, and determine, based at least in part on the payload signal and the load position signal, a minimum stopping distance at or above which the machine will not tip due at least in part to deceleration of the machine from a travel speed to a stopped condition. The tipping avoidance controller may be configured to communicate with a braking controller, such that the braking controller adjusts a stop triggering distance based at least in part on the minimum stopping distance.