Mobile Loader Stability Control for Dynamic Tipping Prevention
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Solution Overview
Problem
Existing mobile machines face instability issues during operation due to driving dynamics, which are not adequately addressed by existing safety devices that only consider stationary conditions, leading to a risk of tipping over, especially when moving on uneven terrain or during acceleration and braking maneuvers.
Innovation Solution
A mobile machine equipped with sensory detection systems for operating mode analysis and an evaluation unit to automatically trigger torque counteracting tipping moments through actuators, allowing for preventive and corrective measures to stabilize the machine's driving dynamics, including inclination adjustments and differential steering or braking actions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If existing safety devices lock the loading system during stationary unstable conditions, then stability is improved, but driving dynamics stability remains insufficient
Solution Approach 1:
The safety device transitions from a static locking mechanism to a dynamic control system that continuously monitors driving parameters (acceleration, steering angle, speed) and actively adjusts brake torque distribution to counteract tipping moments during motion
Solution Approach 2:
The system changes operational parameters by detecting driving dynamics parameters and adjusting brake torque distribution in real-time to counteract tipping moments, adapting the safety response to the specific driving conditions
2Productivity
If the machine operates on uneven terrain or during acceleration/braking maneuvers, then productivity is improved, but the risk of tipping over increases
Solution Approach 1:
The system performs preliminary stabilization by detecting potential tipping conditions through driving dynamics parameters and preemptively adjusting brake torque distribution to counteract tipping moments before they cause instability
Solution Approach 2:
The control system continuously monitors driving dynamics parameters and provides feedback to the brake actuator, creating a closed-loop control system that automatically adjusts brake torque to maintain stability during productive operations
Data Source
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AI summary
The mobile machine e.g. telescopic handler (1) has an evaluation unit for detecting an emergency situation of an operator. A control unit is provided for the automatic triggering of an overturning moment, after detection of the emergency situation which includes the risk of tipping of the machine. The counteracting torque is produced in a reaction by the control unit for reducing the tilting moment during the machine drive by an actuator to achieve a stable operating condition.