Self-Driving Working Machine Stability Control Against Tilting
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Solution Overview
Problem
Self-driving working machines experience stability issues due to lack of effective safety measures, leading to potential accidents during operation, particularly in construction sites.
Innovation Solution
A method and control device for determining operating variables of a working device and longitudinal dynamics of the machine, checking for hazardous stability states, and intervening in the machine's dynamics to prevent tilting and ensure stability through controlled braking and acceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the self-driving working machine operates with high dynamic aggressiveness (fast acceleration and braking), then productivity and operation speed are improved, but stability and safety deteriorate due to risk of tilting
Solution Approach 1:
The control device performs preliminary checks of operating variables and longitudinal dynamics to predict hazardous states before they occur. By evaluating the current state and predicting future states, the system takes preventive action to avoid instability while maintaining productive operation.
Solution Approach 2:
The system dynamically adjusts operational parameters based on real-time conditions. The control device modifies acceleration and braking behavior adaptively, allowing high productivity when conditions permit while ensuring stability when hazards are detected, thus resolving the contradiction between speed and safety.
2Reliability
If the machine implements comprehensive safety checks and interventions, then stability and safety are improved, but device complexity increases
Solution Approach 1:
The control device serves multiple functions: it determines operating variables, evaluates longitudinal dynamics, checks for hazardous states, and implements interventions. By consolidating these safety-related functions into a single multi-functional control unit, the system achieves comprehensive safety without proportionally increasing overall device complexity.
Solution Approach 2:
The control device autonomously monitors its own operational parameters and automatically intervenes when hazardous states are detected. The system serves itself by self-monitoring and self-correcting, eliminating the need for additional external safety systems and reducing overall complexity while maintaining high reliability.
Data Source
AI summary
A method for operating a self-driving working machine including determining an operating variable of a working device of the self-driving working machine and determining a longitudinal dynamics driving variable of the self-driving working machine. The method also includes checking whether a hazardous state for stability of the self-driving working machine can occur based on the determined operating variable and the determined longitudinal dynamics driving variable The method also includes intervening in longitudinal dynamics of the self-driving working machine depending on a check result based on the checking step.