Work Machine Travel Control for Cushioned Direction Switching
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Solution Overview
Problem
Work machines experience reduced work accuracy and transmit shocks to operators during sudden decelerations, particularly when switching between forward and backward travel.
Innovation Solution
An operation control method and system that adjust acceleration until the work machine reaches a target speed during speed reduction, based on user operation, using a travel control unit and acceleration adjustment processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the work machine decelerates suddenly during travel direction switching, then the travel speed changes quickly, but work accuracy is reduced and shocks are transmitted to the operator
Solution Approach 1:
The control system performs beforehand cushioning by adjusting acceleration until time during speed reduction to soften the deceleration process. This prevents sudden speed changes that would otherwise cause shocks to the operator and reduce work accuracy, while still achieving the required travel direction switching.
2Speed
If the work machine decelerates suddenly during travel direction switching, then the travel speed changes quickly, but shocks are transmitted to the operator
Solution Approach 1:
The control system performs beforehand cushioning by adjusting acceleration until time during speed reduction to soften the deceleration process. This prevents sudden speed changes that would otherwise cause shocks to the operator and reduce work accuracy, while still achieving the required travel direction switching.
3Object-affected harmful factors
If acceleration is adjusted until time during speed reduction, then shocks are reduced and work accuracy is maintained, but the speed control system becomes more complex
Solution Approach 1:
The control system uses feedback by monitoring the operator's operation state and automatically adjusting acceleration until time during speed reduction. This feedback mechanism smooths deceleration to reduce shocks while maintaining work accuracy, with the control unit automatically determining the appropriate acceleration adjustment based on real-time operation conditions.
Data Source
AI summary
The operation control method includes: executing travel control related to travel of the work machine; and adjusting acceleration until time at which a travel speed of the work machine reaches target speeds V1, V2 during the speed reduction of the work machine in accordance with a user's operation.