Work Machine Controller for Backward Movement Trajectory
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Solution Overview
Problem
Existing control systems for work machines, such as bulldozers, do not effectively manage the operation of work implements when the machine is moving backward, limiting efficiency in terrain excavation and manipulation.
Innovation Solution
A control system and method that utilize a controller to operate the work implement according to a target trajectory during backward movement, using sensors and a processor to determine and adjust the position of the work implement based on current terrain data, ensuring efficient excavation and manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the work machine moves backward without specific control, then the machine can change direction and access different terrain areas, but the work implement operation becomes uncontrolled and work efficiency decreases
Solution Approach 1:
The control system dynamically adapts the work implement control based on the machine's movement direction. When moving backward, the controller automatically switches to backward movement control mode, which dynamically adjusts the target trajectory calculation and work implement operation parameters to match the reverse movement pattern, ensuring continuous efficient work operation regardless of direction
Solution Approach 2:
The system changes control parameters based on movement direction. The controller identifies backward movement through sensors and switches control modes, adjusting parameters such as target trajectory coordinates, work implement position targets, and control algorithms to optimize performance for backward operation, thereby maintaining high productivity in both forward and backward movements
2Device complexity
If conventional forward movement control is used during backward movement, then the control system remains simple, but the work implement cannot operate correctly according to the actual movement direction
Solution Approach 1:
The control system uses directional sensors to detect movement direction and dynamically switches between forward and backward control modes. This dynamic adaptation ensures the work implement operates correctly according to the actual movement direction without requiring completely separate control systems, maintaining reasonable complexity while improving reliability
Solution Approach 2:
The backward movement control system replicates the forward movement control architecture but with inverted coordinate systems and adjusted trajectory calculations. This copying approach allows the system to maintain consistent control logic while adapting to reverse movement, ensuring reliable operation without significantly increasing system complexity
Data Source
AI summary
A work machine includes a work implement. A control system for the work machine includes a controller configured to operate the work implement according to a target trajectory for a backward movement while the work machine is moving backward. A method is performed by a processor for controlling a work machine including a work implement. The method includes operating the work implement according to a target trajectory for a backward movement while the work machine is moving backward.