Construction Machine Bucket Control Device for Excavation Precision
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Solution Overview
Problem
Construction machine bucket control systems struggle to maintain a constant angle relative to the target excavation profile, leading to operator discomfort and inefficiency due to the lack of timely adjustment in bucket control.
Innovation Solution
A control device and method that acquire operational data to determine non-operation states and bucket control conditions, allowing for appropriate timing in initiating bucket control to maintain a constant angle, incorporating a working unit control unit to output control signals for maintaining the bucket's state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the bucket is always controlled at a constant angle relative to the target excavation profile, then the excavation precision is improved, but the operator feels strangeness and operation comfort deteriorates
Solution Approach 1:
The system dynamically switches between constant angle control mode and operation-responsive control mode based on real-time detection of operator input. When the operation device is actuated, the system transitions from maintaining a fixed constant angle to responding to operator commands, thereby adapting the control characteristics to current operational needs and eliminating the strangeness sensation.
Solution Approach 2:
The control system changes the control parameter from a fixed constant angle to a dynamically adjusted angle based on operator input detection. By monitoring the operational amount of the operation device and adjusting the bucket angle control strategy accordingly, the system optimizes both precision and operator comfort across different operational phases.
2Manufacturing precision
If the bucket control is started early, then the excavation precision is improved, but the operator operation freedom deteriorates
Solution Approach 1:
The system continuously monitors the operational amount of the operation device as feedback to determine the appropriate timing for activating constant angle control. By detecting when the operator releases or actuates the operation device, the system intelligently switches control modes, ensuring precision is enhanced only when operator input indicates readiness for automated control.
Solution Approach 2:
The system prepares for constant angle control activation by continuously monitoring operation device status in advance. When predetermined conditions are met (operator releases the operation device), the system automatically transitions to constant angle control mode, ensuring smooth and timely activation without compromising operator freedom during active manipulation.
3Adaptability or versatility
If the bucket control is delayed, then the operator operation freedom is maintained, but the excavation precision deteriorates
Solution Approach 1:
The system uses real-time feedback from the operation device operational amount to determine the optimal moment to activate constant angle control. By continuously monitoring operator input and detecting release states, the system activates precision control at the precise moment when operator intervention ceases, thereby maintaining both freedom during operation and precision during execution.
Solution Approach 2:
The control system automatically determines the appropriate timing for activating constant angle control based on its own monitoring of operation device status. The system serves itself by intelligently switching modes without requiring explicit operator commands, thereby maintaining operation freedom while ensuring precision control activates timely.
Data Source
AI summary
A control device for a construction machine includes an operational amount data acquisition unit configured to acquire operational amount data indicating an operational amount of the working unit, an operation determination unit configured to determine a non-operation state of a bucket on the basis of the operational amount data, a bucket control determination unit configured to determine whether bucket control conditions are satisfied, on the basis of determination of the non-operation state, and a working unit control unit configured to output a control signal for controlling the bucket to maintain a state of the working unit, when the bucket control conditions are determined to be satisfied.