Shovel Compound Motion Control for Operator Intent
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Solution Overview
Problem
Conventional hydraulic excavators with semi-autonomous excavation control systems perform boom up pivot operations without considering the operator's intention, posing a risk of unintended actions.
Innovation Solution
A shovel equipped with a controller that autonomously performs compound operations, including pivot operations, in accordance with the operator's intention, utilizing sensors and a hydraulic system to detect and respond to the operator's inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the excavation control system autonomously performs boom up pivot operation without notification, then the productivity is improved, but the reliability deteriorates due to risk of unintended actions
Solution Approach 1:
The system introduces feedback by notifying the operator through display devices when autonomous boom up pivot operations are activated. This feedback mechanism allows the operator to monitor and verify autonomous actions, preventing unintended operations while maintaining productivity benefits.
Solution Approach 2:
The system performs preliminary action by providing notification to the operator before the autonomous boom up pivot operation executes. This advance warning allows the operator to prepare or intervene if the operation is not intended, improving reliability without compromising the speed benefit.
2Productivity
If the system performs compound operations autonomously, then the productivity increases, but the device complexity increases
Solution Approach 1:
The control system achieves multi-functionality by integrating autonomous control capabilities for both attachment operations and pivot operations into a single system. This allows the system to perform multiple functions (autonomous excavation, autonomous repositioning) without requiring separate independent control systems, thereby limiting the increase in device complexity.
Data Source
AI summary
A shovel (100) according to embodiments of the present invention includes a lower travelling body (1), an upper pivot body (3) pivotably mounted to the lower travelling body (1), an excavation attachment (AT) rotatably mounted to the upper pivot body, and a controller (30) provided to the upper pivot body (3). The controller (30) is configured to autonomously perform a compound operation including an operation of the excavation attachment (AT) and a pivot operation. The controller (30) may be configured to, in response to an automatic switch (NS2) provided in a cabin (10) mounted to the upper pivot body (3) being operated, autonomously perform the compound operation.