Tilt Rotator Posture Control for Easier Work Machine Operation
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Solution Overview
Problem
Operators face difficulties in controlling work machines equipped with attachments supported by a tilt rotator, which offers high rotational freedom but is challenging to operate effectively.
Innovation Solution
A system comprising a processor that acquires sensor measurements, calculates the attachment's posture relative to the vehicle body, and generates control signals for the tilt rotator to maintain the desired posture based on operator inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a tilt rotator is attached to provide high rotational freedom to the attachment, then the adaptability of the work machine is improved, but the ease of operation deteriorates
Solution Approach 1:
The control system continuously acquires measurement values from sensors (inclination sensor, azimuth sensor, boom angle sensor, arm angle sensor, bucket angle sensor) and uses this feedback to automatically calculate and adjust the tilt rotator's posture. This closed-loop feedback mechanism eliminates the difficulty of manual operation while preserving the high rotational freedom capability
Solution Approach 2:
The system performs self-control by automatically calculating the required tilt rotator angles based on sensor measurements and operation signals, without requiring manual intervention for complex coordination. The attachment effectively controls itself through automated posture calculation and execution
2Ease of operation
If automated control is implemented to assist operation, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The control device integrates multiple functions into a single system: it processes operation signals, acquires data from multiple sensors, calculates complex posture adjustments, and controls the tilt rotator. This multi-functional integration achieves automated operation assistance while consolidating complexity into a unified control architecture
3Manufacturing precision
If precise posture calculation is performed based on multiple sensor measurements, then the manufacturing precision of control is improved, but the loss of time for processing increases
Solution Approach 1:
The control system continuously acquires measurement values from all sensors and continuously calculates the attachment posture relative to the vehicle body. This continuous processing ensures precise posture control is maintained at all times during operation, without interruption or batch processing delays
Data Source
AI summary
A measurement value acquisition unit acquires measurement values from a plurality of sensors. A posture calculation unit calculates a posture of an attachment with respect to a vehicle body based on the measurement values. An operation signal acquisition unit acquires an operation signal from an operation device. An intervention control unit generates a control signal for the tilt rotator so that the posture of the attachment is held, based on the operation signal. An output unit outputs the generated control signal.