Crane Load Angle Correction via Optical Error Compensation
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Solution Overview
Problem
Existing methods for determining the pendulum and rotation angles of loads on cranes via cable-like fastening means are prone to systematic errors due to inadequate installation or adjustment of optical detection devices, leading to inaccurate angle measurements, which can be costly and time-consuming to correct.
Innovation Solution
A method that accounts for systematic errors in optical detection systems by using mathematical models and control engineering observer models to determine and correct for errors, allowing for accurate determination of pendulum and rotation angles without the need for complex manual adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical detection devices are used to detect pendulum and rotation angles, then measurement capability is provided, but systematic errors occur due to inadequate installation or adjustment
Solution Approach 1:
The patent uses feedback by continuously monitoring the relationship between the optical detection device and the load, detecting deviations from the correct detection position, and generating correction signals to compensate for systematic errors in real-time
Solution Approach 2:
The patent replaces manual mechanical adjustment and calibration of the optical detection device with an automated electronic system that uses sensors, processors, and algorithms to detect and correct measurement errors programmatically
2Measurement precision
If manual adjustment and calibration of optical detection devices is performed, then measurement accuracy can be improved, but time and costs increase
Solution Approach 1:
The system performs self-calibration by automatically detecting its own installation errors and compensating for them through computational correction, eliminating the need for external manual intervention
Solution Approach 2:
The patent implements preliminary error detection and correction algorithms that are prepared in advance and automatically executed when the system is deployed, preventing the need for time-consuming post-installation calibration
3Ease of operation
If optical detection devices are installed in less optimal positions, then installation flexibility increases, but measurement accuracy decreases
Solution Approach 1:
The patent changes the parameters of the detection system by introducing error detection and correction algorithms that allow the system to maintain accuracy despite variations in installation position, enabling flexible mounting locations
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables reliable and efficient determination of error-free pendulum and rotation angles, reducing the need for manual calibration and allowing for the use of optical detection devices in less optimal positions, thereby saving time and resources while ensuring accurate load monitoring.
Implementation Method 1
at least one optical detection device for detecting a swing angle and/or rotation angle of the load is provided on the crane
Data Source
Figure 1
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AI summary
The invention relates to a method for determining at least one pendulum angle and/or rotation angle of a load suspended from a crane via at least one rope-like fastening device, wherein the crane has a boom and a trolley to which the load is attached via the at least one rope-like fastening device, and wherein at least one optical detection device for detecting a pendulum angle and/or rotation angle of the load is provided on the crane, wherein a pendulum angle and/or rotation angle of the load is detected by means of the at least one optical detection device, wherein it is assumed that the detected pendulum angle and/or rotation angle is subject to a systematic error caused by the at least one optical detection device, and the value of the systematic error with which the detected pendulum angle and/or rotation angle is subject is determined.Furthermore, the invention relates to a method for damping pendulum movements and/or rotational movements of the load as well as a crane.