Sideways Drift Correction for Mobile Production Machines
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Solution Overview
Problem
Existing mobile production machines, such as those used for creating curbs and footpaths, experience sideways drift during cornering due to inadequate detection and correction of movement, leading to inaccuracies in the structure produced, especially with sliding formwork machines.
Innovation Solution
A sideways drift correction device comprising a sensor component and an evaluation component that continuously records the movement of a reference point relative to the ground, using image recognition to determine and correct any drift, ensuring the machine moves in a straight line by deriving steering correction information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If steering angle measurement of crawler tracks is used to calculate machine orientation and track, then device complexity is reduced, but manufacturing precision deteriorates because sideways drift is not detected
Solution Approach 1:
The patent replaces the mechanical steering angle measurement system with an optical/image-based detection system. Instead of relying on mechanical sensors to measure crawler track steering angles, the system uses image capture devices to record the positions of multiple markers on the ground and calculates the actual machine trajectory and sideways drift from these images. This substitution allows detection of actual sideways drift that mechanical measurements would miss.
Solution Approach 2:
The patent introduces markers as intermediary objects placed on the ground to facilitate precise position detection. These markers serve as reference points that are captured in images, allowing the system to calculate the machine's actual path and sideways drift relative to the intended production line. The markers act as mediators between the machine's movement and the detection system, enabling accurate measurement of trajectory deviations.
2Manufacturing precision
If counter-steering of rear running gear is implemented to prevent sideways movement during cornering, then manufacturing precision is improved, but device complexity increases due to additional steering control mechanisms
Solution Approach 1:
The patent implements a feedback control system where the actual machine position and sideways drift are continuously detected using image processing of marker positions. This detected information is fed back to the control system, which then generates corrective steering commands for the crawler tracks. The feedback loop enables dynamic adjustment of steering to compensate for sideways drift, improving manufacturing precision without requiring complex mechanical counter-steering mechanisms.
3Manufacturing precision
If multiple sensors are used to detect reference line direction for guiding the machine, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The patent makes the image capture device multi-functional by using it for both capturing marker positions (for trajectory detection) and detecting reference line direction (for guidance). Instead of requiring separate sensor systems for these functions, a single camera system performs both tasks by processing different aspects of the captured images. This reduces device complexity while maintaining manufacturing precision.
Data Source
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AI summary
The invention relates to a sideways drift correction device for a mobile production machine comprising a removal of material and a tool for processing the removed material, having a sensor component and an evaluation component. The sensor component detects the structure of at least one part of the underground surface relative to which the production machine moves. The evaluation component determines the relative motion direction of a reference point on the production machine relative to the subsoil from the time-variable information of the underground surface, and derives steering correction information therefrom.