Track-Tamping Machine Position Correction via Inertial Measurement
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Solution Overview
Problem
The three-point method for track position improvement by track-tamping machines only achieves a reduction of 30-50% in track position errors, with residual errors causing feedback and limiting the effectiveness of corrections due to manual and intuitive adjustment of correction values, leading to incomplete track fault correction and reduced durability.
Innovation Solution
A computer calculates the difference between the desired and actual track positions, continuously correcting the rear cord end of the track-tamping machine's measurement carriage to guide it on the desired track position, using an inertial measurement system to prevent feedback and enable automatic ramping, thereby ensuring precise alignment and reducing human error.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual and intuitive adjustment of correction values is used, then ease of operation is improved, but measurement precision and manufacturing precision deteriorate
Solution Approach 1:
The patent replaces manual mechanical adjustment with an automated computer-controlled system that uses measurement data to calculate and apply correction values automatically, eliminating human error while maintaining operational simplicity
Solution Approach 2:
The patent implements a feedback loop where measurement systems continuously monitor track position, the computer processes this data to determine correction values, and the correction system applies adjustments, creating a closed-loop control system that progressively improves precision
2Manufacturing precision
If three-point method is used for track correction, then track position improvement is achieved, but residual errors cause feedback that limits effectiveness
Solution Approach 1:
The patent implements a feedback loop where measurement systems continuously monitor track position, the computer processes this data to determine correction values, and the correction system applies adjustments, creating a closed-loop control system that progressively improves precision and eliminates residual errors
Solution Approach 2:
The patent performs preliminary measurements and calculations before correction to determine optimal correction values, and performs follow-up measurements after correction to verify results and make additional adjustments if needed, ensuring complete elimination of errors
3Duration of action of stationary object
If more comprehensive track corrections are achieved, then track durability is improved, but measurement and control system complexity increases
Solution Approach 1:
The patent uses a single computer system that performs multiple functions including data acquisition from measurement systems, data processing and analysis, calculation of correction values, control of correction mechanisms, and generation of reports, eliminating the need for separate dedicated systems for each function
Solution Approach 2:
The system automatically performs measurements, calculates corrections, applies corrections, and verifies results without requiring manual intervention at each step, with the computer autonomously managing the entire correction process based on measured track conditions
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 method significantly improves track position accuracy, extending maintenance cycles, reducing costs, and enhancing track durability by achieving more comprehensive corrections and eliminating human error in the adjustment process.
Implementation Method 1
use of an inertial measurement system to prevent feedback and enable automatic ramping
Data Source
AI summary
A method is proposed for track position improvement by means of a track-movable track-tamping machine (6) with a three-point work measurement system having three measurement carriages (A, B, C) and a cord (9) stretched therebetween, a tamping unit (5), a lifting and straightening unit (8) for tracks and in particular an odometer. The position of the track after the correction work of the track-tamping machine (6) is recorded by means of a measurement system. In order to reduce the straightening error, it is proposed that a computer (R) calculates the difference between a predetermined desired track position (1) and an actual position recorded by the measurement system, i.e. a residual error (Kh), and in that the position of the rear cord end on the rear measurement carriage (C) of the track-tamping machine (6) of the three-point work measurement system is continuously corrected in such a way that the rear cord end on the measurement carriage (C) is guided on the desired track position (1).