Shaft Rotation Data Processing with Angle-Based Sector Sampling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for processing rotation-dependent measured values in machine tools are resource-intensive due to the high volume of data generated at low rotational speeds, particularly affecting memory and computing resources.
Innovation Solution
A device comprising a data converter, sequencing control, and output interface that subdivides the rotation of a shaft into sectors, using an angle value as a reference to allocate measured values and generate result values per sector, allowing for efficient processing and output of data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measured values are recorded at constant time intervals during shaft rotation, then the complete vibration behavior is captured, but the data volume becomes excessively large at low rotational speeds
Solution Approach 1:
The measurement data is segmented by dividing the shaft rotation into n sectors. Measured values are allocated to specific sectors based on angular position, and only one result value per sector per rotation is stored. This segmentation reduces the total number of stored values from proportional to rotation speed to a fixed number independent of rotation speed.
2Measurement precision
If a large number of measured values are stored per rotation, then detailed vibration analysis is possible, but memory and computing resources are excessively consumed
Solution Approach 1:
The invention extracts only the essential information from the measured data by selecting one representative result value per sector per rotation. This extraction process removes redundant data points while preserving the critical vibration characteristics, thereby reducing memory requirements and computational complexity for evaluation.
3Ease of operation
If measurements are taken at constant time intervals, then the measurement process is simple, but the number of measured values varies significantly with rotational speed
Solution Approach 1:
The invention transitions from time-based sampling to angle-based sampling. Instead of taking measurements at constant time intervals regardless of shaft position, measurements are allocated to angular sectors of the shaft rotation. This dimensional change from time domain to angular domain ensures that the number of measured values per rotation remains constant and independent of rotational speed.
Data Source
AI summary
A device for processing rotation-dependent measured values includes a data converter, a sequencing control, and an output interface. Series of measured values, which are a function of the rotation of a shaft and of which at least one is an angle value that indicates the angular position of the shaft, are conveyable to the data converter at constant time intervals of a measuring interval. The data converter is adapted to subdivide a rotation of the shaft into sectors and, using one of the angle values as a reference angle value, to allocate received measured values to a sector, and per rotation of the shaft, to ascertain for each series of measured values precisely one result value for each sector. The result values are able to be output to the output interface.