Track Guide Sensor Pair Layout for Load Sensing Under Disturbances
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Solution Overview
Problem
Existing sensor devices for track guides suffer from a discrepancy between optimal signal quality and disturbance variable compensation, with sensors being either too close to maximize sensitivity or too far apart to effectively compensate for temperature and deformation influences.
Innovation Solution
A sensor device with overlapping sensor pairs arranged in the rolling direction, where each pair has load-dependent components differing significantly and disturbance variable-dependent components similar, enhancing signal quality while effectively compensating for disturbances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sensors are placed close together to maximize disturbance variable compensation, then disturbance variable compensation is improved, but signal quality and sensitivity to rolling body load decrease
Solution Approach 1:
The sensor device is divided into multiple sensor pairs, where each pair consists of two sensors arranged in the rolling direction. This segmentation allows the system to simultaneously achieve close spacing for disturbance compensation and sufficient separation for load sensitivity by processing signals from multiple pairs.
Solution Approach 2:
The patent transitions from considering only the distance between sensors in one dimension to optimizing the arrangement in multiple dimensions. By arranging sensors in pairs along the rolling direction and using overlapping pairs, the system achieves optimal compensation and measurement in a multi-dimensional configuration.
2Measurement precision
If sensors are placed far apart to maximize sensitivity to rolling body load, then signal quality is improved, but disturbance variable compensation becomes ineffective
Solution Approach 1:
The sensor device is divided into multiple sensor pairs, where each pair consists of two sensors arranged in the rolling direction. This segmentation allows the system to simultaneously achieve close spacing for disturbance compensation and sufficient separation for load sensitivity by processing signals from multiple pairs.
Solution Approach 2:
The patent combines multiple sensor pairs with overlapping arrangements to merge the advantages of both close and far sensor placements. The evaluation device processes signals from all pairs to simultaneously achieve disturbance compensation and load sensitivity.
3Reliability
If a reference sensor is placed outside the rolling path to compensate for temperature influence, then disturbance variable compensation is improved, but device complexity increases
Solution Approach 1:
The patent extracts the disturbance compensation function from a separate reference sensor placed outside the rolling path and integrates it into the existing sensor pairs within the rolling path. This eliminates the need for additional reference sensors while maintaining compensation capability.
Solution Approach 2:
The sensor pairs within the rolling path serve dual functions: measuring rolling body load and compensating for disturbance variables such as temperature. This multi-functionality eliminates the need for separate reference sensors and simplifies the overall device structure.
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
The solution improves signal quality and disturbance variable compensation by optimizing sensor pair positioning, resulting in stronger difference signals and reduced sensitivity to disturbances, enabling accurate load measurement.
Implementation Method 1
two meandering piezo-resistive thin-film sensors spaced apart in the rolling direction are arranged on each of the steel inserts of the rolling bearing
Data Source
AI summary
A sensor device for a rolling path insert of a track guide can be loaded by rolling bodies and is pressure-sensitive. The sensor device includes at least one tuple, extending in a rolling direction, of a number of sensors, which can each be signal-connected or are signal-connected to an evaluation device, by means of which a relevant difference signal can be determined from sensor signals of sensor pairs of the at least one tuple. The sensor device can be included in a rolling path insert, a guide carriage and a guide rail for a track guide, and a track guide.