Stroke Sensor Installation Using Magnetic Reference Calibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing method of installing stroke sensors is complex due to the need to move the actuator after sensor installation, complicating the process and potentially affecting measurement accuracy due to positional shifts during attachment.
Innovation Solution
A method involving a magnetic field detecting element, a movable first magnet, and a processor that calculates an indicator value to adjust the sensor output, allowing for simple installation by using a second magnet to determine reference positions and adjust the processor output to compensate for positional shifts, thereby simplifying the installation process and maintaining measurement accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor is pre-installed in the actuator and the actuator is moved to compensate installation error, then the sensor characteristics can be rewritten accordingly, but the processes become complicated after the sensor is installed in the actuator
Solution Approach 1:
The patent applies preliminary action by pre-installing the sensor in the actuator at a predetermined position before final assembly. The sensor characteristics are measured and rewritten in advance, and the actuator is moved to a predetermined position beforehand. This allows the installation error to be compensated through pre-calibration rather than requiring complex post-installation adjustment processes.
Solution Approach 2:
The patent changes parameters by rewriting the sensor characteristics (output values) to compensate for installation errors. The sensor output is adjusted to correspond to the actual installed position, and the actuator position is adjusted to a predetermined reference position. This parameter adjustment eliminates the need for complex mechanical repositioning after installation.
2Measurement precision
If the actuator is moved after sensor installation to compensate error, then sensor characteristics can be adjusted, but further movement of the first magnet after attachment is required which complicates the process
Solution Approach 1:
The patent performs all necessary sensor calibration and actuator positioning adjustments as preliminary actions before final attachment. The sensor characteristics are rewritten and the actuator is moved to the predetermined position in advance, so that no further movement of the first magnet is needed after the sensor is attached to the actuator.
Solution Approach 2:
The patent replaces mechanical adjustment operations with electronic/software-based solutions. Instead of requiring manual movement and mechanical adjustment of the first magnet after attachment, the system uses software to rewrite sensor characteristics and electronically adjust the predetermined position, eliminating complex mechanical operations.
3Measurement precision
If the sensor is installed and then the actuator is moved for calibration, then measurement accuracy can be compensated, but the installation process becomes time-consuming
Solution Approach 1:
The patent performs sensor calibration and actuator positioning as preliminary actions during the assembly process rather than as separate post-installation steps. By measuring sensor characteristics and rewriting them in advance, and by positioning the actuator at the predetermined location before final attachment, the calibration is completed as part of the installation process itself, reducing total installation time.
Solution Approach 2:
The patent merges the sensor installation process with the calibration process. The sensor is installed, characterized, and calibrated in a single integrated operation rather than as separate sequential steps. The actuator positioning and sensor attachment are combined into one coordinated operation, eliminating idle time between steps.
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 enables a straightforward installation of stroke sensors while maintaining measurement accuracy by compensating for positional shifts, reducing the complexity of the installation process and ensuring precise calibration without requiring further movement of the first magnet after attachment.
Implementation Method 1
a magnetic field detecting element that detects a magnetic field, a first magnet that generates the magnetic field
Data Source
AI summary
A method of installing a stroke sensor that enables the stroke sensor to be adjusted in a simple process is provided. The method has the steps of: arranging a second magnet, relative to the magnetic field detecting element, at a physically determinable first reference position and obtaining an indicator value S1; attaching the first magnet and the magnetic field detecting element to structures different from each other, respectively, and positioning the first magnet, relative to the magnetic field detecting element, at a physically determinable second reference position, and obtaining an indicator value S2, wherein the second reference position corresponds to the first reference position; calculating ΔS=S1-S2, wherein ΔS is a difference between the indicator value S1 and the indicator value S2; and modifying a process in the processor such that a sum of the indicator value S and ΔS is outputted.