Integrated Rotary Position Sensor for Reliable Shaft Feedback
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Solution Overview
Problem
Existing rotary actuators lack an efficient and integrated mechanism to provide feedback on the rotational or angular position of the actuator shaft, which is crucial for controlling fluid flow in applications like vehicle cooling and ventilation systems.
Innovation Solution
A rotary position sensor with an integrated potentiometer that generates signals representing the rotational or angular position of the actuator shaft, comprising a housing, a barrel, and an electrical sub-assembly connected to a potentiometer component, allowing for precise position measurement and feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotary actuator is used to control fluid flow, then the actuator can rotate a shaft to move valve components, but the system lacks an integrated mechanism to provide feedback on the rotational position of the shaft
Solution Approach 1:
The patent combines the potentiometer component directly with the barrel assembly, creating an integrated position sensing mechanism. The potentiometer component is mounted on the barrel and rotates with it, eliminating the need for separate feedback mechanisms and reducing overall system complexity while providing reliable position feedback.
2Measurement precision
If an integrated potentiometer is added to the rotary position sensor, then position measurement precision is improved, but device complexity increases
Solution Approach 1:
The potentiometer component is integrated into the barrel assembly, sharing common structural elements and mounting features. This merging approach provides precise position measurement through the potentiometer while avoiding the complexity increase that would result from adding a completely separate sensing system.
Solution Approach 2:
The barrel assembly serves multiple functions: it provides mechanical support for the valve components, acts as a rotor for the potentiometer, and houses the position sensing mechanism. This multi-functionality reduces the need for additional components and simplifies the overall sensor structure while maintaining measurement precision.
3Manufacturing precision
If a rotary position sensor with integrated potentiometer is implemented, then control precision in fluid flow management is enhanced, but manufacturing complexity increases
Solution Approach 1:
The potentiometer component is designed to be mounted on the existing barrel assembly, utilizing its cylindrical outer surface for attachment. This integration approach enables precise control through accurate position sensing while simplifying manufacturing by reducing the number of separate components that need to be assembled and aligned.
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
Enables accurate and reliable feedback on the position of the actuator shaft, enhancing control precision in fluid flow management systems.
Implementation Method 1
A rotary position sensor with an integrated potentiometer that generates signals representing the rotational or angular position of an actuator shaft
Data Source
AI summary
A rotary position sensor for measuring the position of a rotating shaft comprises an upper housing and a lower housing arranged to be attached to the upper housing. A barrel is rotationally mounted to the attached upper and lower housings and coupled to the shaft is arranged to be positionable within the attached upper and lower housings by the shaft. A potentiometer component is mounted to the barrel and to an electrical sub-assembly that measures the position of the barrel and in response generates a position signal.