Torque Sensor Residual Magnetism Compensation
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Solution Overview
Problem
Residual magnetism in ferromagnetic components can interfere with the accuracy of torque measurements by sensors that rely on electromagnetism, leading to inaccurate readings.
Innovation Solution
A system and method that utilize a torque sensor and a computer to detect and account for the effects of residual magnetism by comparing voltage signals from multiple branches of the sensor, allowing for accurate torque measurement by modifying the signals to cancel out the influence of residual magnetism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a torque sensor relying on electromagnetism is used to measure torque on a ferromagnetic component, then torque measurement capability is achieved, but measurement precision deteriorates due to residual magnetism interference
Solution Approach 1:
The patent applies the principle of converting harm into benefit by utilizing the residual magnetism signal itself to correct the measurement error. The system detects the residual magnetism interference and uses this information to generate a compensation signal that cancels out the harmful effect, thereby converting the previously harmful residual magnetism into a useful correction mechanism that improves torque measurement accuracy
Solution Approach 2:
The patent implements feedback by continuously monitoring the sensor output signals for characteristics indicative of residual magnetism interference and using this feedback to dynamically adjust the torque measurement. The system processes the sensor signals, identifies residual magnetism effects, and applies real-time compensation to maintain accurate torque measurements despite the presence of residual magnetism
2Ease of manufacture
If fabrication techniques using magnetism are applied to ferromagnetic components, then manufacturing capabilities are improved, but residual magnetized regions are created that adversely affect sensor functionality
Solution Approach 1:
The patent applies preliminary action by preparing for and compensating for residual magnetism effects before they interfere with measurement. The system is designed to anticipate the presence of residual magnetism from fabrication processes and incorporates compensation mechanisms that are activated in advance, allowing the sensor to maintain reliability despite the unavoidable residual magnetized regions created during manufacturing
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 continuous monitoring of torque on components despite residual magnetism, ensuring precise measurements and extending the lifespan of rotating machines by identifying when torque exceeds predefined values.
Implementation Method 1
a torque sensor for sensing an electromagnetic characteristic of the component
Implementation Method 2
this region of residual magnetism can adversely influence the functionality of devices such as sensors that rely on electromagnetism
Data Source
AI summary
A system for measuring torque on a component having a residually magnetized region is provided. The system includes a torque sensor for sensing an electromagnetic characteristic of the component and transmitting a plurality of signals that are indicative of the electromagnetic characteristic. The system also includes a computer communicatively coupled to the torque sensor for receiving the signals. The computer includes a processor and a memory. The processor is programmed to determine, using the signals, that the torque sensor is affected by the residually magnetized region of the component.