Bearing Condition Monitoring via Power-Rotation Correlation
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Solution Overview
Problem
Existing methods for determining the condition of a bearing arrangement in a rotation device fail to account for various influences that can affect the bearing condition, leading to inaccurate assessments over time due to aging and operational factors.
Innovation Solution
A rotation device and method that utilize sensors and computational methods to determine current rotation and power parameters, establishing a power-rotation correlation to assess the bearing condition by measuring and evaluating parameters such as rotational speed, electromagnetic force, and power consumption, using techniques like polynomial fitting and machine learning to identify bearing health.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aging tests and stored characteristic curves are used to determine bearing condition, then the bearing condition can be estimated over time, but the method cannot recognize influences that are not considered during the aging tests
Solution Approach 1:
The patent changes the parameters used for bearing condition assessment from static aging factors and stored characteristic curves to dynamic operational parameters including real-time power consumption, rotational speed, torque, and current. By continuously monitoring how these parameters change during actual operation and comparing them against expected values, the system can detect bearing degradation and various operational influences (load changes, speed variations, temperature effects) that static aging tests cannot capture. This parameter transformation enables both accurate condition assessment and adaptability to different operational conditions.
2Ease of operation
If static aging factors and stored characteristic curves are used for bearing monitoring, then the monitoring method is simple, but it provides inaccurate assessments when operational conditions change
Solution Approach 1:
The patent implements a feedback-based monitoring system that continuously measures operational parameters (power, speed, torque, current) and compares them against expected values or reference data. The system provides real-time feedback on bearing condition by detecting deviations in the power-rotation correlation, allowing for dynamic adjustment and accurate assessment even when operational conditions change. This feedback mechanism maintains both ease of operation through automated monitoring and high measurement precision through continuous comparison and analysis.
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
Accurately determines the condition of the bearing arrangement by analyzing real-time power-rotation correlations, enabling timely maintenance and reducing the risk of failure by identifying wear or damage.
Implementation Method 1
an electromagnetic force and/or a voltage in a stator winding of the stator of the electric motor induced due to the rotation movement of the rotor of the electric motor
Data Source
AI summary
The present disclosure refers to a rotation device, particularly a flow producing device, as well as methods that are configured to determine a condition of a bearing arrangement of rotation device. The bearing arrangement bears a rotor of an electric motor and/or a rotor arrangement including the rotor rotatingly around a rotating axis. At least one rotation parameter is determined that describes the rotation around the rotation axis, as well as at least one power parameter that describes the power of the electric motor. The determination of the at least one rotation parameter and the at least one power parameter is carried out to a current observation point in time, particularly at least at one observation point in time during a determination time phase. The at least one rotation parameter and the at least one power parameter are evaluated in relation to one another and therefrom a condition parameter is determined describing the condition of bearing arrangement. Particularly for this purpose a linear component of a power-rotation-correlation between the at least one current rotation parameter and the at least one current power parameter is used.