Angle Sensor Arrangement Adaptive Correction Amplification
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Solution Overview
Problem
Existing angle sensor systems face errors in measuring the angular position of rotors due to deviations in the layout of sine and cosine channels, caused by metallic conductive surroundings and printed circuit board conductor tracks, leading to inaccuracies in calculated angles.
Innovation Solution
An angle sensor arrangement that includes a measuring transducer, a measurement acquisition device, a signal processing device, a correction device, and an angle calculation device. This system adaptively calculates correction coefficients based on the current amplification factor, allowing for real-time correction of measurement signals to minimize angle errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If correction methods are applied to reduce angle measurement errors, then measurement precision is improved, but device complexity increases due to additional correction devices and adaptive calculation requirements
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing correction coefficients for different amplification factor settings in a lookup table or memory structure. During operation, the system simply retrieves the appropriate correction coefficients based on the current amplification factor setting, rather than performing complex adaptive calculations in real-time. This approach improves measurement precision through correction while minimizing the computational complexity and device resources required.
2Measurement precision
If adaptive correction coefficients are calculated based on current amplification factor, then angle error is minimized, but calculation time and processing complexity increase
Solution Approach 1:
The patent pre-calculates correction coefficients for various amplification factor settings and stores them in advance. When the amplification factor changes, the system retrieves the corresponding correction coefficients from stored data rather than performing complex adaptive calculations in real-time. This eliminates time-consuming computations during operation while maintaining high measurement precision through accurate correction.
3Adaptability or versatility
If correction coefficients are adjusted to current amplification factor setting, then manufacturing adaptability is improved, but ease of manufacture decreases due to additional calibration requirements
Solution Approach 1:
The patent performs the complex adaptation work during the manufacturing or initialization phase by calculating and storing correction coefficients for different amplification factor settings. Once these coefficients are stored in the system memory, the device can adapt to different amplification settings without requiring additional calibration procedures during installation or operation. This improves adaptability while simplifying the manufacturing and deployment process.
Data Source
AI summary
An angle sensor arrangement includes a measuring transducer, a measurement acquisition device, a signal processing device, a correction device, and an angle calculation device. The measurement acquisition device is configured to acquire at least one physical variable representing a current angular position of the measuring transducer and to output at least two measurement signals which each represent a current angular position of the measuring transducer. The signal processing device is configured to process the at least two measurement signals and to amplify each with a variably adjustable amplification factor and, if necessary, to digitize them and make the processed measurement signals available to the correction device. The correction device is configured to adaptively calculate at least one correction coefficient depending on the amplification factor currently set in the signal processing device and to correct the at least two processed measurement signals accordingly.