Low-cost high-precision Hall angle sensor design method and system
By using variable resistance and synthetic motion models in Hall-type angle sensors, combined with Kalman filtering technology, the problems of existing Hall-type angle sensors in external magnetic field interference and structural complexity are solved, and low-cost and high-precision angle measurement is achieved.
CN119716129AActive Publication Date: 2025-03-28JINZHOU LINGHAI GUANGHUA SCI & TECH CO LTD
2 Cites 0 Cited by
Patent Information
- Application Number
- CN202510237803.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2045-03-03
AI Technical Summary
Technical Problem
The existing Hall-type angle sensors have errors affected by external magnetic field interference, resulting in poor reliability, complex structure and high cost.
Method used
Design a low-cost and high-precision Hall-type angle sensor. By installing a variable resistor between the bearing and the PCB board, using synthetic motion model and Kalman filtering technology, the bearing rotation angular velocity is corrected in real time and the measurement accuracy is improved.
Benefits of technology
Real-time high-precision measurement of bearing rotation angular velocity is realized, reducing the impact of external magnetic field interference, simplifying the structure and reducing costs.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a low-cost and high-precision Hall type angle sensor design method and system. The method comprises the following steps: S1, constructing a Hall type angle sensor; s2, calculating the rotation angular velocity of the bearing by using a variable resistance voltage dividing principle; s3, fitting the rotation image of the bearing, and solving the rotation angular velocity of the bearing; s4, calculating the total distance between the bearing and the magnet based on the rotation angular velocity and the autorotation angular velocity of the bearing; s5, calculating an output voltage theoretical value of the Hall element; and S6, correcting the rotation angular velocity of the bearing based on the deviation between the measured value and the theoretical value of the output voltage of the Hall element. According to the invention, the variable resistor is adopted to realize real-time measurement of the bearing rotation angular velocity in the Hall angle sensor; and solving the rotation angular velocity of the bearing based on the rotation image of the bearing, and correcting the rotation angular velocity of the bearing by using the deviation between the measured value and the theoretical value of the output voltage of the Hall element, thereby realizing the real-time high-precision measurement of the rotation angular velocity of the bearing.
Need to check novelty before this filing date? Find Prior Art