Abstract: Accurate measurement and effective control of the yarn tension which changes rapidly are important factors in textile manufacturing process. Hall-type Contact tension sensor detects the cantilever’s deflection induced by the tension of yarn. The error of the sensor increases due to the vibration of cantilever under quicker yarn tension variation. This paper established a mathematical model for the contact tension sensor based on dynamics principle. A numerical algorithm to restrain errors caused by vibration from sensor’s signal was developed according to the mathematical model. Then a test bench which includes a microprocessor and a high Accuracy A/D convert module was set for verifying the effect of the algorithm. The results show that error suppression algorithm based the dynamic model on can eliminate error of vibration caused by the rapid changes in tension effectively. This paper provides theoretical references for application of contact tension senor under dynamic conditions.

Key words: cantilever beam, Hall-effect, tension sensor, contact, dynamic measurement model