Research Of Torque Sensor For Rolling Mills' Shaft Based On Energy And Signal's Wireless Transmission

With the improvement of the intension of steel rolling equipment, real- time detection for main transmission system is of great importance for improving the rolling efficiency. In order to solve the problems of long-time wireless energy supply and wireless transmission of the torque sensor's signal, strain torque measurement technology and radio technology are integrated in this paper.Firstly, this paper base opinions on lots of reference materials, and analyzes the status of domestic and foreign research on torque sensor. A model of rolling mill's measurement is set up by using lumped parameter model, and Matlab software is used to analyzes the coupling shaft's torsion process. A harmful torsional oscillation inhibiting model is set up based on feedback control. Secondly, in order to solve the problem of wireless energy supply in circumstance of rotation, a set of high frequency wireless inductive power supply is designed, and the function of wireless energy supply is realized. In this paper, we improved the traditional strain torque measurement. V/F inverter is used to transfer analog signals to square wave frequency signals, which was send to the subsequent circuit. A set of frequency-shift keying communication circuit is made by using MC2833 and MC3362. A sort of new type ring slot array antenna is studied and theoretical derivation of this antenna's radicalization in space is set up. Thirdly, real-time collection and disposal of the measurement signal are realized by using industrial computer and PCI-1712 DAQ card. A data acquisition program is programmed by using LabVIEW. Lastly, the principle of the torque sensor's test system are explained. Static and dynamic calibration experiments are completed. After error analysis, capabilities of the designed torque sensor are evaluated. Perhaps it will be lead into the product market in the future.