水膜压力监测节点非接触供电耦合机构研究

Since the water-film pressure wireless monitoring node of water-lubricated bearing is installed coaxially and rotating with the shaft at high speed, its power supply becomes vital importance and difficult. To solve the above problems, a contactless power supply method was proposed in this study, the physical model of coupling mechanism and its equivalent circuit were established, and its characteristics were analyzed. Then, the primary and secondary side circuits of the coupling mechanism are compensated, further the output power and efficiency are simulated. Finally, it is verified by experiment. The results show that the simulation results are in good agreement with the experimental results. After SP compensation, the average output power of the coupling mechanism is 10.332 W, and the transmission efficiency is 69.84%, which can meet the requirements of contactless power supply for wireless monitoring nodes.