To address the issue of wireless power supply for torque torsional vibration sensors on rotating shaft systems

a flexible waveform receiving coil is designed to power the sensors on rotating shaft systems.The design concept and working principle of the device are introduced

and a mathematical model for the output voltage of wireless power supply is derived.Theoretical calculations and electromagnetic simulation comparative analysis are conducted using simulation software.Simulation results indicate that under low-speed DC excitation

the rotational speed has a strong linear relationship with the induced voltage

and the voltage value under AC excitation is higher at the same rotational speed

verifying the feasibility of the receiving coil.Further

through rotor modal simulation analysis

the flexible waveform receiving coil is lighter in weight and has a higher critical speed for the rotating shaft and reduces the impact on the dynamic balance of the rotating shaft system.