Magnetic focusing type sensor with variable number of turns and rotating speed and torque calculation method

Abstract

The invention provides a magnetic focusing sensor with variable turns and a rotating speed and torque calculation method, and belongs to the technical field of sensors. The problems that an existing sensor cannot measure the rotating speed and the torque at the same time and is complex in structure are solved. A magnetic focusing sensor with variable turns comprises a to-be-measured shaft and acquisition mechanisms, two ends of the to-be-measured shaft are respectively a shaft input end and a shaft output end, the acquisition mechanisms are respectively arranged at the shaft input end and the shaft output end, each acquisition mechanism comprises a fixing ring, a permanent magnet, a receiving coil and a housing, an inner ring of the fixing ring is connected with the to-be-measured shaft, and an outer ring of the fixing ring is connected with the to-be-measured shaft. The outer ring is connected with a plurality of permanent magnets, the plurality of permanent magnets are uniformly distributed along the circumferential direction of the fixed ring, each permanent magnet is of a conical structure, the receiving coil comprises a plurality of rectangular coils, and the plurality of rectangular coils are sequentially bent and arranged in a surrounding manner to form a circumferential shape. The rotating speed and torque calculation method is mainly used for measuring and calculating the rotating speed and the torque of the shaft.

Description

technical field [0001] The invention belongs to the technical field of sensors, in particular to a magnetic focus sensor with variable turns and a calculation method for rotational speed and torque. Background technique [0002] Existing sensors cannot measure speed and torque simultaneously. In the existing sensor, the excitation coil is fixed, the receiving coil rotates with the axis to be measured, and the signal is transmitted to the external device through wireless. In areas with strong magnetic fields, the signal will generate greater interference, which limits the use of the environment. Existing sensors for non-contact speed measurement are based on the principle of eddy currents. Eddy currents are nonlinear, and linear signals must be extracted through complex structural design, and there are alternating magnetic fields that excite the coil and eddy current fields of the rotor in the internal space of the sensor. , a complex decoupling structure needs to be design...

AI Technical Summary

Problems solved by technology

Existing sensors for non-contact speed measurement are based on the principle of eddy currents. Eddy currents are nonlinear, and linear signals must be extracted through complex structural design, and there are alternating magnetic fields that excite the coil and eddy current fields of the rotor in the internal space of the sensor. , it is necessary to design a complex decoupling structure

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