Shaft sleeve type permanent magnet rotation angle acceleration sensor

Abstract

The invention discloses a shaft sleeve type permanent magnet rotation angle acceleration sensor. The shaft sleeve type permanent magnet rotation angle acceleration sensor comprises an output winding, a stator iron core, permanent magnet excitation magnetic steel, a non-ferromagnetic material metal sleeve, a rotor winding, a rotor iron core, a shaft sleeve, a front end cover, a front bearing, an engine base, a back bearing and a back end cover, wherein the stator iron core is fixed in the non-ferromagnetic material metal sleeve; the non-ferromagnetic material metal sleeve is fixed in the engine base; the permanent magnet excitation magnetic steel is embedded in the stator iron core; the output winding is embedded in a winding groove of the stator iron core; the rotor iron core is concentrically fixed at the outer side of the shaft sleeve; the rotor winding is concentrically fixed on the outer side of the rotor iron core; the stator iron core is concentrically fixed on the outer side of the rotor winding; the rotor winding is an integral winding; the shaft sleeve is fixed in the front bearing and the back bearing; the front bearing and the back bearing are fixedly connected with the engine base through the front end cover and the back end cover respectively. The shaft sleeve type permanent magnet rotation angle acceleration sensor has higher sensitivity; furthermore, the shaft sleeve type structure is adopted, and the shaft sleeve type permanent magnet rotation angle acceleration sensor can be used by only being sleeved on the outer side of a rotating shaft of a rotation system, so that the shaft sleeve type permanent magnet rotation angle acceleration sensor is convenient to use, and simple to mount.

Description

Technical field [0001] The invention relates to a sensor, in particular to a shaft sleeve type permanent magnet rotation angular acceleration sensor. Background technique [0002] Rotational (angular) acceleration measurement is one of the most common measurements in mechanical measurement. The well-known permanent-magnet rotation (angular) acceleration adopts a cup-shaped rotor structure, and the inner stator adopts integral permanent magnet steel. The resistance is very large, the quadrature axis and the direct axis reluctance are equal, and the induced electric potential generated in the cup-shaped rotor by the rotation angular acceleration is limited. Therefore, the magnetic flux generated by the current generated by the electric potential will be small, so that the output winding The induced electric potential generated in the sensor will be very small, the sensitivity of the sensor is very low, and the sensor is coaxially connected with the rotating system under test by usi...

AI Technical Summary

Problems solved by technology

[0002] Rotational (angular) acceleration measurement is one of the most common measurements in mechanical quantity measurement. The known permanent magnet rotational (angular) acceleration adopts a cup-shaped rotor structure, and the inner stator uses integral permanent magnet steel. The resistance is very large, the reluctance of the quadrature axis and the direct axis are equal, and the induced potential generated by the rotational angular acceleration in the cup rotor is limited, so the magnetic flux generated by the current generated by the potential will be very small, so that in the output winding The induced potential generated in the sensor will be very small, and the sensitivity of the sensor is very low. Moreover, when the sensor is used, a connector is used to connect the sensor to the measured rotating system coaxially.

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