Electromagnetic actuators and motors on high-speed rotating shafts

Abstract

The invention discloses an electromagnetic actuator on a high-speed rotating shaft system. The high-speed rotating shaft system is supported at both ends of a mandrel by mechanical bearings, and the rotational speed of the mandrel is lower than the rated rotational speed of the mechanical bearings; The electromagnetic actuator includes a sensor detection device and an electromagnetic actuator installed on the mandrel, wherein the sensor detection device is used to detect the dynamic and static load information of the mandrel, and transmit the dynamic and static load information to the control system processing; the electromagnetic actuator is used to apply a force to the mandrel that counteracts the vibration of the mandrel according to the result obtained by the control system on the static and dynamic load information, so that the actual force on the mechanical bearing The bearing load is always close to zero, greatly improving the bearing capacity and service life of mechanical bearings, allowing smaller and higher-speed mechanical bearings to be used in equipment with greater load-bearing requirements. The invention also provides a motor.

Description

technical field [0001] The invention relates to the technical field of high-speed rotating machinery, in particular to an electromagnetic actuator and a motor on a high-speed rotating shaft system. Background technique [0002] The smaller the size of the mechanical bearing, the higher the speed and the smaller the load. Small size, high speed, increased load capacity and increased lifespan [0003] The main factors affecting the service life of mechanical bearings are load and speed, and the load includes two categories: dynamic and static loads. In order to reduce the impact of dynamic load or impact load on bearing life, damping and buffering structures are usually added to the stator of the bearing, for example, a structure using a tolerance ring or damping rubber ring is added outside the bearing. This type of structural design can effectively improve the life of the bearing. . However, due to the characteristics of mechanical bearings: the higher the speed of the me...

AI Technical Summary

Problems solved by technology

However, due to the characteristics of mechanical bearings: the higher the speed of the mechanical bearing, the smaller the size of the mechanical bearing, and the smaller the load carried by the mechanical bearing. Therefore, mechanical bearings still have problems such as narrow adaptation range, limited carrying capacity and life improvement.

Images