Fixed axis moving magnet electric actuator

Abstract

The application discloses a fixed shaft type dynamic magnetic power-driven actuator. The fixed shaft type dynamic magnetic power-driven actuator comprises a shell, a first end cover, a second end cover, a stator, a rotor and an elastic support structure and also comprises a fixed shaft, wherein the first end cover and the second end cover are connected with the shell, the stator and the rotor are arranged in the shell, the stator is arranged at the outer side of the fixed shaft, the rotor is arranged at the periphery of the stator, the elastic support structure is connected with the rotor and the fixed shaft, one end of the fixed shaft is fixedly connected with the first end cover and arranged at the inner side of the first end cover, the other end of the fixed shaft extends out of the second end cover, a part, extending out of the second end cover, of the fixed shaft is provided with a thread structure, and the thread structure is used for being screwed into an installation hole of a controlled device. With a mode of the fixed shaft and bolt output, the fixed shaft type dynamic magnetic power-driven actuator is convenient to install; the elastic support structure is connected with the rotor and the fixed shaft, the rotor can be accurately positioned, various characteristics of the actuator are ensured, and favorable fatigue property is also achieved; and with the adoption of a rectangular structure, relatively high output of the actuator can be guaranteed, and a limited installation space also can be fully utilized.

Description

Technical field [0001] The invention relates to the technical field of active control of equipment vibration, in particular to a fixed-axis moving magnetoelectric actuator. Background technique [0002] Actuator is an important component in the active vibration control system. Its working principle is to apply control actions to the controlled object or system according to the output signal of the controller, and output force in the required manner, thereby changing the response of the controlled object or system . Currently commonly used actuators include servo-pneumatic, hydraulic, electromagnetic / dynamic and new intelligent actuators made of smart materials, such as piezoelectric materials, shape memory alloys, electric / magnetostrictive materials, and electric / magnetic Rheological materials, etc. The design and selection of actuators are closely related to the application, and are constrained by volume, structural form, demand force, demand power, cost and reliability. Comp...

AI Technical Summary

Problems solved by technology

[0003] The cage of the electric actuator usually adopts a leaf spring, which is easy to cause fatigue fracture under large displacement and long-term working conditions, and is easily damaged under impact, which cannot guarantee long-term operation requirements

At present, the actuator is basically a cylindrical structure, and most of the active control objects including diesel engines, the installation position of the actuator is not a circle, but a rectangular or irregular structure; most of the installation methods are combined by screws The installation of the transition plate is not very convenient and takes up a part of the limited installation space; and some actuators are equipped with coil holders, which occupy a part of the magnetic field gap with a large magnetic field strength.

Images