An anti-swing electromagnetic hybrid actuator

Abstract

The invention belongs to the technical field of vibration noise control, and particularly relates to a vibration active control technology. According to the technical scheme of a swing-resistant electromagnetic hybrid active actuation mechanism, a passive vibration isolator is composed of an upper cover plate, an airbag damper bag body, a lower cover plate and shell locking bolts and is used for suppressing medium-high frequency vibration of a controlled object; an active actuation mechanism body is composed of an upper armature, a middle armature, a lower armature, circular permanent magnets, annular permanent magnets, coil windings, a coil retainer, a middle screw, a fixing screw and a linear bearing; The permanent magnets and the armatures form a magnetic channel; current coils cut magnetic lines of force in the magnetic channel to generate electromagnetic force; and the distance between the upper permanent magnet and the coil windings is equal to the distance between the lower permanent magnet and the coil windings, so that it is ensured that the average magnetic field strength in the coils of the middle armature driven by the electromagnetic force is consistent, the magnitude of output force does not change with changes of strokes of the middle armature, and nonlinearity is avoided. It is ensured that the output force of the active actuation mechanism is normal when controlled equipment inclines or swings, and the stuck stagnation phenomenon of a conventional actuation mechanism is avoided.

Description

technical field [0001] The invention belongs to the technical field of vibration and noise control, in particular to active vibration control technology. Background technique [0002] Vibration and noise reduction is currently receiving widespread attention and attention. For the prominent low-frequency line spectrum existing in rotating power equipment, the current suppression measures include passive dynamic vibration absorption and active vibration isolation. Passive vibration absorption can only be better for a single constant frequency. However, in reality, the frequency of the equipment often drifts or the frequency of the equipment has a frequency conversion function that causes the frequency to change with different operating conditions. At this time, passive vibration absorption will no longer be applicable. For equipment with multi-line spectra and frequency changes, active vibration control technology has better adaptability. Active control can adaptively track fr...

AI Technical Summary

Problems solved by technology

For large-scale underwater combat weapons, there are tilting and swaying operating states. At present, active actuators in conventional designs have less consideration for anti-swaying performance. In order to speed up the application of active control technology for large-scale underwater combat weapons, it is necessary to combine Anti-swing performance design of active actuator

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