An Electromagnetic Actuator for Vibration Active Control

Abstract

The invention provides an electromagnetic actuator for the active control of vibration. The electromagnetic actuator comprises two end covers, a framework, an actuating rod, two shaft hubs, a machineshell, a coil, two spring sheets, a plurality of permanent magnets and a wiring port, wherein the two shaft hubs are symmetrically mounted at two ends of the interior of the ring-shaped framework; thepermanent magnets are sequentially and compactly spliced to the exterior of the framework as well as spliced to form two circles; air gaps are formed between the end covers and the permanent magnets;a bracket is arranged between the two end covers; the coil is wound around the bracket; the wound coil is arranged inside the machine shell and subject to injection molding together with the wiring port; the coil is connected with an external power source through the wiring port; the two spring sheets are correspondingly arranged in the two end covers in a press fitting manner; and the actuatingrod penetrates through the shaft hubs, is connected with the two spring sheets, and extends out of one end of one spring sheet so as to be connected with a device of which the vibration needs to be reduced. The electromagnetic actuator provided by the invention has the characteristic of being sensitive in response, and the high-precision active control of vibration can be better achieved.

Description

technical field [0001] The invention relates to an active damping device, in particular to an electromagnetic actuator used for active vibration control. Background technique [0002] Vibration active control refers to the application of a certain control strategy according to the detected vibration signal in the process of vibration control. After real-time calculation, a certain influence is exerted on the control target by driving the actuator to achieve the purpose of suppressing or eliminating vibration. Compared with the traditional passive control, it has the advantages of good vibration reduction effect and strong adaptability, so it has received extensive attention. [0003] Among them, the actuator is the key component to implement active vibration control, and its function is to exert control force on the control object according to the determined control law. Therefore, in order to achieve high-precision active vibration control, the design of high-performance a...

AI Technical Summary

Problems solved by technology

However, most of the existing electromagnetic actuators are difficult to be applied in the actual project of active vibration control due to problems such as complex structure, oversized size, high energy consumption, and low reliability.

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