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Resonance tuning type large-output-force electromagnetic active actuator

An active actuator and electromagnetic technology, applied in the field of actuators, can solve problems such as the limitation of the available range, and achieve the effects of compact structure, adaptable frequency bandwidth, and high sensitivity

Inactive Publication Date: 2014-01-08
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stiffness of the spring is a fixed value, and only when the coil current is at a fixed frequency can resonance increase the output force, so the available range is limited

Method used

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  • Resonance tuning type large-output-force electromagnetic active actuator
  • Resonance tuning type large-output-force electromagnetic active actuator
  • Resonance tuning type large-output-force electromagnetic active actuator

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Embodiment Construction

[0017] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0018] combine Figure 1~6 , the invention is an electromagnetic active actuator. It is an important component in active vibration control. The present invention is mainly composed of two parts, that is, an electromagnetic actuator and a stiffness adjustment mechanism. As the output mechanism of the actuator, the electromagnetic actuator is composed of a magnetic yoke, a permanent magnet, an electromagnetic coil, and a shaft sleeve. The size of the control output can be changed by adjusting the size of the energized current in the electromagnetic coils 7 and 9 . The stiffness adjustment mechanism is mainly composed of a spring, a sliding mechanism and the like. The permanent magnet, magnetic yoke iron, gasket and spring in the whole actuator constitute a mass spring system. By adjusting the position of the spring, its natural frequency is changed. When its na...

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Abstract

The invention aims at providing a resonance tuning type large-output-force electromagnetic active actuator which comprises an outer barrel, an end cover and a permanent magnet, a magnetic yoke, a center shaft, a coil, a coil rack, a shaft sleeve, a cushion plate and a sliding system installed in the outer barrel, wherein the sliding system comprises a spring, a positioning mechanism, pulleys, nuts and knobs, one end of the spring is fixed on the cushion plate, and the other end is installed on the positioning mechanism; the quantity of the pulleys is two, the positioning mechanism penetrates through the two pulleys so that the pulleys rotate around the passing shaft and the relative position of the two pulleys is unchanged, and each pulley is connected with the nut and the knob; the nuts and the knobs are located outside the outer barrel, and the pulleys are located inside the outer barrel; and a sliding way for the sliding system to move is arranged on the outer barrel. The resonance tuning type large-output-force electromagnetic active actuator has compact structure, large output force, high sensitivity and wide applicable frequency band.

Description

technical field [0001] The invention relates to an actuator in the field of active vibration control. Background technique [0002] An actuator, also known as an actuator, is a device in a control system that receives a control signal and converts it into a corresponding displacement or force that is applied to the controlled system. Actuators can be divided into three types: pneumatic, electric and hydraulic actuators according to the energy they drive. Among them, pneumatic actuators and hydraulic actuators have disadvantages such as large volume, narrow frequency response, and relatively lagging action. The actuator used in the active vibration control system should have the characteristics of fast response and large output, so the electromagnetic actuator is a better choice. [0003] The traditional electromagnetic actuator is fixed by a permanent magnet, and the force of the electromagnetic coil is used to drive the ejector rod to move together to output the force out...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K33/00H02K33/18
Inventor 刘学广王晔杨铁军朱明刚刘志刚冯肖肖史晔
Owner HARBIN ENG UNIV
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