MEMS sensor-based fan blade vibration detection and control device

A technology for fan blades and control devices, applied in the field of automatic identification, can solve problems such as hindering the development of wind power technology, blade fracture failure, wind instability, etc., and achieve the effects of avoiding fan failure, accurate control, and avoiding blade flutter.

Active Publication Date: 2015-09-09
SHENYANG INST OF ENG
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AI Technical Summary

Problems solved by technology

[0002] With the increasingly prominent environmental and energy issues, wind energy, as a renewable and non-polluting green energy, has attracted more and more attention; wind power generation is one of the main forms of utilizing wind energy, and the fan blade is the core component of the fan. It is an important part of the energy conversion of the fan. During the rotation of the blade, when the blade turns from the top to the bottom, the force changes and changes alternately, as well as the instability of the wind, which will cause the vibration of the fan; the violent vibration of the fan blade Vibration can lead to cracks. If the vibration is not effectively controlled, it may cause the fracture and failure of the entire blade, resulting in huge economic losses; therefore, the vibration control of the blade is one of the important obstacles to the further development of wind power technology.

Method used

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  • MEMS sensor-based fan blade vibration detection and control device

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Embodiment Construction

[0018] Such as figure 1 As shown, the present invention provides a MEMS sensor-based fan blade vibration detection and control device, which consists of a MEMS sensor (1), a controller (2), a stepping motor (3), a mass block (4), a slideway (5 ), lead screw (6). The fan blade vibration control device of the present invention can effectively avoid blade vibration and avoid failure of the fan.

[0019] A MEMS sensor-based fan blade vibration detection and control device of the present invention is that the controller (2) receives the acceleration and vibration amplitude signals of the MEMS sensor (1), and when the vibration amplitude signal is close to the natural frequency of the fan, the step is controlled by the PID algorithm. The motor (3) changes the position of the mass block (4) in the fan blade, and at the same time changes the mass distribution of the fan blade, thereby changing the vibration frequency of the fan blade.

[0020] When the fan blades rotate, the control...

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Abstract

The invention provides an MEMS sensor-based fan blade vibration detection and control device, and consists of an MEMS sensor (1), a controller (2), a stepping motor (3), mass blocks (4), a slide rail (5) and a lead screw (6). The device changes the frequency of fan blades by controlling mass distribution of the mass blocks in the fan blades, thereby enabling the fan blades to be balanced, and achieving an effect of alleviating vibration. By adoption of a fan blade vibration active control system, blade vibration is effectively avoided, and preventing a fan failure from being caused.

Description

technical field [0001] The invention belongs to the technical field of automatic identification, and in particular relates to a vibration detection and control device for fan blades based on MEMS sensors. Background technique [0002] With the increasingly prominent environmental and energy issues, wind energy, as a renewable and non-polluting green energy, has attracted more and more attention; wind power generation is one of the main forms of utilizing wind energy, and the fan blade is the core component of the fan. It is an important part of the energy conversion of the fan. During the rotation of the blade, when the blade turns from the top to the bottom, the force changes and changes alternately, as well as the instability of the wind, which will cause the vibration of the fan; the violent vibration of the fan blade Vibration can lead to cracks. If the vibration is not effectively controlled, it may cause the failure of the entire blade, resulting in huge economic losse...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D19/02
Inventor 刘姝蒋洪亮王存旭赵琰单超曹福毅王晓文王宝石陈琳
Owner SHENYANG INST OF ENG
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