On-line dynamic balance adjustment system based on temperature-controlled shape memory alloy and control method thereof

A technology of memory alloy and adjustment system, which is applied in the direction of controlling mechanical energy, centering/balancing rotors, electric components, etc. It can solve problems that cannot be solved by off-line balance, nonlinear enhancement, and long balance time, and achieve good state maintenance effects. High-precision dynamic balance correction to ensure the effect of safe operation
CN110535310AActive Publication Date: 2019-12-03XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2019-12-03

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Abstract

The invention discloses an on-line dynamic balance adjustment system based on a temperature-controlled shape memory alloy and a control method thereof. The system comprises a balance head body. The balance head body comprises a shell. A rotating shaft passes through a through hole in the center of the shell to be fixedly connected with the shell. Four mass blocks are arranged around the through hole in the shell. Each mass block sleeves on an arc-shaped slide bar through an arc-shaped channel arranged on the mass block. Each arc-shaped slide bar is circumferentially distributed around the through hole. The two ends of each arc-shaped slide bar are fixed on the bracket in the shell. The arc-shaped slide bar arranged between the two ends of each mass block and the bracket is sleeved with a spring-shaped shape memory alloy. The spring-shaped shape memory alloy is electrically connected with the rotor part of a conductive slip ring, and the stator part of the conductive slip ring is electrically connected with a power supply device. The bearing support of the rotating shaft is provided with a vibration sensor used for measuring the imbalance amount in all directions during rotation ofthe rotating shaft. The dynamic balance can be realized through the current change, the principle is simple and miniaturization is easy and the system is suitable for high-precision rotor dynamic balance.
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Description

technical field

[0001] The invention relates to the technical field of high-speed dynamic balance of a rotating shaft, in particular to an online dynamic balance adjustment system and control method based on a temperature-controlled shape memory alloy. Background technique

[0002] Rotor unbalance is caused by eccentric mass of rotor parts or defect of rotor parts. More than 70% of the vibration problems of rotating machinery are caused by rotor unbalance. It can be seen that rotor unbalance is an important cause of vibration of rotating machinery. In order to eliminate or reduce the vibration caused by unbalance, it is necessary to balance the rotor.

[0003] Dynamic balance correction is to achieve dynamic balance by changing the mass distribution of the rotor so that its central axis of rotation coincides with the axis of rotation. During the dynamic balancing process, the mass distribution of the rigid rotor is uneven, and the vector sum of each centrifugal force is no...

Claims

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