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Permanent calibration method in soft bearing dynamic unbalance test of rigid rotor

A dynamic unbalanced, rigid rotor technology, used in static/dynamic balance testing, machine/structural component testing, measuring devices, etc., can solve problems such as inability to achieve calibration results

Inactive Publication Date: 2011-09-07
SHANGHAI JIAO TONG UNIV
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  • Application Information

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Problems solved by technology

[0006] Professors Pan Shuangxia and Yang Keji of Zhejiang University have elaborated on the plane separation and system calibration of dynamic unbalance measurement in "Research on System Error Analysis and Calibration Method of Dynamic Balancing Machine". For the soft bearing system, the influence coefficient method and the vector influence coefficient System calibration using the linear regression least squares influence coefficient method, these are improved methods based on the state calibration, and cannot achieve the calibration effect similar to the permanent calibration in the hard support system

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  • Permanent calibration method in soft bearing dynamic unbalance test of rigid rotor
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  • Permanent calibration method in soft bearing dynamic unbalance test of rigid rotor

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Embodiment Construction

[0024] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0025] like image 3 As shown, this embodiment includes the following steps:

[0026] In the first step, in order to obtain the parameters of the rotor acceleration process more delicately, the balancing machine uses a servo motor with preset speed and acceleration functions to drive the rotor, and the support is started only when the rotor reaches the resonance state (maximum amplitude) to the greatest extent. The locking device of the pendulum system releases the locking device supporting the pendulum immediately after passing the resonance frequency point.

[0027] In the second step, during the acceleration p...

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Abstract

The invention discloses a permanent calibration method in soft bearing dynamic unbalance test of a rigid rotor, belonging to the technical field of mechanical measurement. The method can realize permanent system calibration on a soft bearing dynamic unbalance machine and is characterized in that inherent frequency of a vibrating system consisting of a support system and a detected rotor is calculated by acquiring rotary frequencies and amplitudes of the support system at the corresponding moments in the process of rotor acceleration, thereby characterizing the influence of the quality of the rotor on the vibrating amplitude of the rotor by mapping. The influence of the quality and the rotating speed (inertia force of the rotor) of the rotor on calibration is eliminated. The permanent system calibration on the soft bearing dynamic balance machine is realized.

Description

technical field [0001] The invention relates to a method in the technical field of mechanical measurement, in particular to a permanent calibration method in the dynamic unbalance test of a soft bearing of a rigid rotor. Background technique [0002] The existing calibration of the soft bearing dynamic unbalance test system is mainly carried out using the influence coefficient method, and the calibration results are only applicable to the dynamic balance test with the same structural parameters and operating speed of the current rotor. If the rotor type or rotor structure during the dynamic unbalance test is inconsistent with the rotor type or rotor structure during calibration, the calibration result of the system is not applicable, that is, it does not have permanent calibration characteristics. [0003] Professor Zhou Shiyan of Beihang University clearly pointed out in his paper "A New Way to Solve the Problem of the Influence of Left and Right Correction Surfaces of Rigi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/16
Inventor 蔡萍赵鼎鼎齐伟胡文涛
Owner SHANGHAI JIAO TONG UNIV
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