Whirling vibration excitation and dynamic measurement device

A technology of dynamic measurement and vibration excitation, which is applied to measuring devices, vibration testing, and testing of machine/structural components. It can solve problems such as high cost, poor anti-vibration performance, and complex system structure, and achieve convenient operation and small temperature drift. , the effect of high measurement accuracy

Inactive Publication Date: 2013-09-25
BEIHANG UNIV
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  • Description
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Problems solved by technology

This kind of sensor is an acceleration sensor with its own power amplifier or voltage amplifier. It has an amplifier and a constant current source. Poor performance and other disadvantages, as well as the complex structure of the system, poor anti-vibration performance, and high cost in the laser Doppler method

Method used

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  • Whirling vibration excitation and dynamic measurement device
  • Whirling vibration excitation and dynamic measurement device
  • Whirling vibration excitation and dynamic measurement device

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Embodiment Construction

[0030] The present invention has designed a kind of rotary vibration excitation and dynamic measurement device, and the detailed description in conjunction with each accompanying drawing and embodiment is as follows:

[0031] The principle block diagram of a kind of rotating vibration excitation and dynamic measuring device of the present invention is as follows: figure 1 As shown, it mainly includes signal source, vibration signal excitation, dynamic acquisition and transmission of vibration signal, and power drive of rotating mechanism. Aiming at the rotating vibration excitation and acceleration signal detection of the rotating mechanism, the present invention matches the vibrator and the rotating mechanism so as to realize the coaxial rotation of the motor to the two. The excitation signal of the FPGA’s custom signal) is driven by the power amplifier and then the vibration exciter is controlled by means of a slip ring, which can apply vibration excitations with different e...

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Abstract

The invention relates to a whirling vibration excitation and dynamic measurement device mainly comprising a signal source part, a vibration signal excitation part, a vibration signal dynamic collection and transmission part, and a power drive part of a whirling mechanism. For realizing vibration excitation and signal detection of the whirling mechanism (such as a round rod and a pipe), vibration excitation with different waveforms and excitation intensities is exerted on the whirling mechanism at different rotation speeds by utilizing matching connection and coaxial rotation of a vibration exciter and the whirling mechanism, and a wired or wireless transmission mode is adopted to realize signal collection and transmission of a multichannel vibration acceleration signal to be convenient for subsequent signal analyzing and processing. The whirling vibration excitation and dynamic measurement device can work under the condition that the whirling mechanism stalls or rotates to be convenient for being in connection with a signal generator or a signal generating device designed by a user to realize the vibration excitation and detection of a complex signal, can be used for theoretical characteristics and experimental study of mechanical vibration signal measurement, vibration characteristic analysis, low-frequency acoustic data transmission and the like and is simple in structure and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of vibration measurement, and specifically relates to a rotational vibration excitation and dynamic measurement device, which is used to realize vibration signal excitation, collection and transmission of rotating mechanisms (such as round rods, round pipes, etc.), and can be widely used in machinery Vibration signal measurement, vibration characteristic analysis, low-frequency acoustic data transmission and other theoretical characteristics and experimental research. Background technique [0002] With the development of science and technology, rotating machinery has become a common key equipment in all walks of life, and is an important device widely used in my country's national economy and national defense. In the practice of engineering production, the working status of rotating machinery can be obtained through vibration information or artificial vibration excitation. In particular, for the shafting ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
Inventor 李成刘钊樊尚春
Owner BEIHANG UNIV
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