Active vibration isolation system for actuator test bench based on piezoelectric ceramics

A piezoelectric ceramic and active vibration isolation technology, which is used in the testing of mechanical components, testing of machine/structural components, instruments, etc., can solve the problems of single control frequency, unsatisfactory, small output force, etc.

Inactive Publication Date: 2018-06-22
CSSC SYST ENG RES INST
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Problems solved by technology

[0030] Aiming at the shortcomings of the existing active vibration isolation actuator control mechanism, such as small output force, single control frequency, inability to satisfy low frequency, and multi-line spectrum control, the present invention proposes an active vibration isolation system for actuator test benches based on piezoelectric ceramics

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  • Active vibration isolation system for actuator test bench based on piezoelectric ceramics
  • Active vibration isolation system for actuator test bench based on piezoelectric ceramics
  • Active vibration isolation system for actuator test bench based on piezoelectric ceramics

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Embodiment Construction

[0041] Specific embodiments of the present invention will be discussed in detail below in conjunction with the accompanying drawings.

[0042] The present invention is an active vibration isolation system applied to the ship vibration active vibration isolation actuator test platform, which meets the high-precision vibration isolation requirements of the low frequency (20Hz-200Hz) of the actuator measurement platform (the line spectrum reduction is greater than 15dB).

[0043] image 3 The control scheme of the active vibration isolation system is given. For the vibration signal collected by the feedback sensor, the frequency of the vibration signal that needs to be reduced is obtained through online frequency estimation, and the corresponding reference signal is generated through the sine generator. The feedback sensor installed on the controlled object detects the vibration signal, that is, the error signal. After being conditioned by the signal conditioner, it is input to...

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Abstract

The invention proposes an active vibration isolation system for an actuator test bench based on piezoelectric ceramics, and the system is used for the actuator test bench, and can effectively preventsvarious types of external vibration line spectrums from affecting a measurement result. The system comprises a piezoelectric ceramic actuator, a driver, a feedback sensor, a signal conditioner, and acontroller. The output force of the system is greater than 4000N through employing the piezoelectric ceramic actuator, and the displacement is small, so the system meets the control demands of smalldisplacement of an actuator measurement platform and the 4000N output force of the actuator. The system can be used for eliminating the external interference of more than eight line spectrums (20Hz-200Hz). The line spectrum vibration effect is greater than 15dB, and the precision can meet the requirement of the product quality verification of an electromagnetic actuator of an active vibration isolation device.

Description

technical field [0001] The invention belongs to the field of active vibration isolation, and in particular relates to an active vibration isolation system for an actuator test bench based on piezoelectric ceramics. Background technique [0002] The performance test of the output force of the electromagnetic actuator, one of the important components of the active vibration isolation device, is one of the basic research contents of the active control technology of ships. In order to ensure the accuracy of the performance test of the output force of the actuator, it is necessary to develop an The active vibration isolation system of the actuator measurement platform is used to remove the interference of the external vibration line spectrum on the measurement results. [0003] Currently, no active vibration isolation system is used in existing actuator test benches. However, the usual active vibration isolation system based on piezoelectric actuator is in the stage of theoretic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00G01D11/10
CPCG01D11/10G01M13/00
Inventor 梁子冀卢立勤喻浩游上钦师于杰
Owner CSSC SYST ENG RES INST
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