Output performance test method for stacked piezoelectric ceramic driver

Abstract

The invention relates to an output performance test method for a stacked piezoelectric ceramic driver, and belongs to the field of vibration inhibition of wind tunnel model test. The method is suitable for the driver of a wind tunnel active vibration inhibition pole. According to the method, an output performance test system composed of a measurement control system, a pressure sensor, a foil gauge, a stacked piezoelectric ceramic driver and a computer is used for test. The output performance test system of the stacked piezoelectric ceramic driver is installed on a pedestal, fastening nuts areadjusted according to an experiment requirement so that number of the pressure sensor reaches a predetermined pretightening force value, and the measurement and control system is operated to conduct the experiment. The computer and the measurement control system are used to collect strain and pressure information, and carry out post treatment. The test method is simple, reliable and precise, whenthe experiment condition changes, it is only required to adjust an experimental device simply, and use is convenient and practical.

Description

Technical field [0001] The invention belongs to the field of wind tunnel model test vibration suppression, and relates to a method for testing the performance of a stacked piezoelectric ceramic driver suitable for active vibration suppression struts in a wind tunnel. Background technique [0002] Wind tunnel model test is a very important method in the process of aircraft development and performance testing. Accurate and stable wind tunnel model test data can provide an important basis for the study of aerodynamic characteristics of aircraft. [0003] In wind tunnel tests, tail support is a commonly used model support method, but the model system in the form of tail support is a typical cantilever beam structure, which has low rigidity and is easy to couple with the low-frequency pulsating airflow in the wind tunnel, thereby causing large vibrations of the model . System vibration will make it impossible to accurately measure aerodynamic performance. If the support rod vibrates si...

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Problems solved by technology

[0004] The problem solved by the present invention is that the output performance of the stacked piezoelectric ceramic driver in the active control vibration suppression scheme of the wind tunnel strut is unknown, the pretightening force has an unknown influence on the stacked piezoelectric ceramic driver, and there is no special testing device and fixed In order to solve the problems of testing methods and other issues, a method for testing the output performance of stacked piezoelectric ceramic drivers for active vibration suppression struts in wind tunnels was invented. The electric ceramic driver output performance test system is formed with the computer, and a certain pre-tightening force is applied to the stacked piezoelectric ceramic driver, and the corresponding driving voltage is provided to the stacked piezoelectric ceramic driver, and the strain and pressure information are collected by the computer and the measurement control system. and post-processing

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