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Sensor-actuator based on direct and inverse piezoelectric effects

A technology of inverse piezoelectric effect and piezoelectric actuator, which is applied in the field of measurement and control and sensing, can solve the problem of poor force direction accuracy, and achieve the effect of stable performance, reliability and high stability.

Active Publication Date: 2019-11-08
DALIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem addressed by the present invention is: when the vibrator is used as the force generating device, the direction accuracy of the force generated by it is poor

Method used

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  • Sensor-actuator based on direct and inverse piezoelectric effects
  • Sensor-actuator based on direct and inverse piezoelectric effects
  • Sensor-actuator based on direct and inverse piezoelectric effects

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Embodiment Construction

[0031] The specific implementation manners of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0032] Sensing actuator based on positive and reverse piezoelectric effects, including actuator back cover 1, piezoelectric actuator 2, intermediate shaft 3, piezoelectric sensor 4, inner sleeve 5, sensor back cover 6, loading base plate 7, connecting bolts 8. Screw plug 9 and loading base 10;

[0033] The actuator rear cover 1 is an integral two-stage stepped shaft structure, the shaft on the side with the smaller diameter is a solid optical shaft, and its head is a hemispherical structure, which is connected to the optical hole on the loading base 10 The shaft hole fits to achieve the purpose of guiding; the shaft on the larger diameter side is a hollow shaft, and there is a concentric threaded hole inside. This threaded hole is threaded with the threaded shaft of the inner sleeve 5, and the actuator back...

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Abstract

The invention belongs to the field of sensing and measurement and control technologies and provides a sensor-actuator based on direct and inverse piezoelectric effects. According to the sensor-actuator, by combining a piezoelectric actuator and a piezoelectric sensor, the requirement for generating a one-dimensional force with a controllable magnitude, direction and acting point is met, and the sensor-actuator has great significance for improving the result precision of a whole calibration experiment. The device is composed of the piezoelectric actuator, the piezoelectric sensor, a loading base, a loading bottom plate, an inner sleeve, an intermediate shaft, etc. The device is compact in structural design, reliable in working principle and extremely high in adaptability, is a force generation device with high precision and expands the design thought of a force generation and detection device.

Description

technical field [0001] The invention belongs to the technical field of sensing and measurement and control, and relates to a one-dimensional force generation and synchronous detection device. A piezoelectric actuator and a piezoelectric sensor are used, the actuator acts as a force generating device, and the sensor acts as a synchronous force detecting device. It solves the problem that the force value accuracy, direction accuracy and action point accuracy that are common in one-dimensional force generating devices are difficult to guarantee. It is of great significance in the static and dynamic ground force loading simulation experiments in the fields of aerospace, national defense and military industry. Background technique [0002] In the new era, due to the increasing demand for spacecraft functions, higher and higher execution precision requirements, and the continuous addition of new applications such as laser communication and high-precision imaging, when designing sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L1/16
CPCG01L1/16
Inventor 任宗金赵毅张军姜明岩赵凯李洋
Owner DALIAN UNIV OF TECH
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