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Device for actively measuring maximum output force of piezoelectric ceramics

A technology of piezoelectric ceramics and measuring devices, applied in measuring devices, force/torque/work measuring instruments, instruments, etc., can solve the problem of inability to accurately calibrate the force output value at different displacement outputs and the inability to realize the displacement output of piezoelectric ceramics Zero, unable to achieve the force output value when measuring different displacement output, etc., to achieve clear results, accurate measurement, and direct measurement results

Active Publication Date: 2017-02-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the limitation of the existing maximum output force measurement method of the piezoelectric ceramics, the displacement output of the piezoelectric ceramics cannot be zero when the force is output, the force output values ​​of different displacement outputs cannot be measured, and the different displacement outputs cannot be accurately calibrated. The force output value during displacement output relies on Hooke's law to calculate the Coulomb force on charged particles in the electric field, and proposes an active piezoelectric ceramic maximum output force measurement device

Method used

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  • Device for actively measuring maximum output force of piezoelectric ceramics
  • Device for actively measuring maximum output force of piezoelectric ceramics
  • Device for actively measuring maximum output force of piezoelectric ceramics

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specific Embodiment approach 1

[0023] Specific implementation mode one: combine Figure 1 ~ Figure 4 Describe this embodiment, this embodiment includes macro adjustment component A, micro displacement drive component B, force measurement component C and displacement measurement component D;

[0024] The macro-adjustment part A includes a pre-tightening bolt 1, an adjustment frame 2, two locking bolts 4, two connecting bolts 9 and two positioning screws 13, and the micro-displacement driving part B includes a driving frame 3, a driving ceramic 5, a first preset The tight wedge 14, the second pre-tightening wedge 15 and the wedge locking bolt 16, the force measurement part C includes a measurement support platform 7 and a force sensor 8, and the displacement measurement part D includes a displacement sensor 11 and a reflector 12;

[0025] The center of the upper horizontal frame of the adjustment frame 2 is provided with an adjustment screw hole 2-1. The left mullion of the adjustment frame 2 is provided with...

specific Embodiment approach 2

[0031] Specific implementation mode two: combination figure 1 and image 3 The present embodiment will be described. The second pre-tightening wedge 15 and the first pre-tightening wedge 14 in this embodiment are arranged upside down. That is, the wedge-shaped narrow side of the second pre-tightening wedge 15 is positioned at one side of the wedge-shaped wide side of the first pre-tightening wedge 14 , and the wedge-shaped wide side of the second pre-tightening wedge 15 is positioned at the wedge-shaped narrow side of the first pre-tightening wedge 14 side. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0032] Specific implementation mode three: combination image 3 and Figure 4 To illustrate this embodiment, the lower end surface of the driving frame 3 of this embodiment is provided with two grooves 3-6, and the two grooves 3-6 are symmetrically arranged on both sides of the protrusion 3-3, and one end of the reflection sheet 12 is located at The lower end surface of the drive frame 3, the other end of the reflector 12 is located at the groove 3-6. Other components and connections are the same as those in the second embodiment.

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Abstract

The invention discloses a device for actively measuring the maximum output force of piezoelectric ceramics, so as to solve a problem that a conventional method for measuring the maximum output force of piezoelectric ceramics cannot achieve a purpose that the displacement output is zero during the force output of the piezoelectric ceramics. A pre-tightening bolt is in threaded connection with an adjustment screw hole. A second pre-tightening wedge block, a first pre-tightening wedge block and drive ceramic are sequentially disposed in a vertical hole from the top to the bottom. The drive frame is disposed in an adjustment frame, and is located at the front end of the connection plate. The locking bolt is in threaded connection with a locking threaded hole, and a force sensor is disposed on the bottom surface in the adjustment frame. A measuring supporting platform is disposed on the force sensor, and is in threaded connection with the force sensor. The displacement sensor is disposed on the measuring supporting platform. A reflection piece is pasted under the drive frame, and the adjustment frame is fixedly disposed on an installation platform through a connection bolt. The device can detect the relation between an excitation voltage and force output during zero displacement output and the relation between displacement output and force output under the same voltage, and is used for describing the force output characteristics of piezoelectric ceramics.

Description

technical field [0001] The invention relates to a measuring device for output force of piezoelectric ceramics, in particular to an active measuring device for maximum output force of piezoelectric ceramics. Background technique [0002] As a high-efficiency transducer material with piezoelectric effect, piezoelectric ceramics have the advantages of simple manufacture, low cost, and high work efficiency. They are usually used as sensitive elements to make high-precision sensors, or as driving elements to be packaged into A variety of micro-drive platforms. It is used in laser gyro, ultrasonic motor, underwater acoustic communication, related to aerospace, biotechnology, underwater acoustic communication, etc. [0003] In the study of piezoelectric ceramics, the voltage-displacement output curve and voltage-force output curve are important data to describe the characteristics of piezoelectric ceramics. It is very convenient to measure the maximum displacement output of piezo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/00
CPCG01L5/00
Inventor 荣伟彬裴智超张廷宇王乐锋孙立宁
Owner HARBIN INST OF TECH