A detection device and calculation method for hysteresis characteristics of piezoelectric ceramics under DC voltage
A technology of piezoelectric ceramics and DC voltage, applied in the field of measurement, can solve problems that cannot meet the requirements of piezoelectric ceramics applications
Active Publication Date: 2020-06-09
JIANGSU UNIV
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Therefore, the calculation of this formula cannot satisfy the application of piezoelectric ceramics in drivers.
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[0041] Wires were welded on the front and back of the piezoelectric ceramic sample 1 that had sintered silver electrodes. Fix the piezoelectric ceramic with welded wires on the base. Note that the positive side is facing up. Fix the sensor on the base with the magnetic base. Connect the sensor interface to the relevant channel of the digital display tester, connect the DC drive power supply, and debug the device. Adjust the resolution of the DC drive power supply to 10v, and the resolution of the digital display tester to 0.01μm. Place the debugged device in a relatively quiet room, and start testing data after the sensor is stable. Manually adjust the voltage, gradually increase the voltage from 0V-1800V, and record a displacement data every 100V; the obtained data is filled in the position corresponding to the boost displacement of the implementation example in Table 1. Reduce the voltage gradually from 1800V-0V, and record a displacement data every 100V. The obtained d...
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The invention discloses a device for detecting the hysteresis characteristics of a piezoelectric ceramic under DC voltage and a method for calculating the hysteresis characteristics of a piezoelectricceramic under DC voltage, and relates to the technical field of measurement. The detecting device comprises a digital display micrometer, a sensor, a DC driving power source and a base. The piezoelectric ceramic and the sensor are fixed to the base. A sensor interface is connected to the digital display micrometer. The positive and negative poles of the DC driving power source are connected withwires on the upper end surface of the piezoelectric ceramic. The calculating method comprises a step 1) of soldering wires to the front and back surfaces of the piezoelectric ceramic where a silver electrode has been sintered; a step 2) of fixing the piezoelectric ceramics to which the wires has been soldered in the step 1) to the base, and enabling the positive pole to face upward; a step 3) of connecting the sensor interface to the channel of the digital display micrometer; a step 4) of connecting the DC driving power source and debugging the detecting device; a step 5) of placing the debugged detecting device in a quiet room; and a step 6) of calculating the maximum hysteresis error and the instantaneous error by using a formula of the present invention in order to provide a reliable numerical basis for applying the piezoelectric ceramic to a driver.
Description
technical field [0001] The invention relates to the field of measurement technology, in particular to a detection device and a calculation method for hysteresis characteristics of piezoelectric ceramics under DC voltage. Background technique [0002] The micro-displacement driving device is an important aspect of the piezoelectric ceramic application, and the hysteresis characteristic has always been an important factor affecting the accuracy of the piezoelectric ceramic driver. The hysteresis characteristic means that the output of piezoelectric ceramics lags behind its input. On the voltage-displacement curve, its main manifestation is that there is a difference between the displacements on the falling curve and the rising curve under the same voltage value, and the size of the difference Response hysteresis characteristic performance. [0003] Most material preparation researchers use a ferroelectric tester to test the S-E curve to obtain the S-E butterfly strain curve. ...
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IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 张幼明王树林陈彩凤薛振宇
Owner JIANGSU UNIV