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Piezoelectric ceramic driving device

A piezoelectric ceramic drive, piezoelectric ceramic technology, applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve problems such as environmental noise impact, and achieve cost reduction , Improve the output displacement resolution, improve the effect of positioning resolution

Inactive Publication Date: 2015-01-28
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003] The present invention provides a piezoelectric ceramic drive device to solve the problem that the existing piezoelectric ceramic drive technology is easily affected by environmental noise

Method used

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  • Piezoelectric ceramic driving device
  • Piezoelectric ceramic driving device

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specific Embodiment approach 1

[0014] Specific implementation mode 1. Combination Figure 1 to Figure 5 Describe this embodiment, the piezoelectric ceramic driving device includes a digital-to-analog converter 4, a voltage amplifier 7 and a differential driver 11; wherein the analog signal output terminal 5 of the digital-to-analog converter is connected to the signal input terminal 6 of the voltage amplifier, and the voltage amplifier's The signal output terminal 8 is connected to the signal input terminal 9 of the differential driver, and the signal output terminal 10 of the differential driver is connected to the piezoelectric ceramic 12; the digital signal becomes an analog voltage signal after being converted by the digital-to-analog converter 4; the analog voltage signal is passed through the voltage amplifier 7 is amplified and transmitted to the differential driver 11; the differential driver 11 applies the voltage to both ends of the piezoelectric ceramic 12.

[0015] This embodiment also includes ...

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Abstract

The invention provides a piezoelectric ceramic driving method and device and relates to the technical field of precise displacement control. The problem that an existing piezoelectric ceramic driving method and device is easily interfered by environmental noise and accordingly positioning resolution ratio is low and cost is high is solved. The piezoelectric ceramic driving device comprises a controller, a digital-to-analogue converter, a voltage amplifier and a differential driver, wherein the digital-to-analogue converter receives a digital signal of the controller and then converts the digital signal into an analogue voltage signal, and the analogue voltage signal is amplified by the voltage amplifier and then is exerted onto piezoelectric ceramic through the differential driver. The piezoelectric ceramic driving method and device can effectively improve the resistance capacity of a driving signal to the environmental noise and improve the positioning resolution ratio of the piezoelectric ceramic and is low in cost.

Description

technical field [0001] The invention relates to the technical field of dense displacement control, in particular to a driving method and device for piezoelectric ceramics. Background technique [0002] Piezoelectric ceramic materials have the advantages of high resolution, good frequency characteristics, large output force, no magnetic interference, and low heat generation. As the actuator of nanoscale positioning systems, they are widely used in aerospace, semiconductor, bioengineering, and precision testing. and precision machining. In nanometer-level high-precision positioning applications, its actuators are usually required to have sub-nanometer positioning resolution. The elongation of the piezoelectric ceramic material is proportional to its driving voltage, so the driving voltage resolution of the piezoelectric ceramic driving circuit determines the positioning resolution of the piezoelectric ceramic actuator. Usually, the piezoceramic driving circuit is a single-en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/06
Inventor 王学亮李佩玥张巍隋永新杨怀江
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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