High-voltage Piezoelectric Ceramic Drive Power Supply And Network Design Based On Half-bridge Circuit

As a composite functional material in the field of micro-displacement,piezoelectric ceramics have a wide range of applications in the fields of precise positioning,precise measurement,microbial engineering,aerospace,and military research.Therefore,this article focuses on the application of piezoelectric ceramics in vibration platform test systems.Application,research and design a high-voltage and high-current piezoelectric ceramic drive power supply,through testing the performance indicators of the drive power supply,to meet the design requirements.Through the research and analysis of the characteristics of piezoelectric ceramics,the article understands the origin of piezoelectric ceramics and related application principles,and analyzes its driving principles.At the same time,some related characteristics of piezoelectric ceramics are listed.By studying the design of piezoelectric ceramic drive power,we have learned about two major types of piezoelectric ceramic drive power.Through the research on relevant piezoelectric ceramic drive power supplies at home and abroad,it is understood that there is a gap in the performance indicators of piezoelectric ceramic drive power supplies in the domestic market compared with piezoelectric ceramic drive power supplies in foreign markets.By analyzing the different driving methods of piezoelectric ceramics,in view of the actual needs of this subject and the performance parameters of the selected P-035.80 P piezoelectric ceramics in the article,the switch-type driving method is selected as the design plan for this subject.The overall design structure of the piezoelectric ceramic drive power supply is given in the article,and each part of the piezoelectric ceramic drive power supply circuit is analyzed.In order to meet the design requirements,a half-bridge circuit is chosen as the main drive circuit.In order to meet the requirements of random signal testing,high-voltage and highcurrent output and related data acquisition in practice,a four-way half-bridge circuit in parallel is finally adopted,and the overall design plan is analyzed and researched.The drive power supply mainly includes four parts in the hardware circuit: the core control unit circuit,the data acquisition circuit,the drive circuit,and the communication module.The core control circuit mainly uses the microcontroller to read and send data and control the main drive circuit;the data acquisition circuit mainly collects related data such as the small signal generator,output voltage and current;the drive circuit is designed in this article The core is mainly to convert the drive signal of the microcontroller into the actual power drive signal;the communication module mainly connects the piezoelectric ceramic drive power to the bus network,uploads the system status data,and monitors it through the PC.The design of the drive power software program in this paper is mainly divided into the hardware circuit lower computer control software program and the PC end upper computer software.The software program design of the lower computer mainly analyzes and studies the clock configuration of the microcontroller and the communication protocol of the related hardware.The upper computer software design mainly analyzes the main framework and design patterns of the application,and introduces related functions.Through the research of the above theoretical schemes,relevant experimental verifications have been carried out.The experiments show that the piezoelectric ceramic drive power in this article has good performance in terms of voltage output linearity,stability,current output stability,frequency response and other indicators.It meets the requirements of output voltage0-900 V,output current above 6A,and frequency response range of 5Hz-2000 Hz under the condition of simulating 5u F load.At the same time,it meets the design requirements under real load test.