Sopc Technology-based Microfluidic Digital Miniaturization Of Drive Control System Developed

The driving control system is the important equipment system in the applications of Digitalization of Microfluidic technology. With the development of Digitalization of Microfluidic technology, new requirements for the special driving control system were proposed: miniaturization, stability improvement, independence and other aspects.The dissertation verified the relationship between the pulse jump signals and the effects of micro-injection based on the analysis of the phenomenon in experiments. And it proposed the special design requirements of piezoelectric driving control system, which were applied for Digitalization of Microfluidic technology by above conclusions. The design scheme which could realize the miniaturization, independence from PC, high stability, easy to upgrade for piezoelectric driving control system was laid out. And the special signal synthesis plan based on the AWG technology and applied for Digitalization of Microfluidic technology was given.Based on FPGA and SOPC technologies, the paper described the design process of hardware schemes and PCB, the SOPC modules which used the Nios II as soft core MCU, and the control system software which used the round-robin structure as the framework for the embedded signal controller. The circuit of the signal controller was fabricated and debugged successfully. Meanwhile, the design process of power amplifier for piezoelectric driving control, which was based on the integrated amplifier chip PA93, was presented by the scheme tests and improvements.The test results showed that the system could meet the design requirements in functional realization and performance parameters. The application experiments proved that the system could satisfy the actual driving control requirements and perform well.Last but not least, integrated with the miniaturization feature of the driving control system and based on the Digitalization of Microfluidic technology, the micro propulsion experimental system for the attitude regulation of microsatellite was designed. The experimental data showed that the micro propulsion experimental system could generate the micro thrust impulse in nano-Newton·sec order. It offered a new way for the attitude control of the microsatellite in high precision.