基于玻璃基纳米孔拉伸系统的驱动控制与测试研究

发布时间：2018-04-27 12:02

本文选题：纳米孔 + 玻璃管　；参考：《南京航空航天大学》2015年硕士论文

【摘要】：第三代DNA测序仪的基础设备是拥有纳米级通道的纳流体器件。本课题在国家自然科学基金及国家重点基础研究发展计划项目(973计划)支持下,力求制造出基于玻璃毛细管的5nm以下的三维纳通道。而作为近年兴起的一种新概念微特电机,直线超声电机具有结构简单、响应迅速、分辨率高、断电自锁以及无电磁干扰等优点,非常适合作为高精度定位系统中的的运动平台。因此,本文以直线超声电机为精密运动平台,激光器为加热装置,光栅尺位移传感器为平台位移反馈装置搭建了玻璃基纳米孔拉伸系统,探究了玻璃基纳米孔拉伸制造的可行性。针对拉伸系统,本文完成了其控制与测试模块的软硬件设计:以Altera公司的FPGA(型号为EP4CE22E22C8)为核心,采用基于Nios II软核的SOPC技术,将用于电机调速的PWM信号驱动器、处理器、系统外设、光栅编码计数器模块和串口通信模块集成在了FPGA中,并针对拉伸系统编写了相应的控制与测试程序,实现了对拉伸系统中各个装置的控制与观测。驱动控制器设计完成后,本文进行了以下测试与实验:测试了两相PWM驱动信号的频率、相位和占空比对超声电机速度的影响,根据结果比较了各种调速方法的优劣;测试了直线超声电机运动平台的精度,测得的平台最小步距是50nm,平台定位精度可以达到0.5μm,精度测试展现出了超声电机在精密定位系统中的优势;对毛细玻璃管进行了拉伸实验,测试了用于调控激光器的PWM信号的占空比,以及激光加热时间和超声电机加速度对拉伸后玻璃管的内、外径的影响,并成功地拉制出了内径达0.5μm的玻璃管。实验表明,本文设计的基于FPGA的直线超声电机运动平台的驱动控制与测试系统可满足玻璃基纳米孔拉伸系统的驱动控制要求。
[Abstract]:The basic equipment of the third generation DNA sequencer is a nanofluid device with nanoscale channels. This subject, supported by the National Natural Science Foundation and the national key basic research development program (973 Plan), strives to produce a three-dimensional nano channel under the 5nm of glass capillary. The linear ultrasonic motor has the advantages of simple structure, rapid response, high resolution, high resolution, self locking and no electromagnetic interference. It is very suitable to be a moving platform in high precision positioning system. Therefore, this paper uses a linear ultrasonic motor as a precision motion platform, a laser as a heating device, a grating ruler displacement sensor as a platform displacement feedback assembly. The glass based nano hole stretching system was set up to explore the feasibility of drawing the glass based nano holes. In view of the tensile system, the hardware and software design of the control and test module was completed: the FPGA (EP4CE22E22C8) of Altera company was the core, and the SOPC technology based on Nios II soft core was used to use the PWM signal for motor speed regulation. The driver, the processor, the system peripherals, the grating code counter module and the serial communication module are integrated in the FPGA, and the corresponding control and test procedures are written for the drawing system. The control and observation of each device in the drawing system are realized. After the design of the drive controller, the following tests and experiments are carried out in this paper: Test and test The frequency, phase and duty ratio of the two phase PWM drive signal are influenced by the ultrasonic motor speed. According to the results, the advantages and disadvantages of various speed regulating methods are compared. The precision of the motion platform of the linear ultrasonic motor is tested. The minimum platform distance of the platform is 50nm and the positioning accuracy of the platform can reach 0.5 u m. The precision test shows the precision of the ultrasonic motor. The advantage of the bit system; the tensile test of the capillary glass tube was carried out, the duty ratio of the PWM signal used to control the laser was tested, and the effect of the laser heating time and the ultrasonic motor acceleration on the inner and outer diameter of the glass tube after tension was influenced, and the glass tube with the inner diameter of 0.5 mu m was successfully drawn. The experiment shows that the design based on FPGA is based on the experiment. The driving control and testing system of the motion platform of the linear ultrasonic motor can meet the driving control requirements of the glass based nano hole stretching system.

【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ171.6

【参考文献】