基于ZYNQ的磁悬浮天平测量系统设计与实现

Design and implementation of magnetic levitation balance measurement system based on ZYNQ

针对磁悬浮天平系统存在设计结构复杂,造价昂贵的局限性同时测量数据漂移,长期测量的精度波动以及依赖于PC端来处理数据的问题,提出了基于ZYNQ的磁悬浮天平测量系统设计,设计运动控制器保证天平高精度定位的稳定性以减小天平托盘位置变化对驱动电流测量的影响,同时设计的小型ZYNQ系统完成AD、DA接口传输数据并在soc中完成数据的处理,回避了传统测量系统依赖PC端处理数据且受到PC端供电电源波动噪声而对测量精度产生的影响等缺点,以及通过修正算法抑制长时间测量所可能产生的数据漂移。实验结果表明:基于ZYNQ的磁浮天平测量系统优化了设计结构且造价低的同时保证了磁悬浮天平测量精度,有效抑制长时间测量带来的噪声和漂移。

Aiming at the limitations of magnetic levitation balance system,such as complex design structure,high cost,measurement data drift,long-term measurement accuracy fluctuation and dependence on PC terminal to process data,a magnetic levitation balance measurement system design based on ZYNQ is proposed.The motion controller is designed to ensure the stability of high-precision positioning of balance to reduce the influence of balance tray position change on driving current measurement.At the same time,the small ZYNQ system is designed to complete data transmission through AD and DA interfaces and data processing in SOC.The disadvantages of the traditional measurement system which depends on PC and is affected by the fluctuation noise of PC power supply are circumvented,and the data drift which may be caused by long-term measurement is suppressed by the modified algorithm.The experimental results demonstrate that the magnetic levitation balance measurement system based on ZYNQ can optimize the design structure and ensure the measurement accuracy of magnetic levitation balance with low cost,and effectively suppress the noise and drift caused by long-term measurement.