兰州重离子加速器控制系统DSP组件设计

Design of digital signal processing components platform in control system for Heavy Ion Research Facility in Lanzhou

针对重离子加速器部分电源的控制要求,进行了分析研究,提出并实现了一种实时、高效、多功能的控制系统。该系统基于数字信号处理器(DSP)和两片现场可编程门阵列(FPGA)芯片相结合的核心处理构架,在系统后端利用PXI总线接口配合FPGA来与工控机箱中的系统控制器和其他控制组件进行大批量数据交互;系统前端利用直接数字频率合成器、模数转换器和数模转换器等器件结合DSP和FPGA中的控制算法及相应控制机制来实现对不同电源控制参数的处理和功率的输出;平台中两组光纤模块也与FPGA相配合实现对同步触发事例等实时数据的收发和调试。

The requirements of part of power supply control systems for the heavy ion accelerator were analyzed, and a realtime, efficient, multi-function control system was proposed and achieved. The key processing architecture of this system is based on a combination of a digital signal processor （DSP） and two field programmable gate array （FPGA） chips. The back-end of the system exchanges data with the system controller and other components in the industrial control chassis by the PXI bus interface and the FPGA. The front-end of the system can process control parameters of different power supplies and output the power through the direct digital synthesizer, analog to digital converter, digital to analog converter, and the control algorithm and mechanism realized in the DSP and FPGA. The two groups of fiber optical modules corresponding with the front-end FPGA can achieve the receiving and sending efficiently for the real-time data like synchronous event signal and the debugging of the platform.