兰州冷却储存实验环高可靠性低电平控制系统
High reliability low level RF control system for HIRFL-CSRe
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摘要: 为控制高频加速腔体产生具有稳定的幅度、相位和频率的射频加速电场，设计了实验环高频低电平控制系统。为保证控制的稳定性、可靠性和实时性，系统各功能模块以硬件模拟电路为主体，同时为了协调控制各功能模块的工作并补偿某些功能模块的非线性误差，增加了数字模块。该系统由相位稳定、幅度稳定和频率调谐3个子系统组成，采用高频鉴相、PID控制、DSP和FPGA等技术。目前，控制系统通过了长期稳定性的实验和高功率实验,幅度控制精度±3％，相位控制精度±2°，频率调谐精度±5°。Abstract: In order to get an RF electric field which has stable amplitude, phase and frequency, the radio frequency low level control system for HIRFL-CSRe has been constructed at Institute of Modern Physics. To ensure the control of stability, reliability and real-time, analogous modules are mainly used. At the same time, digital module is used to coordinate the modules and compensate for non-linear error of some function modules. The system is consisted of three subsystems-phase stabilizing system amplitude control system and frequency tuning system, and mainly uses the technology as PID, RF phase detect, DSP, FPGA and so on. Low-level control system of HIRFL-CSRe has been tested through a long-term stability experiments and high-power experiments, the control accuracy meeting the amplitude accura
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Key words:
- cavity model /
- rf phase detect /
- pid /
- phase stabilization /
- dsp /
- field programmable gate array
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