A precision ADC sampling system design
A precision ADC sampling system design
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DOI：
10.1007/s41605-020-00168-y
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发表时间：
2020-03
影响因子：
0.6
通讯作者：
Peng Liu;F. Long
中科院分区：
文献类型：
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作者：
Peng Liu;F. Long
简介北京怀柔建成的高能光子源对磁场抖动要求很高。磁场抖动主要由电源输出电流的稳定性决定。为了保证四极磁体电源输出电流的稳定性，需要对电源采样控制环路进行精密设计。本文设计了一种基于内部温度控制的精密ADC采样系统，对采样ADC进行精确控制。材料本设计中采用精密ADC芯片来完成系统的精确采样。精密采样系统包含用于高速设置的DAC系统。方法为了验证系统的设计，采用高精度四极磁体电源进行测量。结论实验结果表明，精密温控ADC系统的温度变化范围为± 0.1°C。通过采用精密温控ADC系统，有效提高了高精度四极磁体电源的输出电流稳定性。
IntroductionThe high-energy photon source, which has been built in Huairou, Beijing, has high requirements on magnetic field dithering. Magnetic field dithering is mainly determined by the stability of the output current of the power supply. In order to ensure the stability of the output current of quadrupole magnet power supply, the power supply sampling control loop needs to be precisely designed. In this paper, a precision ADC sampling system based on internal temperature control is designed to carry out precise control of the sampling ADC.MaterialsIn this design, precise ADC chip is used to complete the precise sampling of the system. The precise sampling system contains a DAC system for high-speed settings.MethodsIn order to verify the design of the system, high-precision quadrupole magnet power supply is used for measurement.ConclusionThe experimental results show that the temperature variation range of precision temperature control ADC system is ± 0.1 °C. By using the precise temperature control ADC system, the output current stability of the high-precision quadrupole magnet power supply is effectively improved.