压杆测压系统的快速补偿技术

发布时间：2018-06-05 13:36

本文选题：压杆 + 测量　；参考：《中国测试》2016年10期

【摘要】：该文针对长距离压杆测压系统的频谱带宽不足问题,在常规电缆补偿技术的基础上,提出一种系统整体补偿方法。设计相应的补偿电路,利用Multisim电路仿真软件进行辅助设计和优化,同时利用扫频方法和阶跃响应方法估算系统的带宽,通过现场测试,补偿后测试系统的带宽达到约600 k Hz,输出信号幅值为原系统的1/2,满足压杆测压系统的带宽需求。制作相应的补偿器,测试得到补偿前后系统的幅频曲线和阶跃响应曲线,两种曲线均证明补偿后系统的带宽优于补偿前系统带宽,说明系统整体补偿方法的有效性,为现场测试系统的频谱快速补偿提供参考。
[Abstract]:In order to solve the problem of the shortage of spectrum bandwidth of the long distance pressure-bar pressure measuring system, this paper presents a method of system integral compensation based on the conventional cable compensation technology. The corresponding compensation circuit is designed, and the Multisim circuit simulation software is used to aid the design and optimization. At the same time, the frequency sweep method and the step response method are used to estimate the bandwidth of the system. The bandwidth of the test system after compensation is about 600 kHz, and the output signal amplitude is 1 / 2 of that of the original system, which satisfies the bandwidth requirement of the pressure-bar pressure measurement system. The amplitude-frequency curve and step response curve of the system before and after compensation are obtained by making the corresponding compensator. Both curves prove that the bandwidth of the compensated system is superior to that of the system before and after compensation, which shows the effectiveness of the overall compensation method of the system. This paper provides a reference for the fast compensation of the frequency spectrum of the field test system.
【作者单位】：西北核技术研究所;
【分类号】：O384

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