Hysteresis current control and drive of IGBT are key sections of the study, and their performances will directly decide the efficiency of tracing the standard waveform.
滞回控制环节与IGBT的驱动环节是本文中的核心部分，它们的工作状况将直接影响到本装置以何种效率追踪标准波形。
Through circuit resonance, dielectric barrier discharge power supply outputs a high frequency and high voltage of sine waveform to produce dielectric barrier discharge. Through DC input voltage regulation and circuit resonant frequency tracing, approximate linear load power regulation can be realized by the power supply.
利用电路谐振产生高频高幅值的正弦波电压的介质阻挡放电电源，通过调整电源的逆变电路的直流输入电压，同时逆变电路开关频率跟踪电路谐振频率，可以实现介质阻挡放电负载功率的近似线性调整。
And this causes a frequency change Δf. The resonant point tracing algorithm describes how to detect Δf. So it can introduce a feedback frequencydifference -Δf through a closed loop to realize the resonant state o In the digitaldetection scenario, using staircase wave to replace saw tooth wave, it can overcome a lot of shortcomings in the analog system. The character of the staircase wave affects the detection precision directly. This thesis analyzes a high precision scenario producing a staircase waveform in detail. It can reduce the number of the bits in D/A converter greatly. This thesis proposes another method to improve the detection precision in case that the A/D converter has comparatively little number of bits, while this method will not increase the cost of the system greatly.
在谐振式光纤陀螺中，环形谐振腔的旋转使得谐振腔的谐振频率发生了变化，从而产生了一个与旋转速度成正比的频率变化值△f，谐振点跟踪算法描述了如何检测出△f，从而可以通过闭环在系统中引入反馈频差-△f，实现光路的谐振状态；在数字闭环检测方案中，用阶梯波作为反馈信号来代替锯齿波，可以克服原来模拟系统中锯齿波的很多缺点，阶梯波的性能直接影响着系统的测量精度，本论文详细分析了一种高精度阶梯波生成方案，使得所需D／A的位数大大降低；本文还分析了A／D转换器对系统测量精度的影响，提出了一种A／D转换器位数较少的情况下提高系统测量精度的措施，同时又不会增加太多的系统成本。
By the aid of travel time and waveform data of trapped waves, and body waves, and using spectrum analysis and ray-tracing method can further determine the 3-D geometric shape and physical parameters of faults.
借助于围陷波和体波的走时及波形资料，利用谱分析和射线追踪方法可进一步确定断层的三维几何形态和物性参数。