直接由模拟三阶环各部件数字化引出了数字三阶环。用模拟环的分析和设计方法,对一数字三阶环进行了近似地分析和设计。实验和测试结果表明,此数字三阶环稳定可靠,性能良好。 Digitizing the digital third-order loop directly from the components of the simulated third-order loop. With the analog ring analysis and design method, an approximate analysis and design of a digital third-order ring is carried out. Experiments and test results show that the third-order ring of the figure is stable and reliable and has good performance.