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本文详细分析了四盼锁相环的线性性能,给出了一类可以方便实现的四阶环结构,这种四阶环在一系列主要性能方面保持与三阶环大致相同的水平,而在稳态误差指标上较三阶环有十分可观的改善。因此,它特别适宜于在窄带情况下跟踪特大动态参数的目标,亦可适用于使用三阶环的场合,使环路性能得到进一步提高。
In this paper, we analyze the linear performance of quadruped phase-locked loop in detail and give a fourth-order loop structure that can be easily implemented. The fourth-order loop maintains approximately the same level as the third-order loop in a series of key performance, Steady-state error indicators have a considerable improvement over third-order loops. Therefore, it is especially suitable for tracking the target of very large dynamic parameters under narrowband conditions, and can also be applied to the occasion of using third-order loops to further improve the loop performance.