Performance of a high-precision digital tuning algorithm

[1991] Proceedings of the 34th Midwest Symposium on Circuits and Systems Pub Date : 1991-05-14 DOI:10.1109/MWSCAS.1991.252170

C. Yu, W. Bliss, R. Geiger

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引用次数: 1

Abstract

An iterative digital tuning algorithm has been reviewed and simulated extensively, and its functionality has been investigated experimentally. This tuning algorithm is applicable to digitally programmable continuous-time filters. The algorithm estimates filter characterization parameters based on a system identification method and calculates control parameters for tuning adjustments. Extensive simulations show that this algorithm converges to a solution within 10 iterations in most cases, even in the presence of various measurement errors, parameter variations, and overordering effects. This algorithm is very insensitive to initial parameter variations, as good results are obtained even with 30% parameter error. This algorithm also attains good speed and accuracy in the presence of 5% measurement errors and high overordering effects. Experimental results with a second-order monolithic programmable OTA-C (operational transconductance amplifier and capacitor) integrated circuit filter verify the robustness of the algorithm in tuning continuous-time filters.<>

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一种高精度数字调谐算法的性能

本文对一种迭代数字调谐算法进行了综述和仿真，并对其功能进行了实验研究。该算法适用于数字可编程连续时间滤波器。该算法基于系统辨识方法估计滤波器表征参数，并计算调谐调整的控制参数。大量的仿真表明，在大多数情况下，即使存在各种测量误差、参数变化和过序效应，该算法也能在10次迭代内收敛到一个解决方案。该算法对初始参数变化不敏感，在参数误差为30%的情况下也能获得较好的结果。该算法在5%的测量误差和高过序效应的情况下，也取得了良好的速度和精度。在二阶单片可编程OTA-C(运算跨导放大器和电容)集成电路滤波器上的实验结果验证了该算法在调谐连续时间滤波器方面的鲁棒性

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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[1991] Proceedings of the 34th Midwest Symposium on Circuits and Systems

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