预报误差法在伺服系统时域辨识中的应用与实现

The Application and Implemention of the Recursive Prediction Error Method Used in Identification of Servo System in Time Domain

介绍了系统辨识中的预报误差法的基本原理,设计了一种简洁通用的软硬件辨识平台。成功地应用预报误差的辨识方法对一个实际的中功率雷达伺服系统实现了时域辨识,得到了该伺服系统比较准确的模型。将辨识结果与一般最小二乘法的辨识结果进行了比较,发现此辨识方法在抑制噪声方面有很大的改进。

The recursive prediction error method in system identification is introduced in this paper. All the software and hardware of the system has been designed as a servo-system. A real medium radar servo-system is identified in time domain with the recursive prediction error method, an exact model of the servo system is achieved. Comparing with the least square method, this method is useful to inhibit noises.