On System Identification of a System with Integrators
On System Identification of a System with Integrators
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具有积分器的系统的系统辨识
DOI：
10.9746/sicetr.50.342
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
S. Adachi
中科院分区：
文献类型：
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作者：
Y. Takeshita;Takahiro Kawaguchi;S. Adachi
众所周知，通过系统辨识fi方法获得准确的参数估计，对测量的输入输出数据进行预处理是非常重要的。本文研究了具有积分器的线性时不变系统，这些系统出现在各种工程fi领域，例如具有刚体运动和直流伺服电机的物理系统。然而，由于系统是不稳定的、非稳定的系统，将其等同于积分器是一种ffi崇拜。本文的目的是为具有积分器的系统提出一种合适的前处理方法和识别fi正离子过程。首先，提出了对这类系统的输入输出数据进行预处理，以消除低频干扰。其次，针对这类系统提出了一种新的身份识别(identifi)方法，对输入数据采用积分器。最后，通过数值算例验证了所提方法的ff有效性。
It is well-known that preprocessing of the measured input-output data is very important to obtain accurate parameter estimates by system identification methods. This paper treats LTI (linear time-invariant) systems with integrators that appear in various engineering fields, for example, a physical system with rigid body motion and DC servo motors. However, it is known that it is difficult to identify the systems with integrators because they are unstable and astatic system. The purpose of this paper is to propose an appropriate preprocessing method and an identification procedure for the systems with integrators. First, preprocessing of input-output data for such systems is proposed, which removes low-frequency disturbances. Second, a new identification procedure for such systems is proposed, which applies an integrator on input data. Finally, effectiveness of the proposed methods is examined through numerical examples.