CAJ | 학술논문

针对工业生产过程中噪声往往为有色噪声的情况，提出一种改进的子空间辨识方法。传统的子空间辨识方法在系统存在有色噪声时辨识效果不佳，改进方法则采用变换系统模型形式来克服有色噪声对系统的影响，在辨识时直接利用变换系统模型后的数据得到系统较为准确的状态空间模型，实践证明，状态空间模型更适用于工业过程。连续搅拌反应釜（CSTR）系统是一类典型的工业生产系统，将子空间辨识方法应用于CSTR过程的仿真实验，通过比较改进前和改进后的系统预测误差，验证了所提方法的有效性。
침대공업생산과정중조성왕왕위유색조성적정황，제출일충개진적자공간변식방법。전통적자공간변식방법재계통존재유색조성시변식효과불가，개진방법칙채용변환계통모형형식래극복유색조성대계통적영향，재변식시직접이용변환계통모형후적수거득도계통교위준학적상태공간모형，실천증명，상태공간모형경괄용우공업과정。련속교반반응부（CSTR）계통시일류전형적공업생산계통，장자공간변식방법응용우CSTR과정적방진실험，통과비교개진전화개진후적계통예측오차，험증료소제방법적유효성。
In order to deal with non-stationary noise in the industrial production processes, an improved subspace identifi-cation method is proposed. The identification result is not efficient in presence of non-stationary noise through traditional subspace identification method. So the transformational system model form is used to eliminate the effect of non-stationary noise on system through improved subspace identification method. The accurate state-space model is obtained through identification using the transformational system model data. Practice has proved, the state-space model is more suitable for industrial processes. CSTR is a typical industrial production system and the subspace identification method is applied to the process simulation on a CSTR. Through comparisons of the predication error before and after improved, the effec-tiveness of the proposed method is showed.