Identification of positioning stage based on theoretical model and ARX model

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (13) : 66-69.

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Identification of positioning stage based on theoretical model and ARX model

Wang Jingshu1 Guo Jie2 Zhu Changan2

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Abstract

In order to realize the characteristics of the positioning stage, a model with single input and two-outputs has been developed and the positioning experiment has been done. Based on the kinetic model and the data after interpolating and normalizing, the unknown parameters have been identified by the aid of the least square method. Another identification method based on the ARX model has been applied to recognize the system of the inside stage. The comparison indicates that the ARX model is appropriate to describe the characteristics, while the kinetic model is meaningful for structure optimization.

Key words

positioning stage / kinetic model / system identification / ARX

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Wang Jingshu Guo Jie Zhu Changan. Identification of positioning stage based on theoretical model and ARX model[J]. Journal of Vibration and Shock, 2013, 32(13): 66-69