An approach to model-following controller design based on a stabilized digital inverse system. (October 2015)

• Record Type: Journal Article
• Authors: Tanaka, Ryo; Inoue, Shota; Shibasaki, Hiroki; Ogawa, Hiromitsu; Murakami, Takahiro; Ishida, Yoshihisa
• Is Part Of: Proceedings of the Institution of Mechanical Engineers. Volume 229:Number 9(2015)
• Page Start: 829
• Page End: 837
• Publication Date: 2015-10
• Subjects: Auxiliary output -- digital inverse system -- linear quadratic regulator -- model-following control -- unstable zero; Mechanical engineering -- Periodicals; Automatic control -- Periodicals; Systems engineering -- Periodicals; 621.3
• DOI: 10.1177/0959651815585210
• Languages: English
• ISSNs: 0959-6518

Abstract

This article explains our approach to designing a model-following controller based on a stabilized digital inverse system. We use an inter-sample auxiliary observation output from the model as an input to the inverse system. We then design the inverse system for minimum and non-minimum phase plants. In order to reposition the unstable poles of the inverse system on a stable region, we determine the optimal gain vector using a linear quadratic regulator. We confirm the effectiveness of our proposed method by performing simulations for several plants and conducting an experiment with a direct current motor.