Digital decoupling controller design for multiple time-delay continuous-time transfer function matrices

L.B. Xie, C.Y. Wu, L.S. Shieh and J.S.H. Tsai

International Journal of Systems Science, 2015, vol. 46, issue 4, 577-589

Abstract: This paper presents an extended adjoint decoupling method to conduct the digital decoupling controller design for the continuous-time transfer function matrices with multiple (integer/fractional) time delays in both the denominator and the numerator matrix. First, based on the sampled unit-step response data of the afore-mentioned multiple time-delay system, the conventional balanced model-reduction method is utilised to construct an approximated discrete-time model of the original (known/unknown) multiple time-delay continuous-time transfer function matrix. Then, a digital decoupling controller is designed by utilising the extended adjoint decoupling method together with the conventional discrete-time root-locus method. An illustrative example is given to demonstrate the effectiveness of the proposed method.

Date: 2015
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DOI: 10.1080/00207721.2013.792974

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