MIMO Smith predictor: Global and structured robust performance analysis

Peña, Ricardo; Bolea, Yolanda; Puig, Vicenç

doi:10.1016/j.jprocont.2007.12.004

Cited by 39 publications

(16 citation statements)

References 18 publications

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“…In [53] a robust control design procedure is provided. It can be applied to the set of models that can be factorized into a rational MIMO model in series with left/ right diagonal (multiple) delay matrices.…”

Section: B Mimo Systemsmentioning

confidence: 99%

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Control of input/output delayed and disturbed unstable plants

Albertos

Garcia

Sanz

2015

2015 20th International Conference on Methods and Models in Automation and Robotics (MMAR)

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In this survey paper, different approaches to deal with input/output time delayed disturbed plants are considered. First, the classical Smith predictor and some of its modifications to deal with unstable and non-minimum phase plants are reviewed, being applied to single-input-single-output (SISO) plants. Then, combining the internal and external representation, a generalized dead-time compensator (DTC) is introduced. This new predictor provides a general solution for SISO plants, but fails when considering multi-input-multi-output (MIMO) plants, with different delays in each input/output channel. A detailed control design procedure is reviewed for these complex plants and some examples illustrate the controller design. Some suggestions for further improvements are also outlined.1 978-1-4799-8701-6/15/$31.00 ©2015 IEEE.

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Section: B Mimo Systemsmentioning

confidence: 99%

“…Once stabilized, any approach ( [54], [55], [52], [57], [56], [39], [1], [53]) can be used to reduce the coupling and get the required performance.…”

Section: ) Stabilization Of Delayed Unstable Mimo Systemsmentioning

confidence: 99%

Control of input/output delayed and disturbed unstable plants

Albertos

Garcia

Sanz

2015

2015 20th International Conference on Methods and Models in Automation and Robotics (MMAR)

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“…Recently, the SISO SP has been extended and generalized for MIMO systems. In [21], a structured uncertainty approach was implemented for SP's with diagonal delay matrices. This method, however, does not consider general and distinct time delays for each element of the plant transfer matrix.…”

Section: Introductionmentioning

confidence: 99%

Robust Smith Predictor Design for Time-Delay Systems with $$H_{\infty }$$ H ∞ Performance

Oliveira¹,

Nicoletti²,

Karimi³

2016

Recent Results on Time-Delay Systems

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A new method for robust fixed-order H ∞ controller design for uncertain time-delay systems is presented. It is shown that the H ∞ robust performance condition can be represented by a set of convex constraints with respect to the parameters of a linearly parameterized primary controller in the Smith predictor structure. Therefore, the parameters of the primary controller can be obtained by convex optimization. The proposed method can be applied to stable SISO and MIMO models with uncertain dead-time and with multimodel and frequency-dependent uncertainty. It is also shown that how the design method can be extended to unstable SISO models. The design of robust gain-scheduled dead-time compensators is also investigated. The performance of the method is illustrated for both SISO and MIMO systems by simulation examples.

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“…As a result, a transfer function matrix representation of the MIMO process is preferred in these cases [6]. Different approaches have been developed in order to design controller for multivariable systems with multiple time delays: some authors have extended the SP to the multivariable case [7][8][9]. In line with the previous ones, other works propose to solve the problem by means of an internal model control (IMC) applied to MIMO processes [10,11].…”

Section: Introductionmentioning

confidence: 99%

Inverted decoupling internal model control for square stable multivariable time delay systems

Garrido

Vázquez

Morilla

2014

Journal of Process Control

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This paper presents a new tuning methodology of the main controller of an internal model control structure for n×n stable multivariable processes with multiple time delays based on the centralized inverted decoupling structure. Independently of the system size, very simple general expressions for the controller elements are obtained. The realizability conditions are provided and the specification of the closed-loop requirements is explained. A diagonal filter is added to the proposed control structure in order to improve the disturbance rejection without modifying the nominal set-point response. The effectiveness of the method is illustrated through different simulation examples in comparison with other works.

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MIMO Smith predictor: Global and structured robust performance analysis

Cited by 39 publications

References 18 publications

Control of input/output delayed and disturbed unstable plants

Control of input/output delayed and disturbed unstable plants

Robust Smith Predictor Design for Time-Delay Systems with $$H_{\infty }$$ H ∞ Performance

Inverted decoupling internal model control for square stable multivariable time delay systems

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