A Modified IMC Structure to Independently Select Phase Margin and Gain Cross-over Frequency Criteria

Arya, Pushkar Prakash; Chakrabarty, Sohom

doi:10.1016/j.ifacol.2018.05.066

Cited by 16 publications

(17 citation statements)

References 17 publications

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“…The proposed m‐IMC control structure is given in Fig. 1 a [39]. In the figure,

G_{p} false(s false)

is actual plant,

\overset{false^}{G} false(s false)

is a nominal plant model,

Q false(s false)

is IMC controller and

K false(s false)

is additional controller which is to be designed as per specific requirement.…”

Section: Evaluation Of M‐imc Structurementioning

confidence: 99%

“…In the presence of additional controller

K false(s false)

in the m‐IMC, these need to be re‐evaluated so as to understand whether the promised objectives of standard IMC are fulfilled even when the modification in its structure is made. As per authors' knowledge, this exercise has not been undertaken in previous works considering m‐IMC structure [39].…”

Section: Evaluation Of M‐imc Structurementioning

confidence: 99%

“…However, enhancing the bandwidth of the system, the transient response could be further improved. To achieve this an additional controller

K false(s false)

is introduced in the basic IMC structure [39] as shown in Fig. 1 a .…”

Section: Introductionmentioning

confidence: 99%

“…Novelty and major contributions in the paper are highlighted below: • An m‐IMC structure [39] as in Fig. 1 is used to enhance the bandwidth of the system for the same

A_{m}

and

ϕ_{m}

specifications.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Robust internal model controller with increased closed‐loop bandwidth for process control systems

Arya

Chakrabarty

2020

IET Control Theory & Appl

Self Cite

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“…The proposed m‐IMC control structure is given in Fig. 1 a [39]. In the figure,

G_{p} false(s false)

is actual plant,

\overset{false^}{G} false(s false)

is a nominal plant model,

Q false(s false)

is IMC controller and

K false(s false)

is additional controller which is to be designed as per specific requirement.…”

Section: Evaluation Of M‐imc Structurementioning

confidence: 99%

“…In the presence of additional controller

K false(s false)

Section: Evaluation Of M‐imc Structurementioning

confidence: 99%

“…However, enhancing the bandwidth of the system, the transient response could be further improved. To achieve this an additional controller

K false(s false)

is introduced in the basic IMC structure [39] as shown in Fig. 1 a .…”

Section: Introductionmentioning

confidence: 99%

“…Novelty and major contributions in the paper are highlighted below: • An m‐IMC structure [39] as in Fig. 1 is used to enhance the bandwidth of the system for the same

A_{m}

and

ϕ_{m}

specifications.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Robust internal model controller with increased closed‐loop bandwidth for process control systems

Arya

Chakrabarty

2020

IET Control Theory & Appl

Self Cite

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“…In this respect, the concept of fractional-order (FO) control is investigated, which extends a general linear proportional derivative (PD) controller with an additional coefficient to account for robustness and a fast transient similarly, as assessed by Deutschmann et al 18 Since relevant works by pioneers such asOustaloup, 19 Oustaloup et al, 20 and Podlubny, 21 FO calculus has attracted research community as well as industrial community and its application in science and engineering is increasing, [22][23][24] Regarding control systems, it is observed that FO controllers perform better than their corresponding integer-order controllers. 22,23,25 Another advantage is that the FO controller provides more number of tuning parameters, making it possible to incorporate additional design specifications in the controller design. 22,26 The main contribution of this work is to extend the FO controller presented by Deutschmann et al 18 to the MIMO case by the transformation suggested by Deutschmann et al 27 The controller proposed here is a generalized FO Proportional Derivative (FOPD) controller since, as will be Tendon-driven continuum mechanism applied as a neck in DAVID.…”

Section: Introductionmentioning

confidence: 99%

Multi-input multi-output fractional-order control of an underactuated continuum mechanism

Deutschmann

Monje

Ott

2020

International Journal of Advanced Robotic Systems

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This article treats the design and implementation of a multi-input multi-output fractional-order controller for a nonlinear system composed of a tendon-driven continuum mechanism. As the continuum can be deformed along all Cartesian directions, it is suitable for the application as a flexible neck of a humanoid robot. In this work, a model-based control approach is proposed to control the position of the head, that is, the rigid body attached to the top of the continuum mechanism. Herein, the system is modeled as a rigid body on top of a nonlinear Cartesian spring, with an experimentally obtained deflection characteristic which provides a simple and real-time capable model. By nonlinear feedback, the output dynamics are linearized and decoupled, which enables the design of single-input single-output fractional-order controllers for the regulation of each output independently. The design of a fractional-order [Formula: see text] controller is discussed to incorporate robustness and a fast transient response. The proposed control approach is tested in several experiments on the real system.

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Robust control strategies applicable to DC–DC converter with reliability assessment: A review

Gupta,

Garg

et al. 2024

Adv Control Appl

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This paper provides an overview of various control strategies for DC–DC converters along with a brief discussion on various performance indices for evaluating the reliability of designed controller. DC–DC converters are emerging as the fastest‐growing interfacing devices in the world because of their emergent applications in almost all domains of engineering. Notably, the non‐linear behavior of DC–DC converters offers a perplexing problem in designing a robust controller. A robust controller must ensure proper closed‐loop stability with desired performance and reliable control for output voltage regulation in the event of various possible perturbations. This creates the requirement for practically implementable non‐linear controllers that can effectively overlook the drawbacks of linear controllers. The prominence of this composition is based on the expansion in tuning techniques of proportional‐integral‐derivative controller gain parameters using linear strategies and heading towards non‐linear strategies by reviewing 196 research papers. The modification in non‐linear control strategies in terms of their fundamental features associated with key benefits and limitations are comprehensively reviewed. This study mostly revolves around non‐linear internal model control (IMC) strategies for parameter tuning of IMC‐based controllers for various order of plants with an improved degree of freedom.

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A Modified IMC Structure to Independently Select Phase Margin and Gain Cross-over Frequency Criteria

Cited by 16 publications

References 17 publications

Robust internal model controller with increased closed‐loop bandwidth for process control systems

Robust internal model controller with increased closed‐loop bandwidth for process control systems

Multi-input multi-output fractional-order control of an underactuated continuum mechanism

Robust control strategies applicable to DC–DC converter with reliability assessment: A review

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