Periodic output feedback based discrete-time sliding mode control for multivariable systems

Priya, P S Lal; Bandyopadhyay, B.

doi:10.1109/icit.2012.6210052

Cited by 8 publications

(6 citation statements)

References 26 publications

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“…Φ and Γ are constant matrices from system (16). Let us first develop the result for the case, 3Δ = τ i.e, Δ = τ/3…”

Section: Main Result-periodic Output Feedback Control For Delta Omentioning

confidence: 99%

“…This technique is known as multirate output feedback technique [10]. If the system output is sampled faster than the input [11], the method is known as Fast Output Sampling (FOS) and if the system output is sampled slower than the input, the method is known as Periodic Output Feedback (POF) [12], [13], [14], [15], [16] technique. But with high sampling rates these techniques also fail due to the numerical ill-conditioning with the use of shift operators.…”

Section: Introductionmentioning

confidence: 99%

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Periodic output feedback control for Delta operator systems

Bandyopadhyay

Priya

2013

2013 International Conference on Control Communication and Computing (ICCC)

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This paper proposes an algorithm for periodic output feedback (POF) control for Delta operator systems. The Delta operator creates the rapprochement between analog and discrete dynamic system models and establishes the natural framework to investigate the behavior of discrete dynamic models with fast sampling rates. It is shown here that, the periodic output feedback control fails for discrete-time systems represented by the traditional shift operator for smaller values of sampling time, whereas the same is possible if it is represented in the delta domain. Since the proposed algorithm is based on output feedback, it is more practical in comparison to the state feedback based control algorithms. The design method is illustrated through a numerical example and the simulation results show the effectiveness of the proposed method.

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“…Φ and Γ are constant matrices from system (16). Let us first develop the result for the case, 3Δ = τ i.e, Δ = τ/3…”

Section: Main Result-periodic Output Feedback Control For Delta Omentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Periodic output feedback control for Delta operator systems

Bandyopadhyay

Priya

2013

2013 International Conference on Control Communication and Computing (ICCC)

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“…(i) Te main purpose of this article is to suggest the best input-output sampling time intervals out of different data reporting rates for the discrete mode controller in a given LFC system. Te controller is designed to account for the fact that a data reporting rate can only change in a set range [30]. (ii) An improved squirrel search algorithm driven cascaded 2DOF-PID-FOI controller for load frequency control of the renewable energy-based hybrid power system is presented in [31][32][33].…”

Section: Contributionmentioning

confidence: 99%

The Discrete Load Frequency Control System Using a Robust Periodic Output Feedback Controller

Kumawat¹,

Bhadu²,

Kumar³

et al. 2023

Journal of Electrical and Computer Engineering

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The load frequency control (LFC) is a most important tool for the frequency regulation mechanism in the widely spread modern power system. The LFC system consists of a communication structure to transmit the measurement and control signal. Usually the controllers in LFC systems are designed and implemented in continuous mode of operation. This article investigates the discrete mode load frequency control (LFC) mechanism, by employing the concept of the periodic output feedback (POF)-based controller with varying input and output sampling frequencies. Both the optimal sampling frequency and the optimal POF controller gain matrix are found by using the particle swarm optimization (PSO) method. The POF-based controller is intended for usage in two-area multisource LFC systems, with varying input and output sampling frequencies. The performance analysis takes into account a variety of scenarios, including those without a conventional stabilizer, with conventional continuous and corresponding discrete mode PSS, and a proposed discrete mode POF controller. Furthermore, the efficacy of the discrete mode POF controller is evaluated on the MATLAB/Simulink platform.

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“…The cinematic model of POF control law is depicted in Figure 1. Here it is presumed that (ø_τ ,C) is observable and (ø ,Γ) is controllable with controllability index ν such that N≥ν (Priya et al, 2012, Bandyopadhyay et al, 2005, & Patre et al, 1998. 4) is implemented into (3), implies:…”

Section: Background Of Periodic Output Feedback (Pof) Controlmentioning

confidence: 99%

“…In the Multirate Output Feedback(MOF) control system, the sampling of control input and sensor output is considered at various rates. If the system input is sampled at a faster pace, as compared to system output, it is described as Periodic Output Feedback(POF) (Chammas et al, 1979, Priya et al, 2012& Bandyopadhyay et al, 2005. However, for the controllable and observable plant, the pole placement issue may be dealt with the time-varying POF method, as shown by (Chammas et al, 1979).…”

Section: Introductionmentioning

confidence: 99%

Recommendations of Optimal Sampling Rates for Periodic Output Feedback Based Discrete Mode PSS

Bhadu

2021

JER is an international, peer-reviewed journal that publishes f

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In this paper, an attempt is made to recommend the optimal sampling time period for Periodic Output Feedback (POF) based discrete mode power system stabilizer (DPSS). Various collection of input and output sampling time interval has been used in the designing of POF based DPSS. The Particle Swarm Optimization (PSO) technique is used to obtain the optimal gain matrix of the POF controller as well as the optimal sampling time intervals. The effectiveness of POF based DPSS over continuous mode lead-lag PSS is certified using small-signal stability studies. The parameters of lead-lag type continuous mode PSS is also tuned using the PSO technique. The PSS is designed using POF technique for single machine infinite bus (SMIB) system, considering a variety of sampling time intervals at input-output port. Finally, a trial is made to propose an optimum input and output sampling time period for SMIB test power system, through simulation studies.

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Periodic output feedback based discrete-time sliding mode control for multivariable systems

Cited by 8 publications

References 26 publications

Periodic output feedback control for Delta operator systems

Periodic output feedback control for Delta operator systems

The Discrete Load Frequency Control System Using a Robust Periodic Output Feedback Controller

Recommendations of Optimal Sampling Rates for Periodic Output Feedback Based Discrete Mode PSS

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