Failure Reconfiguration of Pumps in Two Reservoirs Connected to Overhead Tank

Patel, Ravi; Gojiya, Anil; Deb, Dipankar

doi:10.1007/978-981-13-1966-2_7

Cited by 10 publications

(10 citation statements)

References 8 publications

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“…The coupled tank is a typical industrial plant. Ravi Patel, Anil Gojiya, and Dipankar Deb used the DC gain technique to formulate failure reconfiguration of pumps in two reservoirs connected to the overhead tank [24]. To verify the correctness of the dual-locus diagram method, we conducted an experiment on coupled tanks.…”

Section: For First-order Time-delay Systemsmentioning

confidence: 99%

On Parameter Stability Region of LADRC for Time-Delay Analysis with a Coupled Tank Application

Chen

Jianqing

et al. 2020

Processes

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The control of time-delay systems is a hot research topic. Ever since the theory of linear active disturbance rejection control (LADRC) was put forward, considerable progress has been made. LADRC shows a good control effect on the control of time-delay systems. The problem about the parameter stability region of LADRC controllers has been seldom discussed, which is very important for practical application. In this study, the dual-locus diagram method, which is used to solve the upper limit of the LADRC controller bandwidth, is studied for both first-order time-delay systems and second-order time-delay systems. The characteristic equation roots distribution is firstly transformed into the problem of finding the frequency of the dual-locus diagram intersection point. To solve the problem for second-order time-delay system LADRC controllers, which is a dual 10-order nonlinear equation, a transformation has been made through Euler’s formula and genetic algorithm (GA) has been adopted to search for the optimal parameters. Simulation results and experimental results on coupled tanks show the effectivity of the proposed method.

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Section: For First-order Time-delay Systemsmentioning

confidence: 99%

On Parameter Stability Region of LADRC for Time-Delay Analysis with a Coupled Tank Application

Chen

Jianqing

et al. 2020

Processes

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“…Nevertheless, traditional manufacturing systems cannot successfully meet this requirement because they need large capital investments. To tackle these drawbacks in traditional manufacturing systems, reconfigurable manufacturing systems (RMSs) were developed [1][2][3]. RMSs are a new class of manufacturing systems and are subject to dynamic and random configurations in real time.…”

Section: Introductionmentioning

confidence: 99%

Intelligent Colored Token Petri Nets for Modeling, Control, and Validation of Dynamic Changes in Reconfigurable Manufacturing Systems

Kaid

Al-Ahmari

et al. 2020

Processes

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The invention of reconfigurable manufacturing systems (RMSs) has created a challenging problem: how to quickly and effectively modify an RMS to address dynamic changes in a manufacturing system, such as processing failures and rework, machine breakdowns, addition of new machines, addition of new products, removal of old machines, and changes in processing routes induced by the competitive global market. This paper proposes a new model, the intelligent colored token Petri net (ICTPN), to simulate dynamic changes or reconfigurations of a system. The main idea is that intelligent colored tokens denote part types that represent real-time knowledge about changes and status of a system. Thus, dynamic configurations of a system can be effectively modeled. The developed ICTPN can model dynamic changes of a system in a modular manner, resulting in the development of a very compact model. In addition, when configurations appear, only the changed colored token of the part type from the current model has to be modified. Based on the resultant ICTPN model, deadlock-free, conservative, and reversible behavioral properties, among others, are guaranteed. The developed ICTPN model was tested and validated using the GPenSIM tool and compared with existing methods from the literature.

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“…This requirement cannot, however, be satisfied successfully with traditional automated manufacturing systems, which require large capital investments. Reconfigurable manufacturing systems have now been developed to deal with those drawbacks in traditional automated manufacturing systems [3][4][5]. Reconfigurable manufacturing systems are a new kind of production systems that are randomly and dynamically configured in real time.…”

Section: Introductionmentioning

confidence: 99%

Automatic Supervisory Controller for Deadlock Control in Reconfigurable Manufacturing Systems with Dynamic Changes

Kaid

Al-Ahmari

et al. 2020

Applied Sciences

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In reconfigurable manufacturing systems (RMSs), the architecture of a system can be modified during its operation. This reconfiguration can be caused by many motivations: processing rework and failures, adding new products, adding new machines, etc. In RMSs, sharing of resources may lead to deadlocks, and some operations can therefore remain incomplete. The objective of this article is to develop a novel two-step solution for quick and accurate reconfiguration of supervisory controllers for deadlock control in RMSs with dynamic changes. In the first step, the net rewriting system (NRS) is used to design a reconfigurable Petri net model under dynamic configurations. The obtained model guarantees boundedness behavioral property but may lose the other properties of a Petri net model (i.e., liveness and reversibility). The second step develops an automatic deadlock prevention policy for the reconfigurable Petri net using the siphon control method based on a place invariant to solve the deadlock problem with dynamic structure changes in RMSs and achieve liveness and reversibility behavioral properties for the system. The proposed approach is tested using examples in the literature and the results highlight the ability of the automatic deadlock prevention policy to adapt to RMSs configuration changes.

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Failure Reconfiguration of Pumps in Two Reservoirs Connected to Overhead Tank

Cited by 10 publications

References 8 publications

On Parameter Stability Region of LADRC for Time-Delay Analysis with a Coupled Tank Application

On Parameter Stability Region of LADRC for Time-Delay Analysis with a Coupled Tank Application

Intelligent Colored Token Petri Nets for Modeling, Control, and Validation of Dynamic Changes in Reconfigurable Manufacturing Systems

Automatic Supervisory Controller for Deadlock Control in Reconfigurable Manufacturing Systems with Dynamic Changes

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