Design and implementation of a hierarchical control system architecture for a modular pulsed power supply system

Durna, Emre; Cevik, Yasin; Karagoz, Mustafa; Civil, Anil

doi:10.1109/ipmhvc.2016.8012916

Cited by 10 publications

(8 citation statements)

References 17 publications

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“…As demonstrated through examples using exponential and Weibull distributions, the proposed method is applicable to arbitrary types of time to failure or propagation distributions of system components. Besides the smart home application illustrated in Section , other possible applications of the proposed model include, for example, computer networks and power distribution networks with hierarchical routing, sensor networks with multirelay communications, and hierarchical control systems …”

Section: Discussionmentioning

confidence: 99%

“…Besides the smart home application illustrated in Section 4, other possible applications of the proposed model include, for example, computer networks and power distribution networks with hierarchical routing, sensor networks with multirelay communications, and hierarchical control systems. 39,40 This work has assumed PFGE. As one direction of our future work, we will extend the proposed methodology to consider PF with selective effects, where a PF originating from a system component affects a subset of system components, instead of the entire system.…”

Section: Discussionmentioning

confidence: 99%

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Competing failure analysis considering cascading functional dependence and random failure propagation time

Zhao

Xing

2019

Quality & Reliability Eng

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Functional dependence (FDEP) exists in many real‐world systems, where the failure of one component (trigger) causes other components (dependent components) within the same system to become isolated (inaccessible or unusable). The FDEP behavior complicates the system reliability analysis because it can cause competing failure effects in the time domain. Existing works have assumed noncascading FDEP, where each system component can be a trigger or a dependent component, but not both. However, in practical systems with hierarchical configurations, cascading FDEP takes place where a system component can play a dual role as both a trigger and a dependent component simultaneously. Such a component causes correlations among different FDEP groups, further complicating the system reliability analysis. Moreover, the existing works mostly assume that any failure propagation originating from a system component instantaneously takes effect, which is often not true in practical scenarios. In this work, we propose a new combinatorial method for the reliability analysis of competing systems subject to cascading FDEP and random failure propagation time. The method is hierarchical and flexible without limitations on the type of time‐to‐failure distributions for system components. A detailed case study is performed on a sensor system used in smart home applications to illustrate the proposed methodology.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Competing failure analysis considering cascading functional dependence and random failure propagation time

Zhao

Xing

2019

Quality & Reliability Eng

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“…Propulsive force on the armature denoted as F pr is calculated using propulsive inductance gradient, L pr , and rail current I rail as in (1).…”

Section: ) Kinemechanical Calculationsmentioning

confidence: 99%

A Revised Inductance Distribution Analysis of Medium-Large Caliber Electromagnetic Launchers including a Large Bus Structure

Tosun¹,

Keysan²

2023

Preprint

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<div>Simulations are crucial in the electromagnetic launcher (EML) researches on account of extreme physical conditions. More energy into the system adds weight to the model’s accuracy as the operation risk rises. In this paper, the electromagnetic impact of the bus structure is discovered in a recently developed EMFY-3 electromagnetic launcher, is presented. An H-shaped bus structure is used for current injection. However, experiments showed that the H-shaped bus changes inductance calculations. A careful examination is made to reveal the physical reasoning of the bus impact. We hypothesize that the rail portion surrounded with bus geometry has less inductance than the rest due to the eddy current created by rail current transients, which should be calculated carefully through numerical calculations, i.e., 3-D Finite Element Method (FEM). Two different simulation models were constructed to test the hypothesis. Moreover, rail currents, breech, and muzzle voltages are measured to investigate electromagnetic calculations. Results showed a good agreement with experiments where the bus structure was modeled explicitly. That aspect showed that the bus structure should be well-examined when multiple PPS are connected.</div>

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“…ASELSAN Inc. has been conducting experimental and theoretical research on EML technologies since 2014 [1]- [4]. Firstgeneration 1-MJ and second-generation 3.25-MJ PPSs were developed and tested with 25 mm x 25 mm bore EMFY-1 at an open area test range.…”

Section: Introductionmentioning

confidence: 99%

Inductance Gradient Calculations of EMFY-3 Electromagnetic Launcher

Tosun¹,

Keysan²

2021

Preprint

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<div>ASELSAN Inc. has been working on electromagnetic launch technologies since 2014. The first prototype, EMFY-1, has a 25 mm × 25 mm square bore and 3-m-length rails. The second prototype, EMFY-2, has a 50 × 50 mm square bore and 3-m-length. In this paper, a recently developed prototype, EMFY-3, is presented, which has a 50 × 75 mm rectangular bore and 6-m-length. The input energy of the PPS is doubled to 8 MJ, and the 2.91 MJ muzzle energy is obtained up to now. Rail currents, breech, and muzzle voltages are measured to investigate electromagnetic calculations. Velocity curves are captured with Doppler radar, which enables us to establish propulsive inductance gradient L0pr transients empirically. The results confirm that L0 pr is constant throughout the launch, as no significant breaking mechanism occurs with the non-magnetic containment. However, a slight variation (%2 at maximum) happens from one launch to another with different rails’ current magnitudes. The transition phenomenon is a candidate for the drop in the L0 pr, as it occurs more likely at launches with higher linear current densities.</div>

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Design and implementation of a hierarchical control system architecture for a modular pulsed power supply system

Cited by 10 publications

References 17 publications

Competing failure analysis considering cascading functional dependence and random failure propagation time

Competing failure analysis considering cascading functional dependence and random failure propagation time

A Revised Inductance Distribution Analysis of Medium-Large Caliber Electromagnetic Launchers including a Large Bus Structure

Inductance Gradient Calculations of EMFY-3 Electromagnetic Launcher

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