Simulation of hydraulic check valve for forestry equipment

Nedić, Novak; Pršić, Dragan; Fragassa, Cristiano; Stojanović, Vladimir; Pavlović, Ana

doi:10.1504/ijhvs.2017.084875

Cited by 43 publications

(9 citation statements)

References 10 publications

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“…An efficient wood harvesting action aims at fully recovering wood as a measure to maximize the profit [3], also in terms of new methods for machining plans optimisation [4] or technical solutions for improving the equipment efficiency [5][6]. But safety prescriptions should be obeyed each time when harvesting operations are performed [7].…”

Section: Introductionmentioning

confidence: 99%

Investigating the influence of design factors on noise and vibrations in the case of chainsaws for forestry work

Kováč¹,

Krilek²,

Dado³

et al. 2018

FME Transactions

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In the recent time forest harvesting is mainly related to the use of chainsaws. They are acceptably light, safe, cheap and multifunctional. At the same time, chainsaws can cause personal illnesses considering their vibrations and noise. This article deals with conditions and assessment evaluation of effects on workers caused by vibrations and noise in the case of professional chainsaws in operation. Mechanical vibrations and noise are mainly related to the back-and-forth movement of the piston, and to a lesser extent, to the cutting chain. The experiment revealed, in general, that design parameters have a minimal influence on chainsaw vibration and noise emissions. Specifically, the statistical analysis for frequency weighted vibration showed no difference between types of guide bars, types of saw chains and wood plant in terms of noise and vibration on handles.

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Section: Introductionmentioning

confidence: 99%

Investigating the influence of design factors on noise and vibrations in the case of chainsaws for forestry work

Kováč¹,

Krilek²,

Dado³

et al. 2018

FME Transactions

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show abstract

“…In addition, machine learning techniques have emerged to integrate with RSS or CSI scheme to further optimize spoofing detection performance [13,14,15,16]. In complex dynamic communication models, i.e., the hydraulic systems inspired communication models [17], the optimal solutions can be obtained by using metaheuristic algorithms [18,19].…”

Section: Many Location Spoofing Detection or Robust Localization Algomentioning

confidence: 99%

Physical layer authentication under intelligent spoofing in wireless sensor networks

Gao

Feng

et al. 2020

Signal Processing

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Location based access in wireless sensor networks (WSN) are vulnerable to location spoofing attacks. In this paper, we investigate the physical layer (PHYlayer) authentication in the threat of an intelligent location spoofing attack. The intelligent attack can emulate the legitimate channel information and maximize its long-term cumulative reward. First, we analyze the feasibility of this intelligent attack and investigate how it threats to the networks. Specifically, we derive the optimal transmit power allocation and find the worst case for the defenders, namely optimal intelligent attack, in which the attacker can learn the intelligent attack action based on the beamforming with optimal transmit power allocation. To defend against such an intelligent attack with high accuracy and low overhead, we develop a cooperative PHY-layer authentication scheme. Then, we provide an in-depth analysis on the belief and derive the belief bounds and the closed-form expression for the belief threshold. Furthermore, considering the whole computation complexity and the double counting problem in a loopy graph, we propose the cooperative neighbour selection algorithm to $ Fully documented templates are available in the elsarticle package on CTAN.

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“…Bond graph is chosen for modeling the systems because it has unified multi-physics system modeling tool and is used for graphical representation of a physical dynamical system with power exchange among system components. Also, it is highly capable to interact multiple energy domains [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Application Based Performance Analysis of a Priority Flow Divider Valve Using Power Hydraulic Systems

Kumar¹,

Mahato

2021

Preprint

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Priority flow divider valve (PFDV) splits the flow in two different paths: Primary flow path and Secondary flow path. It can be used in twice applications: a system needs to perform dual functions against dual loads simultaneously and to obtain a stable flow by supplying a compensated flow from secondary flow line to the primary flow line using an energy storage device and a control valve. Two different hydraulic systems are identified to analyze the steady and dynamic performance of the PFDV. The first hydraulic system with PFDV is designed for automobile steering system with a load sensing control strategy in the presence of multiple actuators whereas second system is designed for wind turbine hydraulic power transmission to obtain stable power from it in the absence of generator. Both power hydraulic systems are modeled using bond graph technique and simulated in SYMBOLS SHAKTI software to analyze the PFDV performance.

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Simulation of hydraulic check valve for forestry equipment

Cited by 43 publications

References 10 publications

Investigating the influence of design factors on noise and vibrations in the case of chainsaws for forestry work

Investigating the influence of design factors on noise and vibrations in the case of chainsaws for forestry work

Physical layer authentication under intelligent spoofing in wireless sensor networks

Application Based Performance Analysis of a Priority Flow Divider Valve Using Power Hydraulic Systems

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