Modeling and sensitivity analysis of a pneumatic vibration isolation system with two air chambers

Moon, Jun-Hee; Lee, Bong-Gu

doi:10.1016/j.mechmachtheory.2010.08.006

Cited by 23 publications

(15 citation statements)

References 24 publications

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“…The calculation of the volume flow through the outlet nozzle was performed for the constant state, when the pressure in the side air chamber equalized (p 1 = p 2 ). With this assumption, the volumetric flow rate was calculated for the slit outlet nozzle [4,6]: The flow of air Q 3 through the annular slit formed between the lower surface of the pneumatic cushion and the rigid surface was calculated by integrating the elementary flow q r through a segment of the ring-shaped surface of the thickness of dr within limits from R 2 to [5,6]. After performing simple transformations, a formula was obtained describing the air flow rate at the pneumatic cushion outlet for a constant state:…”

Section: Model Of the Pneumatic Cushion With A Single Outletmentioning

confidence: 99%

Air consumption survey for pneumatic cushion in different nozzle configurations during moving loads

Kwiatkowski¹

2018

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The subject of this paper concerns the search for structural solutions of pneumatic cushions [1,2] in order to minimize the air consumption, operate at the lowest admissible pressure and compensate for the unevenness of the floor. The paper presents the solution with a multi-nozzle air outflow. This solution was obtained by a theoretical analysis, then a prototype of the device was made and laboratory tests were carried out. StreszczenieTematyka podjęta w referacie dotyczy poszukiwania rozwiązań konstrukcyjnych poduszek pneumatycznych [1, 2] w celu minimalizacji zużycia powietrza, pracy przy możliwie niskim ciśnieniu oraz uniezależnienia poduszki od wrażliwości na nierówności posadzki. W niniejszym artykule przedstawiono rozwiązanie z wielostrumieniowym wypływem powietrza. Rozwiązanie to uzyskano w wyniku analizy teoretycznej, następnie wykonano prototyp urządzenia i przeprowadzono badania stanowiskowe.Słowa kluczowe: poduszki pneumatyczne, zużycie powietrza, wielostrumieniowy wypływ

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Section: Model Of the Pneumatic Cushion With A Single Outletmentioning

confidence: 99%

Air consumption survey for pneumatic cushion in different nozzle configurations during moving loads

Kwiatkowski¹

2018

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“…, (15), and (16), one can develop a block diagram for the nozzle-flapper-relay, as shown in Figure 3.…”

Section: A Fractional Order Model For the Nozzle-flapper-relaymentioning

confidence: 99%

“…Recently in [16] a model of a pneumatic vibration isolation system (PVIS) has been presented. However, a thorough study on the modeling of the pneumatic elements via fractional order differential equations has not been considered yet.…”

Section: Introductionmentioning

confidence: 99%

Fractional Order Models of Industrial Pneumatic Controllers

Razminia

Băleanu

2014

Abstract and Applied Analysis

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This paper addresses a new approach for modeling of versatile controllers in industrial automation and process control systems such as pneumatic controllers. Some fractional order dynamical models are developed for pressure and pneumatic systems with bellows-nozzle-flapper configuration. In the light of fractional calculus, a fractional order derivative-derivative (FrDD) controller and integral-derivative (FrID) are remodeled. Numerical simulations illustrate the application of the obtained theoretical results in simple examples.

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“…This differs from the traditional air spring both in structure type and in the vibration characteristics. The compression of the gas in the traditional air spring was controlled by a piston, which acted on the pressure surface of the air spring [21][22][23]. As shown in Figure 1a, the displacement of the piston, x 0 , causes a compression of the air in the upper chamber.…”

Section: Introductionmentioning

confidence: 99%

The Stiffness and Damping Characteristics of a Dual-Chamber Air Spring Device Applied to Motion Suppression of Marine Structures

Zeng

Zhang

et al. 2016

Applied Sciences

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Dual-chamber air springs are used as a key component for vibration isolation in some industrial applications. The working principle of the dual-chamber air spring device as applied to motion suppression of marine structures is similar to that of the traditional air spring, but they differ in their specific characteristics. The stiffness and damping of the dual-chamber air spring device determine the extent of motion suppression. In this article, we investigate the stiffness and damping characteristics of a dual-chamber air spring device applied to marine structure motion suppression using orthogonal analysis and an experimental method. We measure the effects of volume ratio, orifice ratio, excitation amplitude, and frequency on the stiffness and damping of the dual-chamber vibration absorber. Based on the experimental results, a higher-order non-linear regression method is obtained. We achieve a rapid calculation model for dual-chamber air spring stiffness and damping, which can provide guidance to project design.

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Modeling and sensitivity analysis of a pneumatic vibration isolation system with two air chambers

Cited by 23 publications

References 24 publications

Air consumption survey for pneumatic cushion in different nozzle configurations during moving loads

Air consumption survey for pneumatic cushion in different nozzle configurations during moving loads

Fractional Order Models of Industrial Pneumatic Controllers

The Stiffness and Damping Characteristics of a Dual-Chamber Air Spring Device Applied to Motion Suppression of Marine Structures

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