Sizing Optimization of Pneumatic Actuation Systems Through Operating Point Analysis

Vigolo, Vinícius; Negri, Victor Juliano De

doi:10.1115/1.4049170

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…The selection of the actuators and valves for the distributor was made based on the operating point method [20,21]. A hydropneumatic jack with a maximum capacity of 294 kN was designed in partnership with the company BOVENAU.…”

Section: Figure 8 -Test Rig Results For Position Control Using Pressu...mentioning

confidence: 99%

Development of Pneumatic Technology for Automation and Control of Small Hydropower Plants

Vigolo

Conterato

Negri

2023

Linköping Electronic Conference Proceedings

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Small hydropower plants have been seen as a more sustainable source of energy in comparison with large hydropower plants due to the smaller required flooding area. However, every source of energy production has, inevitably, an impact on the environment. Aiming to reduce the usage of fossil-based products, such as hydraulic oil, a joint effort has been made between the Laboratory of Hydraulic and Pneumatic systems and the companies Reivax Automation and Control and China Three Gorges, in order to introduce the pneumatic technology to the hydrogeneration sector. Characteristics such as easy installation and maintenance, low acquisition costs, and mainly, low environmental impact, make the pneumatic technology an excellent candidate to replace the hydraulic servo actuators that have been traditionally used for automation and control in hydropower plants, which use large quantities of hydraulic oil and provide a high risk of a river bed contamination due to possible leakages or incorrect disposal of hydraulic oil. This paper presents two cycles of development of a pneumatic solution to automate and control the generating unit of small hydropower plants. It includes the first proposed solutions, proof of concepts and drawbacks that were faced, as well as the new challenges and achievements that rose during the design process. The paper also presents the most up-to-date results from a pilot project where a fully pneumatic solution was applied for a generating unit with 438 kVA of generating capacity and a model of development that was identified based on common activities performed during the first two cycles of development.

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Section: Figure 8 -Test Rig Results For Position Control Using Pressu...mentioning

confidence: 99%

Development of Pneumatic Technology for Automation and Control of Small Hydropower Plants

Vigolo

Conterato

Negri

2023

Linköping Electronic Conference Proceedings

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“…Even if the force and acceleration profiles result from the application and can only be specified in a highly simplified form, there are a number of methods that attempt to do just that. These include force equilibrium method [5], minimum cylinder [3], exergy equilibrium method [6], operating point analysis [7].…”

Section: State Of the Artmentioning

confidence: 99%

“…A constant velocity can also be directly specified in the known methods: force equilibrium method [5], exergy equilibrium method [6] and operating point analysis [7]. As shown in [5], the results are very similar but not equal.…”

Section: Assumption Of Constant Velocitymentioning

confidence: 99%

Sizing of Pneumatic Drives Under Energy Efficiency Aspects

Doll,

Neumann,

Gauche

2024

14th International Fluid Power Conference

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The correct sizing of pneumatic drives plays a central role when it comes to energy efficiency. While there are simple design formulas for force-based tasks such as pressing or clamping in order to size the drive efficiently, there is no such easy methodology for motion tasks.Up to now, the sizing of pneumatic drives has mainly been experience-based or simulation-based. A tool from Festo [1] now enables formula-based sizing without simulation, which directly provides the optimum piston diameter and other components. The approach behind this is based on the natural frequency of the pneumatic drive.The main drawback of this method is that it is only applicable for horizontal installation positions. Based on more recent findings (which arose in a joint project with the TU Dresden [2]) and based on numerous simulations and measurements, this formula has now been extended so that it can also be used with external forces and thus also for a vertical installation position.

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