Model-Based Design of Energy-Efficient Vacuum-Based Handling Processes

Gabriel, Felix; Bobka, Paul; Dröder, Klaus

doi:10.1016/j.procir.2020.03.006

Cited by 10 publications

(7 citation statements)

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“…This part has a large surface area compared to its thickness (<1 mm) and can therefore be simplified to a 2D polygon. Starting from the reference configuration (n = 3, d = 30 mm), eight further variants were created by full-factorial combination of [n 0 , n 1 , n 2 ] = [3,4,5] and [d 0 , d 1 , d 2 ] = [30 mm, 40 mm, 50 mm]. Hence, all additional configurations are oversized to a certain degree relative to the reference configuration.…”

Section: Resultsmentioning

confidence: 99%

“…The required evacuation time t E with an ejector that supplies a suction flow S can be computed by Equation (4). With the air consumption of the ejector C EJ , the resulting compressed air use for evacuation C E can be calculated by Equation (5):…”

Section: Investigation Of the Influence Of Surface Roughness On Leakagementioning

confidence: 99%

“…Therefore, already slight energy savings in the handling process can enable huge savings of the initially invested electrical energy [3]. Besides the development of isolated components [4] and the application-specific process planning and system configuration [5], one major field of activity aiming at increasing the energy-efficiency of vacuum-based handling processes is the targeted design of the gripping system. By using experimentally obtained knowledge about the gripper-object-specific achievable holding force, we demonstrated that for practically leakage-free vacuum-based gripping systems, about 50% of energy can easily be saved through a simple reduction of the desired pressure difference [6].…”

Section: Introductionmentioning

confidence: 99%

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Grasp Point Optimization and Leakage-Compliant Dimensioning of Energy-Efficient Vacuum-Based Gripping Systems

et al. 2021

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Vacuum-based handling, used in many applications and industries, offers great flexibility and fast handling processes. However, due to significant energy conversion losses from electrical energy to the useable suction flow, vacuum-based handling is highly energy-inefficient. In preliminary work, we showed that our grasp optimization method offers the potential to save at least 50% of energy by a targeted placement of individual suction cups on the part to be handled. By considering the leakage between gripper and object, this paper aims to extend the grasp optimization method by predicting the effective compressed air consumption depending on object surface roughness, gripper diameter and gripper count. Through balancing of the target pressure difference and the leakage tolerance in combination with the gripper count and gripper diameter, significant reductions of the compressed air, use and therefore the overall energy consumption, can be achieved. With knowledge about the gripper-specific leakage behavior, in the future it will be straightforward for system integrators to minimize the need for oversizing due to process-related uncertainties and therefore to provide application-specific and energy-optimized handling solutions to their customers.

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Section: Resultsmentioning

confidence: 99%

Section: Investigation Of the Influence Of Surface Roughness On Leakagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Grasp Point Optimization and Leakage-Compliant Dimensioning of Energy-Efficient Vacuum-Based Gripping Systems

et al. 2021

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“…A domain influenced by both, the digitalization as well as the trend to more and more mechatronic systems, are material handling systems using vacuum. These vacuum handling systems are widely used in production systems and automated handling tasks due to their robustness and easy implementation compared to competing technologies 7, 8. Throughout their ability to grip the object just from one side, they can easily adapt to different forms, sizes, and weights of objects with only little or no modifications 9.…”

Section: Introductionmentioning

confidence: 99%

“…They combine many advantages such as fast and wear‐free operation, as well as lightweight construction which allows mounting them directly on end‐of‐arm toolings for robots and handling systems leading to vacuum handling systems as functional all‐in‐one and ready‐to‐use‐devices, as shown on the left of Fig. 1 8, 11.…”

Section: Introductionmentioning

confidence: 99%

Simulation Model for Digital Twins of Pneumatic Vacuum Ejectors

et al. 2022

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Increasing productivity, as well as flexibility, is required for the industrial production sector. To meet these challenges, concepts in the field of “Industry 4.0” are arising, such as the concept of Digital Twins. Vacuum handling systems are a widespread technology for material handling in industry and face the same challenges and opportunities. In this field, a key issue is the lack of Digital Twins containing behavior models for vacuum handling systems and their components in different applications and use cases. A novel concept for modeling and simulating the fluidic behavior of pneumatic vacuum ejectors as key components of vacuum handling systems is proposed. In order to increase the simulation accuracy, the concept can access instance‐specific data of the used asset instead of object‐specific data. The model and the data are part of the Digital Twins of pneumatic vacuum ejectors, which shall be able to be combined with other components to represent a Digital Twin of entire vacuum handling systems. The proposed model is validated in an experimental test setup and in an industrial application delivering sufficiently accurate results.

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