Vibration-Assisted Handling of Dry Fine Powders

Dunst, Paul; Bornmann, Peter; Hemsel, Tobias; Sextro, Walter

doi:10.3390/act7020018

Cited by 18 publications

(8 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The signal for the piezoelectric actuator is amplified by a piezo linear amplifier (EPA-104, Piezo Systems Inc., Cambridge, MA, USA) (7). The parameters of the harmonic oscillations are monitored by a vibration sensor (8). The signals from the sensor and the generator are monitored by a digital oscilloscope (DS1054, RIGOL) (9).…”

Section: Methodology Of Experimental Investigationmentioning

confidence: 99%

“…The efficiency of manipulation and assembly of miniature and microminiature components currently are of great concern to various industries related to microtechnologies. For manipulation of miniature and microminiature bodies, a variety of techniques are used, ranging from prehensile pick and place techniques [1][2][3][4][5][6] to nonprehensile methods such as vibration-assisted manipulation [7][8][9]. However, prehensile techniques such as picking always have some mechanical effect on the body; besides, due to various shapes of the miniature and microminiature bodies being manipulated or assembled, microgrippers must be changed frequently when pick and place operations are used.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Manipulation of Miniature and Microminiature Bodies on a Harmonically Oscillating Platform by Controlling Dry Friction

et al. 2021

View full text Add to dashboard Cite

Currently used nonprehensile manipulation systems that are based on vibrational techniques employ temporal (vibrational) asymmetry, spatial asymmetry, or force asymmetry to provide and control a directional motion of a body. This paper presents a novel method of nonprehensile manipulation of miniature and microminiature bodies on a harmonically oscillating platform by creating a frictional asymmetry through dynamic dry friction control. To theoretically verify the feasibility of the method and to determine the control parameters that define the motion characteristics, a mathematical model was developed, and modeling was carried out. Experimental setups for miniature and microminiature bodies were developed for nonprehensile manipulation by dry friction control, and manipulation experiments were carried out to experimentally verify the feasibility of the proposed method and theoretical findings. By revealing how characteristic control parameters influence the direction and velocity, the modeling results theoretically verified the feasibility of the proposed method. The experimental investigation verified that the proposed method is technically feasible and can be applied in practice, as well as confirmed the theoretical findings that the velocity and direction of the body can be controlled by changing the parameters of the function for dynamic dry friction control. The presented research enriches the classical theories of manipulation methods on vibrating plates and platforms, as well as the presented results, are relevant for industries dealing with feeding, assembling, or manipulation of miniature and microminiature bodies.

show abstract

Section: Methodology Of Experimental Investigationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Manipulation of Miniature and Microminiature Bodies on a Harmonically Oscillating Platform by Controlling Dry Friction

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Parts were transported along a straight line on a platform subjected to horizontal harmonic oscillations while manipulating with the friction force by periodically exciting additional vibrations in the contact zone. Dunst et al [ 35 ] proposed a method for handling of dry fine powders by employing coordinated manipulations of effective friction. A pipe subjected to axial low frequency vibrations was applied for powder handling.…”

Section: Introductionmentioning

confidence: 99%

Nonprehensile Manipulation of Parts on a Horizontal Circularly Oscillating Platform with Dynamic Dry Friction Control

Kilikevičius

Liutkauskienė

Fedaravičius

2021

Sensors

View full text Add to dashboard Cite

This paper presents a novel method for nonprehensile manipulation of parts on a circularly oscillating platform when the effective coefficient of dry friction between the part and the platform is being dynamically controlled. Theoretical and experimental analyses have been performed to validate the proposed method and to determine the control parameters that define the characteristics of the part’s motion. A mathematical model of the manipulation process with dynamic dry friction control was developed and solved. The modeling showed that by changing the phase shift between the function for dynamic dry friction control and the function defining the circular motion of the platform, the part can be moved in any direction as the angle of displacement can be controlled in a full range from 0 to 2π. The nature of the trajectory and the mean displacement velocity of the part mainly depend on the width of the rectangular function for dynamic dry friction control. To verify the theoretical findings, an experimental setup was developed, and experiments of manipulation were carried out. The experimental results qualitatively confirmed the theoretical findings. The presented analysis enriches the classical theories of nonprehensile manipulation on oscillating platforms, and the presented findings are relevant for mechatronics, robotics, mechanics, electronics, medical, and other industries.

show abstract

“…By inducing these "jets" at different locations, bodies can be displaced a small amount. Dunst et al [41] applied the approach of vibration induced friction reduction for handling of dry fine powders. A pipe was used for handling that was subjected to axial low frequency oscillations, and radial high frequency vibrations were employed to manipulate frictional forces.…”

Section: Introductionmentioning

confidence: 99%

Vibrational Transportation on a Platform Subjected to Sinusoidal Displacement Cycles Employing Dry Friction Control

Kilikevičius

Fedaravičius

2021

Sensors

View full text Add to dashboard Cite

Currently used vibrational transportation methods are usually based on asymmetries of geometric, kinematic, wave, or time types. This paper investigates the vibrational transportation of objects on a platform that is subjected to sinusoidal displacement cycles, employing periodic dynamic dry friction control. This manner of dry friction control creates an asymmetry, which is necessary to move the object. The theoretical investigation on functional capabilities and transportation regimes was carried out using a developed parametric mathematical model, and the control parameters that determine the transportation characteristics such as velocity and direction were defined. To test the functional capabilities of the proposed method, an experimental setup was developed, and experiments were carried out. The results of the presented research indicate that the proposed method ensures smooth control of the transportation velocity in a wide range and allows it to change the direction of motion. Moreover, the proposed method offers other new functional capabilities, such as a capability to move individual objects on the same platform in opposite directions and at different velocities at the same time by imposing different friction control parameters on different regions of the platform or on different objects. In addition, objects can be subjected to translation and rotation at the same time by imposing different friction control parameters on different regions of the platform. The presented research extends the classical theory of vibrational transportation and has a practical value for industries that operate manufacturing systems performing tasks such as handling and transportation, positioning, feeding, sorting, aligning, or assembling.

show abstract

Vibration-Assisted Handling of Dry Fine Powders

Cited by 18 publications

References 15 publications

Manipulation of Miniature and Microminiature Bodies on a Harmonically Oscillating Platform by Controlling Dry Friction

Manipulation of Miniature and Microminiature Bodies on a Harmonically Oscillating Platform by Controlling Dry Friction

Nonprehensile Manipulation of Parts on a Horizontal Circularly Oscillating Platform with Dynamic Dry Friction Control

Vibrational Transportation on a Platform Subjected to Sinusoidal Displacement Cycles Employing Dry Friction Control

Contact Info

Product

Resources

About