Designation and Control of Landing Points for Competitive Robotic Table Tennis

Li, Jing; Chen, Xiaopeng; Huang, Qiang; Ying-xian, Duo

doi:10.5772/60855

Cited by 6 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The development of player error detection tools when performing smashes and blocks in Volleyball matches based on Net Sensors, and experts in their field validate VAR. Validation is defined as an act of proof appropriately that each material, process, procedure, activity, or mechanism used in production and supervision will always achieve the desired results (Li et al, 2015). Validation also determines the viable and inappropriate products according to the advice given by validators (Cheng, 2021).…”

Section: Resultsmentioning

confidence: 99%

Effectiveness of Sensor-Based Media to Improve Referee Education

Kasih

Faridah

Siregar

et al. 2022

IJEMST

View full text Add to dashboard Cite

The purpose of this research is to produce a new product in the form of censorship media and video assistant referee (VAR) in assisting referee leadership in a championship to achieve fair play. This research uses the Research and Development (RD) method from Sugiyono using ten steps. The place of research was carried out at the All-Indonesian Volleyball Association, Deli Serdang Regency. The population and sample in this study were 36 Deli Serdang Regency volleyball players with a small sample of 6 people, a large sample of 16, and a comparison sample of 14. For the referee sample, six nationally licensed and nine regional licensed referees. The results of this study include Net and VAR sensors used to develop a player error detection tool when smashing and blocking. The results are obtained from the data from expert validation, including: (1) Material experts 92.3% with the "Very Eligible" category. (2) Media Experts 92.5% with the "Very Eligible" category. In large-scale trials on referees and athletes, the resulting percentages were 90.8% and 92.7%, respectively, while in the comparison trial, the percentage produced was 92.5%.

show abstract

Section: Resultsmentioning

confidence: 99%

Effectiveness of Sensor-Based Media to Improve Referee Education

Kasih

Faridah

Siregar

et al. 2022

IJEMST

View full text Add to dashboard Cite

show abstract

“…After decades of development, there have been many strategies proposed to achieve variable stiffness, including granular materials or laminar jamming structures, 14,15 fluid− polymer composites, 16,17 magnetorheological materials, 18−20 electrorheological materials, 21,22 shape memory polymers, 23−25 shape memory alloys, 26,27 liquid crystal elastomers, 28−30 and low-melting-point alloys, 31−33 which are desired in many technological fields such as soft robotics, 34−38 medical devices, 39 aerospace, 40,41 automotive industry, 18,19 and wearable electronics. 42 However, most of these stimulus methods require bulky equipment that adds considerable design complexity, weight, and cost to engineered systems, 2,43 which limit their application. For example, magnetorheological materials can only show anisotropic stiffness change, the range of stiffness change is relatively small, and also need affiliated equipment to generate a magnetic field, 2 while electrorheological materials normally operate at a relatively higher voltage stimulation (1−5 kV) and possess high-energy consumption and safety risks.…”

Section: Introductionmentioning

confidence: 99%

“…After decades of development, there have been many strategies proposed to achieve variable stiffness, including granular materials or laminar jamming structures, , fluid–polymer composites, , magnetorheological materials, − electrorheological materials, , shape memory polymers, − shape memory alloys, , liquid crystal elastomers, − and low-melting-point alloys, − which are desired in many technological fields such as soft robotics, − medical devices, aerospace, , automotive industry, , and wearable electronics . However, most of these stimulus methods require bulky equipment that adds considerable design complexity, weight, and cost to engineered systems, , which limit their application.…”

Section: Introductionmentioning

confidence: 99%

Stiffness Variable Polymer for Soft Actuators with Sharp Stiffness Switch and Fast Response

Liu

Wang

Huang

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Stiffness variable polymers are an essential family of materials that have aroused considerable attention in soft actuators. Although lots of strategies have been proposed to achieve variable stiffness, it remains a formidable challenge to achieve a polymer with a wide stiffness range and fast stiffness change. Herein, a series of variable stiffness polymers with a fast stiffness change and wide stiffness range were successfully synthesized, and the formulas were optimized via Pearson correlation tests. The rigid/soft stiffness ratio of the designed polymer samples can reach up to 1376-folds. Impressively, owing to the phase-changing side chains, the narrow endothermic peak can be observed with full width at half-maximum within 5 °C. Moreover, the shape memory properties of the shape fixity (R f ) and shape recovery ratio (R r ) values of the shape memory properties could reach up to 99.3 and 99.2%, respectively. Then, the obtained polymer was introduced into a kind of designed 3D printing soft actuator. The soft actuator can achieve sharp heating−cooling cycle of 19 s under a 1.2 A current with 4 °C water as coolant and can lift a 200 g weight at the actuating state. Moreover, the stiffness of the soft actuator can reach up to 718 mN/mm. The soft actuator exhibits an outstanding actuate behavior and stiffness switchable capability. We expect our design strategy and obtained variable stiffness polymers to be potentially applied in soft actuators and other devices.

show abstract

Effect of Filler Aspect Ratio on Stiffness and Conductivity in Phase‐Changing Particulate Composites

Nasab

Buckner

Yang

et al. 2021

Adv Materials Technologies

View full text Add to dashboard Cite

Variable stiffness in elastomers can be achieved through the introduction of low melting point alloy particles, such as Field's metal (FM), enabling on‐demand switchable elasticity and anisotropy in response to thermal stimulus. Because the FM particles are thermally transitioned between solid and liquid phases, it is beneficial for the composite to be electrically conductive so the stiffness may be controlled via direct Joule heating. While FM is highly conductive, spherical particles contribute to a high percolation threshold. In this paper, it is shown that the percolation threshold of FM particulate composites can be reduced with increasing particles aspect ratio. Increasing the aspect ratio of phase‐changing fillers also increases the rigid‐to‐soft modulus ratio of the composite by raising the elastic modulus in the rigid state while preserving the low modulus in the soft state. The results indicate that lower quantities of high aspect ratio FM particles can be used to achieve both electrical conductivity and stiffness‐switching via a single solution and without introducing additional conductive fillers. This technique is applied to enable a highly stretchable, variable stiffness, and electrically conductive composite, which, when patterned around an inflatable actuator, allows for adaptable trajectories via selective softening of the surface materials.

show abstract

Designation and Control of Landing Points for Competitive Robotic Table Tennis

Cited by 6 publications

References 27 publications

Effectiveness of Sensor-Based Media to Improve Referee Education

Effectiveness of Sensor-Based Media to Improve Referee Education

Stiffness Variable Polymer for Soft Actuators with Sharp Stiffness Switch and Fast Response

Effect of Filler Aspect Ratio on Stiffness and Conductivity in Phase‐Changing Particulate Composites

Contact Info

Product

Resources

About