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Exposure to soft robots decreases human fears about working with them


Exposure to soft robots decreases human fears about working with them
Washington State University doctoral students Justin Allen, left, and Ryan Dorosh, demonstrate a soft robot in development at WSU. Credit: Dean Hare, Washington State University Photo Services

Seeing robots made with soft, flexible parts in action appears to lower people’s anxiety about working with them or even being replaced by them.

A Washington State University study found that watching videos of a soft working with a person at picking and placing tasks lowered the viewers’ safety concerns and feelings of job insecurity. This was true even when the soft robot was shown working in to the person. This finding shows hold a potential psychological advantage over rigid robots made of metal or other hard materials.

“Prior research has generally found that the closer you are to a rigid robot, the more negative your reactions are, but we didn’t find those outcomes in this study of soft robots,” said lead author Tahira Probst, a WSU psychology professor.

Currently, human and rigid robotic workers have to maintain a set distance for , but as this study indicates, proximity to soft robots could be not only physically safer but also more psychologically accepted.

“This finding needs to be replicated, but if it holds up, that means humans could work together more closely with the soft robots,” Probst said.

The study, published in the journal IISE Transactions on Occupational Ergonomics and Human Factors, did find that faster interactions with a soft robot tended to cause more , but when the study participants had with robots, faster speed did not bother them. In fact, they preferred the faster interactions. This reinforces the finding that greater familiarity increased overall comfort with soft robots.

About half of all occupations are highly likely to involve some type of automation within the next couple decades, said Probst, particularly those related to production, transportation, extraction and agriculture.

Exposure to soft robots decreases human fears about working with them
Washington State University doctoral student Justin Allen demonstrates a picker attachment being developed to advance soft robot technologies. Credit: Dean Hare, Washington State University Photo Services

Soft robots, which are made with flexible materials like fabric and rubber, are still relatively new technology compared to rigid robots which are already widely in use in manufacturing.

Rigid robots have many limitations including their high cost and high safety concerns—two problems soft robots can potentially solve, said study co-author Ming Luo, an assistant professor in WSU’s School of Mechanical and Materials Engineering.

“We make soft robots that are naturally safe, so we don’t have to focus a lot on expensive hardware and sensors to guarantee safety like has to be done with rigid robots,” said Luo.

As an example, Luo noted that one rigid robot used for apple picking could cost around $30,000 whereas the current research and development cost for one , encompassing all components and manufacturing, is under $5,000. Also, that cost could be substantially decreased if production were scaled up.

Luo’s team is in the process of developing soft robots for a range of functions, including fruit picking, pruning and pollinating. Soft robots also have the potential help elderly or disabled people in home or health care settings. Much more development has to be done before this can be a reality, Luo said, but his engineering lab has partnered with Probst’s psychology team to better understand human-robot interactions early in the process.

“It’s good to know how humans will react to the soft robots in advance and then incorporate that information into the design,” said Probst. “That’s why we’re working in tandem, where the psychology side is informing the technical development of these robots in their infancy.”

To further test this study’s findings, the researchers are planning to bring participants into the lab to interact directly with soft robots. In addition to collecting participants self-reported surveys, they will also measure participants’ physical stress reactions, such as and galvanic skin responses, which are changes in the skin’s electrical resistance in reaction to emotional stress.

More information:
Tahira M. Probst et al, Effects of Prior Robot Experience, Speed, and Proximity on Psychosocial Reactions to a Soft Growing Robot, IISE Transactions on Occupational Ergonomics and Human Factors (2023). DOI: 10.1080/24725838.2023.2284193

Citation:
Exposure to soft robots decreases human fears about working with them (2023, December 5)
retrieved 5 December 2023
from https://techxplore.com/news/2023-12-exposure-soft-robots-decreases-human.html

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