Jizai Arms 超肢体机器人系统 by Team Jizai Arms is a highly esteemed winner of the very prestigious 2023 A' Design Award 金奖 in 控制论、假肢与植入体设计 Competition Category.

金控制论· 2023

Jizai Arms 超肢体机器人系统

by Team Jizai Arms

Client: The University of Tokyo

A' Design Award 金奖 Winner in 控制论 Category

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The Design

About Jizai Arms 超肢体机器人系统

Jizai Arms 是一套穿戴于身体之上的超肢体机器人系统。该系统由带有六个接口的可穿戴基座单元与可拆卸的机械臂组成,每条机械臂具备五个自由度。机械臂可快速装卸,因而穿戴者之间能够相互交换机械臂。外观部件采用三维打印制造,既可实现复杂造型,又能减轻重量。机械臂通过手动操控的二分之一比例模型进行操作,模型的姿态被直接映射到机械臂上。

The Recognition

About the A' Design Award 金奖

Jizai Arms 超肢体机器人系统是 A' Design Award 金奖得主，这是授予一流、绝妙而杰出设计的极为崇高的认可。金奖得主是极具创新、极富远见且璀璨夺目的创作，反映出其设计师的天才、智慧与才干。预计Jizai Arms 超肢体机器人系统将成为一项备受赞誉、引领潮流、气势恢宏的发明，带来前所未有的价值。这件赢得 A' Design Award 金奖的设计是一个壮观而受人敬重的项目，极大地造福并拓展艺术、科学、设计和技术的边界。Jizai Arms 超肢体机器人系统激起强烈的渴望，唤起激情，鼓励创造力，令我们着迷。

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: JIZAI ARMS is a supernumerary robotic limb system.
It was designed to enable social interaction between multiple JIZAI ARMS wearers such as an exchange of arms.JIZAI ARMS is a supernumerary robotic limb system consisting of a wearable base unit with detachable robotic arms. The system has been designed to enable social interaction between multiple wearers, such as exchanging arms, and to explore possible interactions between digital cyborgs in a cyborg society.
Dimensions & Packaging: Width 900mm x Depth 400mm x Height 1000mm

*A system contains attachable/detachable robotic limb and wearable base unit, dimensions changes up to layout and posture of arms.
Tags: Cyborg, Digital Cyborg, Social Digital Cyborg, Supernumerary Robotic Limb System, Robotic Limbs, Wearable Robotic Limbs, Human-Machine Integration, Human-Computer Integration, Robotics, Human-Robot Integration
Production Technology: This system contains a wearable base unit which has six terminal to attach arms and board to communication, and robotic arms with 5 DOF.

Exterior parts are designed with organic and complex shape to cover only necessory part and make it lighter, 3D printing enabled these complex shape.

We designers worked from considering basic engineering specification like motor layout and geometry of arms, to finalize exterior design.
This process made sophisticated design.
Design Challenge: Enabling quick and free attach/detach of arms is a core concept of JIZAI ARMS and system design for this feature was one of a hard point.
Production team invented connection system enables easy attach/detach and connect both electrically and physically, but stiff enough as a base of robotic arms.
From styling perspective, achieving a beautiful fusion of human body and machine was a challenging point. We designed this robotic system rationally but tried designing it visually fit to human body.
Research: JIZAI ARMS is a prototype to explore possible social interactions between digital cyborgs in a cyborg society, such as gifting body parts or exchanging arms.
In existing research in human augmentation, interesting changes of embodiment happened through using wearable robotics has reported.
We focused not only individual wearer but also embodied experience happen between multiple digital cyborgs, and made JIZAI ARMS as a prototype to make such experiences real.
Inspiration: In “One Arm”, Nobel Prize-winning author Yasunari Kawabata wrote a weird scene that a girl gives her arm to a man and a man stay a night with it.
He vividly described a man’s experience at the night with his wide-ranging emotional changing.
After a half a century, emerging human-machine integration technologies have begun to allow us to physically experience Kawabata’s world.
“JIZAI ARMS” are designed to explore possible interactions between digital cyborgs in a cyborg society.
Project Duration: The project started in Nov 2021 in part of JST INAMI JIZAI BODY PROJECT and completed production in September 2022. JIZAI ARMS has firstly used and shown in dance performances in JIZAI Collection held at Tokyo in Novenber 2022.
Operation Flow: JIZAI ARMS is a system contains wearable base unit and detachable robotic arms.
Robotic arms which connected to base unit are controlled by computer.
In current prototype, robotic arms are controlled using a 1/2 scale model as a controller, operator can control arms with moving a model like puppet.
Using this controller, operator controll robotic arms intuitively since a posture which operators made with model is directly applied to actual robotic arms.
Team Members: Design & Production: Nahoko Yamamura, Daisuke Uriu, Mitsuru Muramatsu, Yusuke Kamiyama, Shin Sakamoto, Shunji Yamanaka
Research Director: Masahiko Inami