No. 58
PickHits
By : Azumi Maekawa
Entrant’s location : 日本
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Description
PickHits is a prototype for generating experiences that hit a target computationally in the physical world. A human throws an object with a robotic hand device that controls only the grasping and release of the object. The developed system computes the projectile trajectory in real time while a human swings his/her arm and plays a role to add sufficient kinetic energy to the object. The object is released at the moment when a desired trajectory is obtained with respect to a defined target according to human motion. In other words, throwing is not performed while the computed projectile trajectory deviates from the target. The release is performed by the machine while the human performs the arm swing. Does the human feel that he/she has caused a phenomenon that results from it? By combining the actions of humans and machines, we explore the boundary and new interactions between them. size: 2×2×4 m (minimum) year: 2019 contents: a handheld device, control unit, optical motion capture camera system,
What did you create?
PickHits is a prototype for generating experiences that hit a target computationally in the physical world. A human throws an object with a robotic hand device that controls only the grasping and release of the object. The developed system computes the projectile trajectory in real time while a human swings his/her arm and plays a role to add sufficient kinetic energy to the object. The object is released at the moment when a desired trajectory is obtained with respect to a defined target according to human motion. In other words, throwing is not performed while the computed projectile trajectory deviates from the target. The release is performed by the machine while the human performs the arm swing. Does the human feel that he/she has caused a phenomenon that results from it? By combining the actions of humans and machines, we explore the boundary and new interactions between them.
Why did you make it?
A trajectory of an object thrown into the air is determined according to the laws of physics. Isn’t it possible to control the projectile trajectory arbitrary by intervening a human throwing motion using a computational process or robotics technologies by controlling the release timing? Also, Dose the intervened human feel that the action that has been performed and the consequences of the action are the phenomena that they have caused? To answer these questions, as a prototype, we developed a throwing system with a handheld device in a human-machine hybrid manner. We also use this system to explore the elements necessary for human-machine cooperation systems.
How did you make it?
We developed a dedicated robotic handheld device, which has an actuated one degree of freedom, to control human’s release timing in throwing. The position and orientation of the device are acquired at 2000Hz by an onboard sensor attached to the device and motion capture cameras installed in the environment. The developed system computes and predicts projectile trajectories based on the acquired data in real time. The release is performed at the moment when a desired trajectory is obtained with respect to a defined target according to human motion.
Your entry’s specification
Handheld device: metal, resin, DC motor, IMU sensor (size) 0.2×0.2×0.5m 1.0 kg Control unit: Laptop, microcontroller, circuit board (size)0.5×0.5×0.2 m 3.0 kg Motion capture system: capture cameras(×8) total weight 6 kg (+ clamp to attach, frame) total area size: 2×4×2 m (minimum)