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Yamakita Lab
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A control engineering lab working on motion, from robots that perform on a horizontal bar to bipedal walking.

AboutAbout the lab
No Control, No Life
The Yamakita Lab conducts research on controlling the motion of robots and other systems, based on control engineering.
It covers a broad range, from expressing a system as a mathematical model to actually controlling it.
The lab builds and tests real hardware: robots that perform horizontal-bar routines, a motorcycle that does not fall over even when stopped, and a robot that walks on two legs.
It also studies components such as artificial muscles made from soft materials that bend with electricity.
Key terms
- Q-learning
- A method in which a computer learns, through repeated trial and error, how to act in each situation
- Flywheel
- A heavy rotating disk. It uses its tendency to keep spinning to stabilize motion
- Actuator
- A component that receives energy such as electricity and produces actual motion or force. Motors are an example
ResearchResearch themes
The Yamakita Lab conducts research in control engineering, covering a broad range from system modeling to control. It works on motion control and learning for robots, polymer actuators, engine control, and more.
*Illustrative imagePreventing Falls in Acrobatic Robots
Research on helping a robot that performs moves like the giant swing on a horizontal bar avoid falling by switching how it makes contact with the ground. The lab uses Q-learning, which learns behavior through trial and error, and works on learning on the real robot.
*Illustrative imageA Motorcycle Robot That Stays Upright Even When Stopped
A two-wheeled motorcycle falls over easily when it stops. The lab studies control that keeps it from falling while stationary, using a mounted balancer that can switch between a pendulum form and a flywheel form.
*Illustrative imageBipedal Walking Learned from Passive Walking
“Passive walking,” in which a walker goes down a slope without motor power, is energy efficient and walks naturally. This research incorporates a component called an inerter into the ankle to widen the range of slopes and speeds at which the walker can walk.
*Illustrative imagePolymer Actuators as Candidates for Artificial Muscles
Using soft polymer films that bend with electricity (IPMC), the lab builds mechanisms that move in a straight line, walking and swimming robots, and elements integrated with sensors.
MembersFaculty
The members of the Yamakita Lab consist of faculty, doctoral, master's, and undergraduate students, and administrative staff.
- Associate ProfessorMasaki YamakitaPublications ↗
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Robi by DeAGOSTINI” Tokumeigakarinoaoshima / CC0 (cropped)
- Preventing Falls in Acrobatic Robots: “Sonny Chiba at the horizontal bar (1961)” 撮影者不明 / Public domain (cropped)
- A Motorcycle Robot That Stays Upright Even When Stopped: “Self-balancing robot” Calleballe04 / CC0 (cropped)
- Bipedal Walking Learned from Passive Walking: “Passive dynamic walker” Stpedraz / CC BY-SA 4.0 (cropped)
- Polymer Actuators as Candidates for Artificial Muscles: “P” European Commission / CC BY 4.0 (cropped)
- Related lab (Nakashima Lab): “Fresh journey” Stefano Mortellaro from Catania, Italy / CC BY 2.0 (cropped)
- Related lab (Hatanaka Lab): “Agricultural drone in use on rice field near Nisoshi, Aomori” Benlisquare / CC BY-SA 4.0 (cropped)
- Related lab (Hayakawa Lab): “Neighborhood of attractor of discretized Lorenz system. XYZ(28) plane” German A. Chernykh & Irina A. Chernykh / CC BY-SA 4.0 (cropped)
- Related lab (Ishizaki Lab): “High voltage transmission towers and lines” Stefan Andrej Shambora (St_A_Sh) / CC BY 2.0 (cropped)
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