RoboBoom
TheIHMC· August 25, 2017· 53:31

Episode 44 Jerry Pratt discusses the evolution and future of humanoid robots and bipedal walking

Jerry Pratt, senior research scientist and robotics group leader at IHMC, discusses the evolution and future of humanoid robots and bipedal walking with STEM Talk hosts Don Carnegie and Ken Ford.

In this talk

  1. 5:07

    From early inventions to legged robots

    Pratt traces his interest in building from childhood electronics projects and a knock-code door lock to robotics research at MIT. There, he developed Spring Turkey and Spring Flamingo, using spring-based actuators to improve force control and walking over uneven ground.

  2. 17:33

    How robots balance and why they need legs

    Pratt describes three ways to recover balance: shifting pressure under the foot, using body motion such as swinging the arms, and taking a step. He argues that two-legged robots could navigate human-built spaces without costly changes, though actuators still limit their speed and performance.

  3. 23:19

    Natural dynamics, running, and exploration

    Pratt explains that robot mechanisms can provide some of the stability and motion themselves, reducing the need for constant feedback. IHMC's planar elliptical runner demonstrates stable running with one motor and no sensors, while humanoid robots such as Atlas and Valkyrie are designed for practical tasks like reaching controls in hazardous places.

  4. 32:46

    What still holds humanoid robots back

    Pratt says robots lack the dense tactile sensing humans use to understand contact and terrain, and that dexterous hands remain difficult because they need compact, strong actuators and must withstand impacts. He also identifies muscle-like actuators as a key need for faster, more capable humanoids.

  5. 44:54

    Learning to walk and putting robots to work

    Pratt expects deep reinforcement learning to become useful for bipedal walking, with skills built gradually from standing and weight-bearing to taking steps. He points to warehouse and factory robots as commercial opportunities, while home tasks such as folding laundry remain hard because they demand flexible handling.

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