Energetic consequences of walking like an inverted pendulum: step-to-step transitions

AD Kuo, JM Donelan, A Ruina - Exercise and sport sciences …, 2005 - journals.lww.com
It costs several times the metabolic energy for a human to walk as it does to bicycle the same
distance. Walking is often likened to the motion of two coupled pendula, because the stance …

Efficient bipedal robots based on passive-dynamic walkers

S Collins, A Ruina, R Tedrake, M Wisse - Science, 2005 - science.org
Passive-dynamic walkers are simple mechanical devices, composed of solid parts
connected by joints, that walk stably down a slope. They have no motors or controllers, yet …

[BOOK][B] Feedback control of dynamic bipedal robot locomotion

ER Westervelt, JW Grizzle, C Chevallereau, JH Choi… - 2018 - taylorfrancis.com
Bipedal locomotion is among the most difficult challenges in control engineering. Most
books treat the subject from a quasi-static perspective, overlooking the hybrid nature of …

A three-dimensional passive-dynamic walking robot with two legs and knees

SH Collins, M Wisse, A Ruina - The International Journal of …, 2001 - journals.sagepub.com
The authors have built the first three-dimensional, kneed, two-legged, passive-dynamic
walking machine. Since the work of Tad McGeer in the late 1980s, the concept of passive …

Bifurcations and chaos in passive dynamic walking: A review

S Iqbal, X Zang, Y Zhu, J Zhao - Robotics and Autonomous Systems, 2014 - Elsevier
Irrespective of achieving certain success in comprehending Passive Dynamic Walking
(PDW) phenomena from a viewpoint of the chaotic dynamics and bifurcation scenarios, a lot …

Energetics of actively powered locomotion using the simplest walking model

AD Kuo - J. Biomech. Eng., 2002 - asmedigitalcollection.asme.org
We modified an irreducibly simple model of passive dynamic walking to walk on level
ground, and used it to study the energetics of walking and the preferred relationship …

A simple model of bipedal walking predicts the preferred speed–step length relationship

AD Kuo - J. Biomech. Eng., 2001 - asmedigitalcollection.asme.org
We used a simple model of passive dynamic walking, with the addition of active powering on
level ground, to study the preferred relationship between speed and step length in humans …

A collisional model of the energetic cost of support work qualitatively explains leg sequencing in walking and gallo**, pseudo-elastic leg behavior in running and the …

A Ruina, JEA Bertram, M Srinivasan - Journal of theoretical biology, 2005 - Elsevier
Terrestrial legged locomotion requires repeated support forces to redirect the body's vertical
velocity component from down to up. We assume that the redirection is accomplished by …

Multiple walking speed–frequency relations are predicted by constrained optimization

JEA Bertram, A Ruina - Journal of theoretical Biology, 2001 - Elsevier
A person constrained to walk at a given speed v on a treadmill, chooses a particular step
frequency f and step length d= v/f. Testing over a range of speeds generates a speed …

Modeling and control of legged robots

PB Wieber, R Tedrake, S Kuindersma - Springer handbook of robotics, 2016 - Springer
The promise of legged robots over wheeled robots is to provide improved mobility over
rough terrain. Unfortunately, this promise comes at the cost of a significant increase in …