dynamically stable biped robots mimicking human locomotion have received significant attention over the last few decades. formerly, the existence of stable periodic gaits for straight walking of passive biped walkers was well known and investigated as the notion of passive dynamic walking. this study is aimed to elaborate this notion in the case of three dimensional (3d) walking and extend it f...

Dynamically stable biped robots mimicking human locomotion have received significant attention over the last few decades. Formerly, the existence of stable periodic gaits for straight walking of passive biped walkers was well known and investigated as the notion of passive dynamic walking. This study is aimed to elaborate this notion in the case of three dimensional (3D) walking and extend it f...

Brian A. McCann Abstract A passive dynamic walker is a mechanism which uses gravitational energy to walk down an incline with a periodic gait. Simple passive dynamic walkers have an inner and outer set of equal length legs which are pinned together at the hip. To prevent tripping, these walkers require alternating “stepping stones” for the feet to walk on top of. My senior design project involv...

Roller-Walker is a leg-wheel hybrid mobile robot using a passive wheel equipped on the tip of each leg. The passive wheel can be transformed into sole mode by rotating the ankle roll joint when Roller-Walker walks on a rough terrain. This paper discusses energy efficiency of locomotion in wheeled mode. We define a leg trajectory to produce forward straight propulsion and discuss the relationshi...

Abstract   The simple passive dynamic walker can walk down a shallow downhill slope with no external control or energy input. Nevertheless, the period-one gait stability is only possible over a very narrow range of slopes. Since the passive gaits are extremely sensitive to slope angles, it is important to use a control strategy in order to achieve a wide range of stable walking. The computed to...

The purpose of this study is to extend the three-dimensional (3-D) passive dynamic biped walker to a 3-D dynamic biped walker, i.e., a walker that can walk on a horizontal surface based on a passive dynamic walking. A new prototype of 3-D biped walker called RW04, which has telescopic knee joints, was developed and its ability for walking was validated through some experiments. A sinusoidal osc...

Humanoid and walking robots have been widely developed and their use in human environments is not far out of reach. The main problems in practical applications of machine walking are energy consumption, complex control and design, and high cost. The main feasible indoor application of a walking machine is that of a humanoid robot as a companion, nurse, guide, or information desk or reception cl...

Passive dynamic bipedal walking (PDW) is an attractive topic not only for robotics field but also the other scientific fields, i.e. physics and biology. In order to clarify its mechanism of walking, many researchers have developed various PDW machines. We also have developed several 3D PDW with flat feet and ankle springs. However there are no researches on the measurement of 3-D PDW gait, whic...