tailieunhanh - Climbing and Walking Robots part 18

Tham khảo tài liệu 'climbing and walking robots part 18', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | The Rh-1 full-size humanoid robot Control system design and Walking pattern generation 503 Fig. 54. Rh-1 snapshots walking forward. 9. Conclusions Normal bipedal gait is achieved through a complex combination of automatic and volitional postural components. Normal walking requires stability to provide antigravity support of body weight mobility of body segments and motor control to sequence multiple segments while transferring body weight from one limb to another. The result is energy-efficient forward progression. The human gait cycle has been analyzed in order to understand biped walking motion in its main phases single support and double support phases and their properties force reaction cycle time foot knee hip and body motion trajectories. In this way humanoid robot trajectories can be created on the order of human ones. It is demonstrated that the COG human motion follows the inverted pendulum laws at normal walking velocity which is an important fact for maintaining stability while walking. Concerning the facts previously explained it is possible to state that very satisfactory results were obtained thus being a starting point for innumerable investigations in the future. 504 Climbing and Walking Robots w3 RPM Fig. 55. Real joint angular evolution dot dashed black line offline compensated continuous red line and reference blue dashed line . Right leg. time sec w4 RPM time sec w5 RPM time sec Fig. 56. Real dot dashed black line and reference blue dashed line motor angular velocity evolution. Right leg. The Rh-1 full-size humanoid robot Control system design and Walking pattern generation 505 At the moment many improvements and corrections are to be done to the mechanical parts. Due to the great amount of elements working together some unwanted clearances and movements in the mechanical structure of the robot may appear. Furthermore the robot is in its second evaluation stage and the number of elements that make up the robot must be decreased either by .

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