Suspending loads decreases load stability but may slightly improve body stability

JOURNAL OF BIOMECHANICS

卷:52

Article

Ackerman, Jeffrey¹  Potwar, Karna¹  Seipel, Justin¹ 

[1] Purdue Univ, Sch Mech Engn, W Lafayette, IN 47907 USA

关键词: Stability;    Running;    Locomotion;    Load carriage;    Backpack suspension;    Vibration isolation;   

DOI  :  10.1016/j.jbiomech.2016.12.001

来源: Elsevier

【 摘 要 】

Here, we seek to determine how compliantly suspended loads could affect the dynamic stability of legged locomotion. We theoretically model the dynamic stability of a human carrying a load using a coupled spring-mass-damper model and an actuated spring-loaded inverted pendulum model, as these models have demonstrated the ability to correctly predict other aspects of locomotion with a load in prior work, such as body forces and energetic cost. We report that minimizing the load suspension natural frequency and damping ratio significantly reduces the stability of the load mass but may slightly improve the body stability of locomotion when compared to a rigidly attached load. These results imply that a highly-compliant load suspension could help stabilize body motion during human, animal, or robot load carriage, but at the cost of a more awkward (less stable) load. (C) 2017 Published by Elsevier Ltd.

【 授权许可】

Free