Design of a Variable Stiffness Spring with Human-Selectable Stiffness

Chase W. Mathews,David J. Braun,Chase W. Mathews,David J. Braun

Springs are commonly used in wearable robotic devices to provide assistive joint torque without the need for motors and batteries. However, different tasks (such as walking or running) and different users (such as athletes with strong legs or the elderly with weak legs) necessitate different assistive joint torques, and therefore, springs with different stiffness. Variable stiffness springs are a ...