Abstract: Nonharmonic excitations are widely distributed in the environment. They can work as energy sources of vibration energy harvesters for powering wireless electronics. To overcome the narrow bandwidth of linear vibration ...

Abstract: In this paper, a powered ankle-foot prosthesis with nonlinear parallel spring mechanism is developed. The parallel spring mechanism is used for reducing the energy consumption and power requirement of the motor, at the ...

Abstract: Commercial springs have linear characteristics. Nevertheless, in some cases, nonlinear behavior (e.g., nonlinear torque) is desired. To handle that, a cam-spring mechanism with a specified cam profile was proposed in our ...

Abstract: Abstract. To reduce the labor load on workers' arms during high-intensity grinding operations and mitigate the risk of work-related musculoskeletal disorders, a novel decoupled passive parallel supernumerary robotic limb ...