Frequently Asked Questions
Musculoskeletal or biomechanical simulations aim to simulate movement of humans and animals. The main difference with simulation tools used in robotics is that musculoskeletal simulators include musculotendon actuators, which mimic the way in which muscles and tendons produce forces in nature. In addition, musculoskeletal simulators typically use non-rigid or force-based contacts to emulate the effect of soft-tissue.
The performance advantage of Hyfydy over OpenSim is mostly the result of using optimized algorithms and efficient software architecture. Hyfydy uses a custom algorithm to evaluate musculotendon dynamics that is orders of magnitude faster than the implementations in OpenSim. In addition, Hyfydy is optimized for use with small integration time steps, which are typically required with musculoskeletal simulations. These elements combined lead to a speedup of 50-100x over OpenSim, depending on which model is used.
Hyfydy is currently available for research applications only. Please contact us if you are interested in a commercial application.