Biomechanics is the study of the mechanical principles governing biological systems, analysing forces, motion and structure in living organisms. In robotics it informs the design of actuators, limbs and gaits that emulate or assist biological movement, bridging physiology and mechanical engineering. It supplies the models of kinematics and dynamics used to make legged, humanoid and wearable machines move efficiently and safely.
Overview
- Biomechanics characterises how organisms generate and resist forces: muscle activation, joint torque, ground reaction and energy storage in tendons. Roboticists borrow these models to build machines that move with comparable efficiency and robustness.
- The field underpins Legged Locomotion and Humanoid Robot design, where understanding balance, compliance and gait is essential. Compliant elements such as the Series Elastic Actuator are direct engineering analogues of biological tendons, enabling safer interaction and energy recycling.
- Beyond legged systems, biomechanics drives assistive devices: an Exoskeleton or Rehabilitation Robotics platform must match human joint motion and forces to augment rather than fight the wearer.
Mechanisms
- Musculoskeletal modelling of joints, links and force-generating elements.
- Gait and posture analysis describing periodic, stable locomotion.
- Compliance and impedance modelling that informs Force Control and Torque Control.
- Energy-efficiency analysis of motion using passive dynamics.
- Mapping desired end-effector or foot trajectories via Inverse Kinematics.
Applications
- Designing balanced, efficient gaits for Legged Locomotion.
- Building Humanoid Robot platforms that interact safely with people and environments.
- Engineering Exoskeleton and Rehabilitation Robotics devices that assist movement.
- Informing prosthetics, sports analysis and ergonomic design.