The invention discloses a physical man-
machine interaction contact safety protection method and
system based on a Maxwell model, and the method comprises the steps: building a
human body physical model, and expressing the effective
mass, elastic coefficient and maximum allowable
impact force physical attributes of each part of a
human body;
kinematics,
statics and dynamics models of the
robot are established, and the relation between the joint space displacement, speed, torque and
mass of the
robot and the
tail end speed,
tail end rigidity and effective
mass is expressed; a physical man-
machine interaction model is established, and the relation between the joint displacement, speed and mass of the
robot and the physical man-
machine interaction
impact force is expressed; physical man-machine interaction contact characteristics are calculated, and
impact duration, the maximum impact force, a contact damping coefficient and a
recovery coefficient are calculated; and 5, robot safety protection measures are formulated, and the safety of physical man-machine interaction is guaranteed. According to the method, the solution of a
Hertz contact stiffness parameter is avoided, the safety of physical man-machine interaction can be evaluated through the impact duration and the maximum impact force, and a theoretical basis is provided for the design of a robot man-machine interaction
system.