This application belongs to the field of collaborative
robot control technology, specifically disclosing a human-
machine compliant interactive stability control method and
system for achieving stiffness jumps. The method includes: real-time acquisition of the collaborative
robot's end-
effector interaction force and end-
effector Cartesian velocity input to a
fuzzy inference function to obtain human intention coefficients; calculation of the desired total stiffness and desired total damping at the current moment based on the human intention coefficients, and
decomposition them into time-varying components and time-invariant basis components, respectively; employing an energy tank method to ensure
system stability, calculating the
filling rate of the energy tank based on the power dissipated by the basis damping when the energy tank is not full; if the energy tank is not depleted, using an
energy exchange control method to replenish the collaborative
robot with the energy required for time-varying stiffness and time-varying damping, and obtaining the desired velocity, desired position, and
joint angle of the collaborative robot at the next moment. This method can dynamically and rapidly adjust
admittance parameters according to the operator's intentions while ensuring the collaborative robot
system remains strictly passive.