The invention relates to a rigid-flexible trans-
mass self-adaptive
robot force position and rigidity collaborative optimization method and
system, and relates to the technical field of
robot control, and the method comprises the steps: firstly, carrying out the
linearization processing of a
robot dynamic model through a semi-implicit
integral method, and obtaining a
robot dynamic model; and in combination with an
extended Kalman filter, stiffness parameters in the contact operation process are estimated in real time, a
dynamic stiffness sensing model is constructed, and the
system response capability is effectively improved. Then, a rigidity parameter is embedded into a
Hertz contact model, the dependence of a traditional model on
prior information of a contact surface is broken through, a dynamic
interaction model between the robot and an operation object is established, and high-precision real-time sensing of
normal force and
friction force is achieved. And finally, under a
nonlinear model predictive control framework, multi-dimensional physical constraints are constructed based on the
contact force, the position and the contact rigidity, an
optimal control model is obtained, control input is dynamically and adaptively updated through rolling optimization, and the stability and the control precision of the robot in rigid-flexible heterogeneous contact operation are improved.