We propose an improved Kane dynamic model theory for the 7-DOF modular robot in this paper, and the model precision is improved by the improved function T′it. We designed three types of progressive modular joints for reconfigurable modular robot that can be used in industrial robot, space robot, and special robot. The Kane dynamic model and the solid dynamic model are established, respectively, for the 7-DOF modular robot. After that, the experimental results are obtained from the simulation experiment of typical task in the established dynamic models. By the analysis model of error, the equation of the improved torque T′it is derived and proposed. And the improved Kane dynamic model is established for the modular robot that used T′it. Based on the experimental data, the undetermined coefficient matrix is five-order linear that was proved in 7-DOF modular robot. And the explicit formulation is solved of the Kane dynamic model and can be used in control system.
Based on joint parameter and robot configuration, the Lagrange and Kane dynamics modeling are established for the 4-DOF modular industrial robot in this paper. The planning mission was performed in the Lagrange dynamics modeling and Kane dynamics modeling by simulation software. The simulation results shown that the Kane model is better than the Lagrange model in the 4-DOF robot. And the Kane model has better execution effect when the joint torque is greater.
Abstract. We propose a new algebraic configuration description method (ACDM) for the modular robot. The ACDM can describe each mechanical configuration in the robotic configuration parameters, and make up for the inadequacy of D-H method in multiple configuration. The algebraic configuration description method support complicated calculation about the parameters in joint level. The configuration algebraic expression and kinematic model are established in this paper for the modular robot. And kinematical modeling and simulation results show that the algebraic configuration description method is effective.
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