The article describes modelling of the monopedal robot with the application of the numerical method for calculating kinematics. The first part presents a short review of the literature on monopedal robots and the theory of such designs. Due to the complexity of the natural solutions of the bipedal locomotion, the monopedal alternative simplifies the problem, by limiting its scope to the pulse movement in one axis- as required by jumping. In the subsequent part, basic mathematical and kinematic relations connected with a chosen designs. The model was based on a rigid quadrangle driven by a four-bar linkage. The effect was a set of vector equations, required to calculate its kinematics. Due to the complexity of the design, it could not be calculated using traditional analytical methods. The prepared kinematic structure was simulated using the numerical method to give the basis for the future experimental tests. The mathematical model was solved in the Wolphram Mathematica environment. Its main purpose was to analyse the movement of the final link that rests on the ground. The results from the simulation were compared to the movement parameters derived from a model designed in CAD software to verify its correctness. All values of links length and starting angular position, required to calculate the model, were taken from the said CAD project.
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