In order to implement the uniformload distribution of the power-split transmission system, a pseudostatic model is built. Based on\nthe loaded tooth contact analysis (LTCA) technique, the actual meshing process of each gear pair is simulated and the fitting curve of\ntime-varying mesh stiffness is obtained. And then, the torsional angle deformation compatibility conditions are proposed according\nto the closed-loop characteristic of power flow, which will be combined with the torque equilibrium conditions and elastic support\nconditions to calculate the transfer torque of each gear pair. Finally, the load-sharing coefficient of the power-split transmission\nsystem is obtained, and the influences of the installation errors are analyzed.The results show that the above-mentioned installation\nerrors comprehensively influence the load-sharing characteristics, and the reduction of only one error could not effectively achieve\nperfect load-sharing characteristics. Allowing for the spline clearance floating and constrained by the radial spacing ring, the\ninfluence of the floating pinion is analyzed. It shows that the floating pinion can improve the load-sharing characteristics. Through\nthe comparison between the theoretical and related experimental data, the reasonability and feasibility of the above-proposed\nmethod and model are verified.
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