(1) The dynamic model of tower crane system is established. It is the most important work to design the positioning and anti swing system of tower crane. Firstly, based on the two-dimensional model of crane hoisting, a comprehensive force analysis is carried out; secondly, the crane system is modeled according to the Lagrange equation in analytical mechanics, and the nonlinear dynamic equation of the crane system is established; finally, through reasonable simplification, the differential equation of the anti swing system of tower crane is obtained, and the characteristics of the system model are analyzed. It provides a theoretical basis for the subsequent verification of the effectiveness of tower crane positioning and anti swing controller.<br>
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