Abstract：As a kind of commonly used aerospace vehicle effector, air rudder has nonlinear characteristics such as clearance and friction. Its nonlinear modeling is an iterative process and it is necessary to select a suitable model to reflect its true dynamic characteristics. To this end, this paper uses the Coulomb friction model and the Stribeck friction model to establish the nonlinear dynamics model of the rudder system with clearance and friction,and uses the least square nonlinearfitting method and the genetic algorithm to identify the unknown parameters in the model using experimental data. The results show that,compared with the Stribeck friction model,the Coulomb friction model can more accurately reflect the friction torque in the actual system,and both parameter identification methods can effectively complete the identification of unknown parameters.
李雨青，南宫自军，刘博. 空气舵系统摩擦模型及参数识别方法研究[J]. 振动与冲击, 2021, 40(22): 98-103.
LI Yuqing，NANGONG Zijun，LIU Bo. Friction model and parameter identification method for an air rudder system. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(22): 98-103.
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