Analysis of perturbes frictional contact problems

  • Nguyen Tien The

    University of Transport Technology, No 54 Trieu Khuc Street, Ha Noi, Vietnam
  • Do Hai Quan

    Viettel Research and Development Institute, Hoa Lac Hi-tech Park, Ha Noi, Vietnam
  • Pham Ba Viet Anh

    Hanoi University of Natural Resources and Environment, No 41A Phu Dien Street, Ha Noi, Vietnam
  • Nguyen Luong Thien

    Space Technology Institute - Vietnam Academy of Science and Technology, No 18 Hoang Quoc Viet Street, Hanoi, Vietnam
Email: nlthien@sti.vast.vn
Từ khóa: Perturbe, frictional contact, Fuzzy Logic Controller, Homotopy Perturbation and Projection

Tóm tắt

Generally, friction/perturbation compensation is an important issue in high-precision motion control applications. In particular, when the system under control undergoes low-speed or reversal motions, the friction force and external perturbations will degrade motion accuracy. In this paper, we study analysis of perturbed frictional contact problems. Its shows how homotopy perturbation techniques and projection can be integrated in control-based approach to reanalyze the perturbed frictional contact problems. Thus, the perturbed non linear problem is decomposed into perturbed linear problems dedicated to each component in contact. Each solution of perturbed linear problems is approximated. A numerical application is performed to verify the efficiency and the robustness of the proposed method. The proposed method has been developed to be compatible within a context of multiple sampling (such as parametric analysis or design of experiments). The proposal relies on a control based method currently used in automation domain. A Fuzzy Logic Controller (FLC) is designed to link the normal gaps identified between the bodies and the normal contact pressures applied at the interface. Finally, a design of experiments is proposed to quantify the effects of input perturbations on output mechanical data

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