基于积分鲁棒的电液负载模拟器渐近跟踪控制

doi:10.7527/S1000-6893.2016.0152

Abstract

Abstract:

Electro-hydraulic load simulator (EHLS) is a typical electro-hydraulic force system, in which various nonlinear properties and modeling uncertainties (especially nonlinear frictions) exist. With the higher demand for the tracking performance of electro-hydraulic force system, it is difficult for the traditional linear control strategy to meet the high-performance demand of loading system, and thus the advanced nonlinear control strategy is required urgently. To overcome the above problems, a nonlinear mathematic model, synthesized with a continuous differentiable friction model, is established. Meanwhile, a new control method, named as a robust integral of the sign of the error, is also designed based on Lyapunov stability theory. The control strategy proposed can eliminate the influence of the uncertainties of the model and guarantee asymptotic output tracking performance under the motion disturbance of aircraft actuator. Comparative experimental results are obtained to verify the high-performance of the proposed control strategy.

Key words: electro-hydraulic load simulator (EHLS), continuous differentiable friction model, robust control, nonlinear control, modeling uncertainties, Lyapunov functions

CLC Number:

V242

YUE Xin, YAO Jianyong. Integral robust based asymptotic tracking control of electro-hydraulic load simulator[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(2): 420269-420278.

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Integral robust based asymptotic tracking control of electro-hydraulic load simulator

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