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Integral robust based asymptotic tracking control of electro-hydraulic load simulator
Received date: 2016-03-28
Revised date: 2016-05-16
Online published: 2016-05-30
Supported by
National Natural Science Foundation of China (51305203); China Postdoctoral Science Foundation (2015T80553); Jiangsu Planned Projects for Postdoctora l Research Funds (1302002A)
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.
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 . DOI: 10.7527/S1000-6893.2016.0152
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