Abstract
With the demand for energy efficiency in electrohydraulic servo systems (EHSS), the separate meter-in and separate meter-out (SMISMO) control system draws massive attention. In this paper, the SMISMO control system is decoupled completely into two subsystems by the proposed indirect adaptive robust dynamic surface control (IARDSC) method. Indirect adaptive robust control (IARC) is proposed to address the internal parameter uncertainties and external disturbances. Dynamic surface control (DSC) is utilized in the design procedure of IARC to deal with the inherent ‘explosion of terms’ problem. The proposed IARDSC simplifies the design procedure and decreases the computational cost of the controller. Besides, a faster parameter estimation scheme is proposed to adapt to the parameter change for a better estimation performance. Finally, experimental results show that the proposed IARDSC can achieve a good parameter estimation and trajectory tracking performance. Meanwhile, two energy saving techniques are discussed.
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This work is supported by National Natural Science Foundation of China under Grant No. 51675041.
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Chen, G., Wang, J., Wang, S. et al. Indirect adaptive robust dynamic surface control in separate meter-in and separate meter-out control system. Nonlinear Dyn 90, 951–970 (2017). https://doi.org/10.1007/s11071-017-3704-x
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DOI: https://doi.org/10.1007/s11071-017-3704-x