Terminal Multi-Constrained Finite Time Sliding Mode Guidance Law Based on Truncation Function for Hypersonic Vehicle

Cui, Shenghui; Hu, Cheng; Bai, Xinbin; Zhang, Shifeng

doi:10.1007/978-981-16-6640-7_2

Cited by 2 publications

(2 citation statements)

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“…SMC is insensitive to changes in system parameters and perturbations compared to other controls, and has good adaptability and robustness, making it widely used in military, aviation, transportation 17,18 and other nonlinear control elds. However, the SMC will cause "chattering" phenomenon when controlling the input because of the existence of sliding mode.…”

Section: Introducitionmentioning

confidence: 99%

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Sliding mode control of the hydraulic swing joint based on nonlinear disturbance observers

Yang

Zhang

et al. 2023

Preprint

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Due to the nonlinearity of the hydraulic position servo system and its model uncertainty, which makes it more difficult to establish an accurate mathematical model, while a single control algorithm can no longer meet the control accuracy and demand of the hydraulic servo system. In order to better study the position control method of hydraulic swing joint and improve the control accuracy, this paper attempts to address the position servo control problem of hydraulic swing joint by proposing a sliding mode control approach in which, based on nonlinear disturbance observers and the effectiveness of the algorithm is verified by AMESim-Matlab/Simulink co-simulation. Firstly, this paper briefly describes the three-dimensional model of hydraulic swing joint and analyzes the working principle of the position servo system of hydraulic swing joint. Secondly, the mathematical model of the hydraulic swing joint position servo system was established, the control algorithm was designed, and the stability of the control algorithm was proved using Lyapunov theory. Thirdly, combining the rich component model library of AMEsim platform and the powerful numerical computing capability of Matlab platform, the co-simulation of the two platforms is realized by creating S-Function interface in Matlab platform. Finally, the validity of the proposed sliding mode control strategy based on the nonlinear disturbance observers (NDOB-SMC) strategy is verified through experimental analysis of co-simulation, and compared with the traditional PID as well as the traditional sliding mode control (SMC) algorithm, which is found to possess superior control accuracy and practical application capability.

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Section: Introducitionmentioning

confidence: 99%

“…( 22) to obtain: 23 Meanwhile, it follows from Lemma 2 that will converge to zero in nite time, so the estimate of the composite disturbance d 1 (t) can be obtained as Eq. (17).…”

mentioning

confidence: 99%