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		题名	作者	年代	出处	被引量
	1	Adaptive nonsingular fast terminal sliding mode control for underwater manipulator robotics with asymmetric saturation actuators显示文摘In this paper,an adaptive nonsingular fast terminal sliding mode control(ANFTSMC)is proposed for underwater manipulator robotics with asymmetric actuator saturations and unknown time-varying(TV)external disturbances.Firstly,the nonsingular fast terminal sliding mode(NFTSM)control scheme is conducted for the underwater manipulator robotics,which guarantees the boundedness of all the signals in the control system.Secondly,the adaptive method and the smooth hyperbolic tangent(tanh)function are introduced to address the unknown TV external disturbances and the input saturation errors.Thus the prior knowledge about the upper bounds of the system uncertainties is not needed in this paper.To deal with the nonlinear asymmetric input saturation issue,a Gaussian error function is employed in the asymmetric saturation module so that the discontinuous input signals can be transformed into smooth forms.Thirdly,the rigorous mathematical verification is conducted to demonstrate the stability and finite-time convergence of the closed-loop control system via the Lyapunov theory.Finally,numerical simulations are performed on a two-link underwater manipulator robotic system to illustrate the effectiveness of the proposed controller.	Zeng cheng ZHOU Guoyuan TANG Hui HUANG Lijun HAN Ruikun XU	2020	Control Theory and Technology2020，18，1：	2

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