..., developing a disturbance observer-based adaptive integral robust control ( DOAIRC ) method. Findings Experimental comparisons demonstrate that the proposed method has strong immunity under flow switching and time-varying external disturbances, effectively overcoming the forward channel’s variable gain...

... method. Design/methodology/approach To ensure that the tracking error satisfies the prescribed performance, the authors adopt an error transformation function method. A control scheme based on the neural network and high-order disturbance observer is designed to guarantee the boundedness...

... disturbance, structure fault and actuator fault. Design/methodology/approach The automatic carrier landing task is resolved into the glide path tracking problem and attitude tracking problem. The disturbance observer-based adaptive sliding mode control scheme is proposed for system stabilization...

..., a 6-Degree of Freedom (DOF) dynamic model of rigid spacecraft with dead-zone input, unknown external disturbances and parametric uncertainty is derived. Second, a super-twisting-like fixed-time disturbance observer (FTDO) with strong robustness is developed to estimate the lumped disturbances in fixed...

..., a predefined-time controller is derived. To compensate the external disturbances or model uncertainties, a fixed-time disturbance observer is developed, and its convergence time can be defined as a prior control parameter. Finally, the stability of the proposed sliding mode surface and the controller can...

...Nigar Ahmed; Mou Chen Purpose The purpose of this research paper is to design a disturbance observer-based control based on the robust model reference adaptive backstepping sliding-mode control for attitude quadrotor model subject to uncertainties and disturbances. Design/methodology/approach...

...Nigar Ahmed; Abid Raza; Rameez Khan Purpose The aim of this paper is to design a nonlinear disturbance observer-based control (DOBC) method obtained by patching a control method developed using a robust adaptive technique and a DO. Design/methodology/approach For designing a DOBC, initially...

...Jinglong Liu; Zhonghua Wu; Xiaowen Xing; Qizhi He Purpose The purpose of this paper is to find an omnidirectional robust gust response stabilization (GRS) scheme with anti-disturbance and state-limited features. Design/methodology/approach Disturbance observer and barrier Lyapunov techniques...

...Mingwei Sun; Zenghui Wang; Zengqiang Chen Purpose – This paper aims to present a fast, economical and practical attitude control design approach for flight vehicles operating within wide envelopes. Design/methodology/approach – Based on a linear disturbance observer, an enhanced...