In this paper, a nonlinear generalized system of variable order (VO) of fractional differential
equations (FDEs) based on the RD β i (x) Riemann–Liouville's operators such that 0< β 1< β …

Mobile robots are intelligent machines that can move and perform tasks in different
environments. The key factor enabling the autonomy of mobile robots lies in the reliability …

This work introduces a novel adaptive fixed-time control strategy for nonlinear systems
subject to external disturbances. The focus pertains to the introduction of the fixed-time …

This paper addresses three significant challenges in controlling robot manipulators:
improving response time, minimizing steady-state errors and chattering, and enhancing …

In this paper, adaptive disturbance observer (ADO)-based nonlinear tracking control scheme
is developed for a mini excavator proton exchange membrane fuel cell (PEMFC) air feed …

This study introduces an optimal finite-time backstep** sliding mode guidance law,
leveraging an adaptive continuous barrier function to examine the interceptor-target …

In this article, we present a new fixed-time observer (FTO) with time delay estimation (TDE)-
based model-free fixed-time sliding mode for the problem of robust walking of the NAO …

To improve the control precision and stability of Direct-Drive Permanent Magnet Linear
Motor (DPMLM) with frictional nonlinearity and uncertain disturbances at a low speed, an …

Purpose Assisted training using upper limb rehabilitation robots is beneficial for flaccid
paralysis patients in recovering their functional abilities. In the assisted training mode, the …