<p>A strategy for the design of robust control tracking electromechanical systems based on

Traditional beam tracking has severe performance loss under the high mobility and narrow scenario. To alleviate degradation, we propose an adaptive beamwidth control for millimeter wave tracking. Using particle filter, perform tracking, i.e., which is to estimate channel gain angle-of-arrival (AoA). Based on updated standard deviation of AoA, adequate set via partial activation antenna array. S...

In this paper, an adaptive fuzzy control scheme is proposed for a class of perturbed strict-feedback nonlinear systems with unknown discrete and distributed time-varying delays, and the proposed design method does not require a priori knowledge of the signs of the control gains.Based on the backstepping technique, the adaptive fuzzy controller is constructed. The main contributions of the paper...

in recent years, underactuated nonlinear dynamic systems trajectory tracking, such as space robots and manipulators with structural flexibility, has become a major field of interest due to the complexity and high computational load of these systems. hierarchical sliding mode control has been investigated recently for these systems; however, the instability phenomena will possibly occur, especia...