This article proposes an output-feedback fixed-time trajectory tracking control methodology for hypersonic flight vehicles subject to asymmetric output constraints. In contrast the state of art, most distinguishing feature our design lies in avoiding using conventional recursive methods (e.g., backstepping technique, dynamic surface control, etc.) and not relying on full-state availability. vel...

Aiming at the problems of difficult attitude stabilization, low landing accuracy, large external disturbance and slow dynamic response during quadrotor on wave glider, an improved series active rejection control method for is proposed. The controller with inner-loop angular velocity outer-loop position based (ADRC) designed by analyzing model quadrotor. A tracking differentiator (TD) adopted to...

This paper focuses on the accurate path following problem for an underactuated unmanned surface vehicle with uncertainties and environment disturbances. The proposed scheme can be divided into guidance loop control loop: in loop, law is utilized to calculate desired yaw angle, as well estimating unknown currents sideslip angle simultaneously; a novel robust developed by enhanced trajectory line...

In this paper, we propose an accelerated adaptive backstepping control algorithm based on the type2 sequential fuzzy neural network (T2SFNN) for microelectromechanical system (MEMS) gyroscope with deadzone and constraints. Firstly, mathematical model of MEMS is established to perform dynamical analyses controller design. Then, phase diagrams Lyapunov exponents are presented reveal its chaotic o...

In this paper we obtain a homogeneous, continuous, quadratic and strict Lyapunov function for Levant’s Second Order Differentiator. Since its derivative is a non quadratic, discontinuous, homogeneous form its negative definiteness is determined using some new inequalities, providing coarser bounds than Young’s inequalities.

An analysis of the influence of motivation on the ZPD is being carried out. To investigate the impact of motivational factors on the ZPD the inclusion of a motivation differentiator layer into the Ecolab [11] is proposed. The mechanisms and values to measure the motivational states of the learners and scaffold the motivational strategies to adjust them to individual pupils are outlined. The mai...

This study proposes a tele-aiming control strategy for the ground reconnaissance robot to track maneuvering target rapidly in presence of dynamic uncertainties, sensory measurement noises, and time-varying external disturbances. First, trajectory generated by human–computer interaction (HCI) device is filtered with tracking differentiator recursive average filter. Second, inertial impact force ...

Summary This article is concerned with the distributed leader‐following formation control for nonlinear multi‐agent systems (MASs) subject to compound disturbances. Three aspects of objective: control, collision avoidance and connectivity preservation are achieved by designed controller composed three laws. The law developed based on barrier Lyapunov function backstepping method, which can pres...