The paper studies the distributed optimization problem for a class of nonlinear multiagent systems in presence external disturbances. To solve problem, we need to achieve optimal consensus based on local cost function information and neighboring meanwhile reject disturbance signals modeled by an exogenous system. With convex analysis internal model approach, propose controller heterogeneous agents form continuous-time minimum-phase with unity relative degree. We prove that proposed design...

We address the adaptive stabilization and tracking problems for a class of output feedback canonical systems driven by Wiener noises unknown covariance. Filtered transformation backstepping techniques are employed in stochastic control design. obtain two controllers that guarantee global stability probability vanishing perturbations or input-to-state nonvanishing respectively. The error can converge to small residual set around origin sense mean quartic value.

In this article, an adaptive neural network control scheme is presented for uncertain wheeled mobile robot (WMR) with velocity constraints and nonholonomic constraints. practice, dynamic parameters of the system, which may change in some conditions, are hard to obtain precisely, WMR should be constrained safety. To deal uncertainty robot, networks used approximate unknown robotic dynamics, barrier Lyapunov function guarantee constraint on velocity. The tracking error closed-loop system...

In this paper, we study the distributed Nash equilibrium (NE) seeking problem for a class of aggregative games with players described by uncertain perturbed nonlinear dynamics. To seek NE, each player needs to construct algorithm based on information its cost function and exchanging obtained from neighbors. By combining internal model principle average consensus technique, propose gradient-based players. This paper not only assures NE but also achieves disturbance rejection external disturbances.

In this technical note, we consider the finite-time consensus and tracking problems for a class of nonlinear multiagent systems with directed topology. By using homogeneous function, firstly give protocol high-order linear systems. Then, present protocols strict feedback When state information is not available, convergent observer used to estimate each agent' states, based on observers.

In this paper, a distributed optimization problem is studied for continuous-time multiagent systems with unknown-frequency disturbances. A gradient-based control proposed the agents to achieve optimal consensus estimating unknown frequencies and rejecting bounded disturbance in semi-global sense. Based on convex analysis adaptive internal model approach, exact solution can be obtained system disturbed by exogenous disturbances uncertain parameters.

Abstract This paper presents an approach of integrated guidance and control ( IGC ) design for interception maneuvering targets (evaders). An model with uncertainties in the pitch plane is formulated, and, by adopting a backstepping scheme, adaptive nonlinear developed. Theoretical analysis shows that makes line‐of‐sight LOS rate be input‐to‐state stable ISS respect to target maneuvers missile uncertainties, stability dynamics can guaranteed as well. The numerical simulation confirms...

Electromagnetic steering microrobots can be potentially used in various biomedical applications because these are minimally invasive and accessible intricate microenvironments. In this paper, a robust feedback control approach is presented to precisely conduct the 3-D manipulation of microparticle actuated by self-constructed electromagnetic coil system. A nonlinear high-gain observer designed estimate velocity controlled eliminate measurement noise amplified high gain. Theoretical analysis...

This paper investigates the quantized consensus problem of general linear multiagent systems (MASs) by event-triggered control. A novel distributed control protocol is proposed based on a new dynamic quantizer. Compared with periodical sampling for most existing works consensus, approach can significantly save communication and thus energy resource. It shown that concerned MAS be achieved, Zeno behavior continuous monitoring neighbors' states are avoided. Moreover, it required number...

Although the extrudate swelling, melt fracture, and extrusion deformation of polymer micro-catheters in traditional molding can be eliminated via double-layer gas-assisted (DL-GAE) method, some failure problems are generated under unreasonable process conditions. To ascertain reasons for DL-GAE micro-catheters, influences interaction between double assisted gas on were experimentally numerically studied. Meanwhile, a die experimental system designed constructed. We analyzed influence laws as...

In this work, a vertical landing mechanism of reusable launch vehicle (RLV) is investigated using flexible–rigid coupled dynamics model. The presented model takes into account the four-legged and main body cabin. Flexibilities components in are considered. hydro-pneumatic spring force thrust aftereffect caused by sequential deactivation engine introduced separately. Several simulation cases selected to analyze loads acting on behavior whole RLV system. Simulation results show that...

A novel three-dimensional guidance law based on input-to-state stability (ISS) and high-gain observers for interception of maneuvering targets is proposed. The ISS method introduced to design a achieve robust tracking target. Since in practice the line-of-sight (LOS) rate difficult pursuer measure accurately, observer utilized estimate it. Stability analysis as well simulation results show that presented approach effective.

Summary This paper deals with the robust consensus tracking problem for a class of heterogeneous second‐order nonlinear multi‐agent systems bounded external disturbances. First, distributed adaptive control law is proposed based on relative position and velocity information. It shown that any connected undirected communication graph, solves problem. Then, by introducing novel observer employing backstepping design techniques, constructed only Compared existing results, protocols are in...