Much recently, an internal model approach from output regulation theory has been adopted to solve the speed tracking control problem of permanent magnet synchronous motor (PMSM) system on simulation level. A striking advantage this is that it can achieve multiple goals including trajectory tracking, disturbance rejection, and robustness simultaneously. This article further studies a position PMSM under nonlinear load torque disturbance. based feedback controller proposed, which exact allow...

Ground effect on rotary aircraft has been studied for many decades. Although a large body of research results is now available conventional helicopters, this topic just beginning to receive attention in the unmanned aerial vehicle community, particularly small size UAVs. The objective paper assess applicability widely-used ground model, developed middle last century, predicting UAV. particular employed work, Draganflyer X8, actuated by 8 propellers arranged 4 coaxial pairs quadrotor...

To solve the reactive power sharing issue of conventional droop control method, communication is commonly used, especially in networked microgrids. However, there are still many occasions where has not been established advance. In such cases, wireless strategy based on virtual impedance optimization can be applied. By designing and optimizing controller impedance, global error microgrid minimized. Thus, performance method improved accordingly. original considered different capacities...

In this paper, we propose a novel inertial-assisted visual odometry system intended for low-cost micro aerial vehicles (MAVs). The sensor assembly consists of two downward-facing cameras and an inertial measurement unit (IMU) with three-axis accelerometers/gyroscopes. Real-time implementation the is enabled by embedded via important features: firstly, simple pixel-level algorithms are integrated in low-end FPGA accelerated pipeline combinational logic techniques; secondly, fast...

Summary In this article, the issue of developing an adaptive event‐triggered neural control for nonlinear uncertain system with input delay is investigated. The radial basis function networks (RBFNNs) are adopted to approximate terms, where time‐varying approximation errors considered into system. However, RBFNNs' weight vector extended, which may cause computing burdens. To save network resource, burden caused by handled developed strategy. Furthermore, in order compensate effect delay,...

In this paper, a sliding mode reconfigurable control algorithm is developed to deal with nonlinear aircraft system partial loss fault or total failure of actuators. Sliding controllers for redundant actuators are combined those regular reconfigure the autonomously effectiveness information The tolerability faults defined as limit under conditions. stability proved Lyapunov method. has been validated on simulation longitudinal Boeing 747-100/200 airplane model.

This paper studied the path following problem for an underactuated vessel sailing in restricted waters with varying water depths. A novel high-gain extended state observer based adaptive sliding mode control scheme was proposed. The line-of-sight guidance law designed according to kinematics horizontal plane, which achieved accurate spite of time-varying sideslip angles. In system, a angle calculated serve as reference input yaw tracking system. system designed, can deal model uncertainties...

In this paper, a sliding mode reconfigurable control algorithm without dedicated fault detection and identification module is developed for nonlinear aircraft systems with partial loss or total failure such as stuck floating. The redundant actuators are integrated the regular in controller seamlessly when faults failures occur actuators. This method monitors surface to decide if actuator should be activated. stability of system was proved by using Lyapunov method, effectiveness validated...

A new dexterous hand is designed and produced. The shape structure of the described, focused on analyzing layout tendons optimization joint radius. Furthermore, a single finger controlled by Fuzz-PID with model compensation good control precision achieved. Through study control, master-slave dextrous realized simulating movement human cyber-glove.

Levitation controllers have become a litmus test for control algorithms. A new algorithm that simultaneously optimizes time and frequency performance is applied to linearized model of levitation system. It shown the resulting presents superior performances other controls algorithms same

The paper studies the path following of a ship sailing in restricted waters based on an output feedback control, which consists state control law and extended updated-gain high-gain observer. According to separation principle, observer are designed separately. is robust guaranteed cost method assuming that system states measurable. Sufficient conditions given for linear uncertain system. observer, whose gains updated according nonlinear functions available evaluation errors, used reconstruct...

A conventional variable universe fuzzy proportional–integral–derivative control approach is widely used for semi-active in mechanical engineering. The performance of the controller dependent on an optimal selection parameters contracting–expanding factors. An improved algorithm developed this study where these are automatically determined real-time according to error controlled responses and its change rate based logic control. proposed method numerically experimentally illustrated with a...

Strip coiling temperature is one important parameter of performance hot rolled strip, and its laminar cooling control system highly nonlinear. The combination PID fuzzy was put forward a self-tuning controller built through the rules based on inapplicability time-lag, time-change, big-inertia, nonlinearity problems difficulty parameters adjusting, three can be adjusted adaptively online. It presents for nonlinear, time-varying fuzzy-PID controller. simulation shows that static dynamic...

This study proposes a nonlinear min-cost-pursued swapping dynamic (NMSD) system to model the evolution of selfish routing games on traffic network where travelers only swap from previous costly routes least ones. NMSD is rational behavior adjustment process with stationary link flow pattern being Wardrop user equilibrium. able prevent two behavioral deficiencies suffered by existing min-cost-oriented models and keep solution invariance. relaxes homogeneous assumption, continuous-time (CNMSD)...

In this paper, a sliding mode control algorithm is developed to synthesize nonlinear system for aircraft systems with actuator faults. Two design parameters are used deal uncertainty caused by faults and in dynamics separately. An adaptive accomodate these uncertainties without knowing exactly the bounds of uncertainties. The stability overall proved using Lyapunov function. efiectiveness algorithms has been verifled on platform FTLAB747.

In this paper, a sliding mode reconflgurable control algorithm is developed to deal with nonlinear aircraft system partial loss or total of actuator faults. Sliding controllers for redundant actuators are combined those regular reconflgure the autonomously information efiectiveness actuators. The has been simulated and validated on longitudinal Boeing 747.

Since the fact that non-signal roundabout allows less flow rate, and with increasing of rates, a series problems have occurred in respect to traffic jams, rising accident growth delays, saturation degrees, etc. Arrangement signal control help enhance capacity at security, but there exist big difference for applicable conditions efficiencies under different methods. The main concern this text, on foundation Left-turn Two-stop Control Method Roundabout consideration number entrance paths basis...

This paper develops and evaluates an orbital emulator (OE) for space situational awareness (SSA). The OE can produce 3D satellite movements using capabilities generated from omni-wheeled robot robotic arm motion methods. of a is partitioned into the in equatorial plane up-down motions vertical plane. actions are emulated by models while performed stepped-motor-controlled-ball along rod (robotic arm), which attached to robot. For multiple satellites, fast map-merging algorithm integrated...

Drag-free satellite can achieve a high flight precision, offering an ideal stage to some scientific experiment. For control of LEO drag-free in accelerator mode, this article builds LQG law, which is based on the linearization orbital motion equation. J <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> perturbation considered linearization, and drift estimated by Kalman filter. LTR introduced improve robustness system. Taking 260km...