In this paper, the attitude tracking control for a spacecraft system based on novel adaptive integral-type terminal sliding mode fault-tolerant strategy is investigated. First, basic scheme designed to ensure performance in presence of actuator fault, external disturbance, and saturation when rotational inertia known. Second, combined with laws, modified proposed compensate fault uncertainty which contains disturbance uncertainty, separately. The compensated more directly accurately....

This paper reports on the system design for integrating various processes needed end-to-end implementation of a smart assistive robotic manipulator. Specifically, progress is reported in empowerment UCF-MANUS with suite sensory, computational, and multimodal interface capabilities so that its autonomy can be made accessible to users wide range disabilities. Laboratory experiments are demonstrate ability prototype successfully efficiently complete object retrieval tasks. Benchmarking impact...

In this paper, we document the progress in design of a motion segmentation and control strategy for smart assistive robot arm that can provide assistance during activities daily living to elderly and/or users with disabilities. Interaction environment is made challenging by kinematic uncertainty robot, imperfect sensor calibration as well fact most are generally required be performed unstructured environments. The exploits visual force feedback from sensors robot's hand basis efficient...

Drivers are typically faced with two competing challenges when following a preceding vehicle: they need to leave sufficient space in front ensure safety, while doing so the probability of cut‐ins by other vehicles increases as car‐following gap (CFG) becomes large. Therefore, strategic CFG that addresses both critical. This study proposes method address problem through an overall objective function and velocity considering safety hazard vehicles. Based on this, seeking translates finding...

Abstract In this paper, the new separation structure (VDWDWC) for of a quaternary system is proposed first time, which has lower energy consumption and higher efficiency than traditional three‐column Kaibel column. Sensitivity analysis response surface optimization (RSM) are applied to structural design parameter VDWDWC. addition, dynamic control VDWDWC also investigated. Specifically, performances temperature‐composition cascade (TC‐CC) with without feed‐forward ratio compared analyzed. The...

This paper proposes a cloud-based mission control framework for fleet of unmanned vehicles. The enables easy remote access to operations regardless operator location. By leveraging technologies the accomplishes scalable monitoring, control, data acquisition and sharing. While front-end is applicable across mobile robotic systems, back-end presented in this provides integration with Robot Operating System (ROS); thus, enabling various marine agents based on same robot framework. proposed...

This paper presents the investigation on distance protection performance with conventional current sensor device (e.g., transformer, CT) and non fibre optic sensor, FOCS). Distortion of output may cause relay under-reaching, over-reaching or delayed operation. Various factors contributing to distortion, e.g., CT saturation FOCS clipping; are presented. While dc off-set component in transient fault currents remanent flux as well total loop resistance secondary circuit saturate at a lower...

As the number of car ownership increases, road traffic flow continues to increase. At same time, pressure at intersections is increasing as well. present, most lights in China are fixed cycle control. This timing control algorithm obviously cannot make timely adjustments according changes flow. In this case, a large transportation resources would be wasted. It very necessary establish dynamic system for Big data intelligent signals. research, video recognition method was used acquire...

The positioning of Autonomous Underwater Vehicle (AUV) plays an important role in AUV docking. However, the shallow water, performance acoustic devices is significantly limited to ambient noise that leads generation outliers which seriously affect docking guidance and control. In this case, appropriate filtering method leverages smooth consecutive state observation efficiently eliminates leaping data. paper, Adaptive Unscented Particle Filter (AUPF) based on (UPF) algorithm framework thought...

Clay minerals are regardedn important factor affecting the results of low salinity water (LSW) flooding. However, most researchers put great attention on microscopic properties, only few them investigated influence clay by sandpack flooding experiments. This paper quantifies effects in LSW with artificial samples. We used three kinds samples (100% quartz sand; 90%/10% sand/kaolinite or montmorillonite) and heavy oil process. Montmorillonite has optimal LSW’s salinity. The best Na+ is between...

In this paper, the full compressible Navier‐Stokes equations with Cattaneo's heat transfer law or revised Maxwell's are considered. We present a loss of initial smoothness smooth solutions within finite time and give an upper bound such time. It is not required that data has compact support contains vacuum in any regions. Moreover, blow‐up result no restriction about specific ratio. The main approach motivated by previous studies constructing differential inequality.

In the framework of moving horizon strategy, a robust estimation problem is formulated as min-max subject to system dynamics and constraints on state disturbance. this paper two algorithms for constrained linear with an uncertain model are presented. First, we present approximate recursive covariance matrix N=1. Then new algorithm worst-case discussed proved bounded unconstrained system. Simulation results show that proposed in effective systems model.

To deal with the three-dimensional trajectory tracking control problem for an underactuated AUV, a non-smooth controller based on adding power integrator approach is designed in this paper. Firstly, error system established kinematic equation and dynamic of AUV. And represented as cascade position errors velocity by designing desired velocities. Then, using system. Finally, it proved that AUV can track finite time constructing suitable Lyapunov functions. Simulation results demonstrate...

In this paper, a new fault tolerant controller based on adding power integrator technique is proposed for spacecraft attitude control system in actuator multiple case. Firstly, the kinematic and dynamic equations of with faults are given by quaternion. Secondly, considering external disturbance uncertainty rotation inertia matrix simultaneously, novel combining adaptive law designed to make trajectories converge small neighborhood equilibrium finite time. Meanwhile, finite-time convergence...

This paper investigates a robust moving horizon estimation method for the constrained system with uncertain model. In framework of strategy, we formulated problem as min-max subject to dynamics and constraints on states disturbances. this an algorithm is developed recursive covariance matrix presented. Moreover, unconstrained system, stability discussed. Simulation results show that proposed in effective linear systems