The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A robust model predictive control approach for a class of uncertain continuous systems with nonlinear disturbance and state-delay is proposed. The designed robust controller guarantees the closed-loop system asymptotically stable and the receding horizon performance index online minimum. Based on receding optimization principle of predictive control, the infinite time domain optimization problem is...
In this paper, double-layered nonlinear model predictive control method based on T-S fuzzy model is proposed. Firstly, the nonlinear system will be described by the T-S fuzzy model. The method takes advantage of fuzzy clustering algorithm to identify premise parameters of the T-S fuzzy model and applies to the weighted recursive least squares method with forgetting factor for identifying consequent...
In order to study the Kinect and Unity3D combined with the deeper application, based on the use of Kinect to identify the body and made a new attempt for the binding of Unity3D. Using Kinect to get the dynamic behavior in the scene of the human body, to achieve control of the Unity object in the scene. Build the virtual scene in Unity3D platform. The test shows that the use of Kinect for human behavior...
This paper presents a radiation harden oscillator for DC-DC converter controllers. In order to mitigate the single event transient, a novel synchronous RS flip-flop is proposed. Redundancy flip-flop blocks are connected in cycle. Therefore, upset node voltage can be corrected by other nodes. Gate size is carefully designed to improve the critical charge. Three modular redundancy is also utilized....
Simulation of graphene-GaAs Schottky junction solar cell with graphene gate is performed by using finite difference method. Poisson and driftdiffusion equations are solved self-consistently to capture carrier dynamics in the solar cell. Our algorithm is verified by comparing with experimental results. The Schottky barrier between graphene and GaAs can be tuned by graphene gate, and hence the open...
Construction of smart city has become a historical trend in the world. The management of underground pipes and the intelligent concrete are the main part of building smart city in China. Compared with the available electronic marker system, SAW-RFID system has shown excellent properties: truly passive, strong penetrating capability, long service-life, sensing and ID integration, and etc. Thus, SAW-RFID...
Surface acoustic wave (SAW) resonant sensors are widely used in hash environment. The sensor is detected when the response signal exceeds a threshold in frequency spectrum. Because of complicated noise and interference in wireless channel, the threshold should be adaptive in order to detect sensors accurately. An adaptive and dynamic constant false alarm rate(CFAR) threshold determination algorithm...
Wireless SAW resonant sensors have been widely used in many applications, especially in harsh environment. The sensor is detected when the echo signal spectrum processed by Fourier transform exceeds a threshold. Because of complicated noise and electromagnetic interference in wireless channel, the threshold should be adaptive to interference in order to detect the sensor accurately. However, few researches...
A discontinuous Galerkin time-domain (DGTD) algorithm is proposed in this paper for transient thermal simulation of system integration. In order to reduce the complexity in the modeling of package structures, the equivalent thermal parameters of TSV interposer and bump layers are extracted properly. Then, by introducing the heat flux as an intermediate variable, the Laplace operator in the heat conduction...
Adverse weather has serious implication for passenger and aircraft safety. This paper presents an improved weather avoidance system using a genetic algorithm-based technique. A cost model has been developed to estimate the impact of flight level changes to passenger and to consider other factors such as delay costs, weather impact costs, missed connection and schedules of other aircraft. The proposed...
We proposed a versatile polarizer independent with the polarization of the incident light by coating the graphene on the silicon waveguide. The proposed polarizer works at two operation states: TE-pass state and TM-pass state, where the variation of mode effective index is different for the two states. Therefore it is able to combine TE-pass and TM-pass polarizer into one single component. The proposed...
Mobile advertisement optimization has been widely studied in recent years. In this work, we focus on the propagation optimization when the content popularity is concerned. Moreover, we further investigate the issue where the number of popular advertisements is limited. These properties make the conventional optimization schemes unapplicable, because the popularity functions need to be re-evaluated...
With the tremendous development of drone systems, several studies have demonstrated the trend and need of leveraging drones to collect data in traditional wireless sensor networks. Unfortunately, it is intrinsically difficult to incorporate drones or drones to wireless sensor network efficiently due to high-density sensor deployment in an extremely large area. Previous solutions mainly focus on scheduling...
This paper presents a novel 2.5-dimensional (2.5-D) wideband frequency selective surface (FSS) which is designed for Fifth Generation (5G) communication applications. The structure design employs the vertical vias in the two-dimensional (2-D) periodic array of gridded square loops (GSL) to make the structure miniaturized and stable. By cascading two layers of such 2.5-D periodic arrays, the proposed...
Given an initial design of an electromagnetic structure, we develop a direct synthesis algorithm to find the performance of the structure in a broad range of design space. This method only requires the field solutions at the initial design point for a small number of right hand sides, thus avoiding system solutions at other design points. Unlike a derivative-based method whose range of validity is...
In this paper, an intelligent energy management strategy is introduced to improve the fuel economy of a parallel plug-in hybrid electric vehicle (PHEV). Based on the dynamic system analysis, a fuzzy controller is designed for the energy management of PHEV. Then the combination of Simulated Annealing and Particle Swarm Optimization (SA-PSO) is applied to achieve the optimal parameters of the fuzzy...
In this paper, an improved interval type-2 fuzzy logic controller based on genetic algorithm is presented to deal with the problem of losing uncertain information in the type reduction process of interval type-2 fuzzy logic controller. The four uncertain boundary values of interval type-2 fuzzy output are obtained by using interval type-2 fuzzy reasoning and the Wu-Mendel uncertainty bound type reduction...
Optimal formation of robots is one of the most important and interesting topics in the fields of robotics, multi-agents, intelligent control and evolutionary computation, etc. The objective of this paper is mainly to discuss the formation problems by solving the Lagrangian method when the number of robots is only equal to 3 and the number of constraints is larger than 1. The considered objective function...
A real-time energy optimization management for electric vehicles with hybrid energy storage system (HESS) is presented in this paper. The HESS is combined with lithium-ion battery and ultra-capacitor. Based on the quadratic optimization strategy, the power relationship of hybrid energy storage system and the battery power loss characteristics is analyzed. A quadratic performance index is established...
A cloud-based video course recording model is proposed in this paper to record and deal with classroom information in the learning management system (LMS). In the developed model, a new foundations key frame description technology (FKD) has been developed. A cloud-based key frame description library (CKDL) has been improved to raise the speed of retrieval. At the same time, a novel approach has been...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.