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Aiming at the task of autonomous search and target capture for the intelligent vehicle, in this paper, the intelligent vehicle with a four-degree-of-freedom manipulator was taken as the research object. Firstly, the D-H (Denavit-Hartenberg Matrix) method is utilized to construct a model of the manipulator by MATLAB, and a method is given to calculate the analytical solution of the angle of manipulator...
Distributed energy generation systems with energy storage and microgrids have attracted increasing research interest in recent years. Therefore, multi-ports dc-dc converters have gained more interest. However, when integrating into multiple port converters, the power flow control and ports regulation increase in complexity. In this paper, an isolated multi-port bidirectional converter based on an...
Cooperative receiving has been recognized as an effective technique to mitigate inter-cell interference (ICI) for the uplink of multicell wireless systems. However, how to cluster the cooperative cells effectively is critical to the subsequent multicell signal processing and the corresponding performance improvement. A dynamic user-centric clustering scheme based on the interference channel strength...
Buildings are important places and parts in the society. The conventional power supply of a building is AC power from the utility grid. As the growing penetration of renewable energy source and DC loads, it becomes practical and common for a building supplied by the distributed generators with DC power. Considering this unprecedented transition from the conventional AC building to the hybrid AC/DC...
In order to realize maximum power output of photovoltaics (PV), reduce line losses, and decrease abandoned solar energy during weak irradiance, a new medium voltage grid-connected PV system structure based on cascaded converters was proposed in this paper. A transformerless cascade step-up structure, instead of applying line-frequency step-up transformer, is proposed to connect PV directly to the...
In this paper, we propose an algebraic approach to design extremely low rate low-density parity-check (LDPC) codes by employing the primitive polynomials. We first investigate the requirements for the polynomials to construct 4-cycle free LDPC codes and then propose an algebraic approach to design the parity check matrix. To achieve a better decoding performance in the extremely low rate region, we...
The design of an embodied conversational agent that promotes physical activity to young Chinese adults living in the United States is described, along with specific cultural adaptations performed to tailor the agent to Chinese culture. Results of a pilot study comparing the Chinese exercise coach agent to another adapted to American culture demonstrated that participants found the Chinese agent more...
According to the traditional control of three-phase inverter, basing on the transient mathematical model of second order of virtual synchronous generator, the three loops control of power-voltage-current with virtual synchronous generator (VSG) by using the feedback of capacitance's voltage and current was built. And the proportional and integral control was applied in the loop of voltage to ensure...
The electronic properties of single/bi-layer SnSe are theoretically studied using first-principles approach based on density-functional theory (DFT). The band structure and lattice parameters are researched. In order to gain more desirable electronic property, the in-plane strain and external electric field are adopted to modulate their electronic properties. The simulation results demonstrate that...
We demonstrate a novel polyvinyl chloride (PVC) diaphragm-based fiber-tip Fabry-Perot interferometer for gas pressure measurements with ultra-high sensitivity. The PVC diaphragm has been coated to the end facet of a well-cut standard single-mode fiber by use of a plastic welder. Ultrahigh pressure sensitivity of ∼66.07 nm/MPa at 1565 nm and a low temperature cross-sensitivity of —5.5 KPa/°C have been...
Fixed wing canard aerodynamic forces during flight control process was used as an energy source for internal control mechanisms, based on this kind of situation, control system was power up in flight control process, so we needed to initialize roll attitude angle of the fixed wing canard in flight. In this paper, a new algorithm based on aerodynamic synthesis vector analysis for the roll attitude...
A review of high voltage gain, high efficiency bidirectional dc-dc topologies is presented. Each converters primary benefit is highlighted, and a summary of all the converters is presented. It is observed that voltage gains higher than 20 is only achieved with topologies using a transformer. The average efficiency of the topologies is slightly lower for isolated topologies. Different strategies are...
Information centric networking (ICN) is one of the emerging Internet paradigms proposed to overcome the shortcoming of the current host-centric Internet. With ubiquitous in-network caching, ICN can facilitate content delivery and reduce network delay. In this paper, we propose a novel collaborative caching scheme based on routers' position to cache popular videos on the edge routers which are closer...
This paper investigates the problem of Synchronous Control of Fractional gene regulatory networks. Based on the Lyapunov stability judgment method, we apply two kinds of control method, adaptive projection control and adaptive sliding mode control, for making system synchronous. Finally, a numerical simulation example is provided to verify the effectiveness and the benefit of the proposed synchronicity...
Dempster-Shafer evidence theory (DST) is a theoretical framework for uncertainty modeling and reasoning. The determination of basic belief assignment (BBA) is crucial in DST, however, there is no general theoretical method for BBA determination. In this paper, a method of generating BBA using fuzzy numbers is proposed. First, the training data are modeled as fuzzy numbers. Then, the dissimilarities...
In this paper, user-centric clustering for uplink coordinated multi-point (CoMP) processing in a multi-cell environment is investigated such that the inter-cell interference (ICI) within cluster can be effectively eliminated. Although full cooperation among all cells in the network can achieve the highest cooperative gain in terms of ICI cancellation, such scheme consumes too much cooperation resources...
A bipolar dc microgrid features three voltage levels and is capable of transmitting power more efficiently than a unipolar system. This paper proposes a droop control to achieve load sharing and voltage balancing in such a microgrid system. Droop control is adopted to ensure that autonomous sharing of load power can be realized without communication. Moreover, the positive and negative pole voltages...
This paper presents two configurations of dual-input (DI) or three-port (TPC) isolated dc-dc converters for hybrid renewable energy systems such as photovoltaics and batteries. These two converters are derived by integrating an interleaved boost converter and a single-active bridge converter with an ac inductor as a power interfacing element or phase-shift soft-switching converter with an output dc...
The impact of position sensing dynamics, including time-delays caused by magnetics, electrical transmission of sensed signals and A/D conversion, on feedforward current control of permanent magnet synchronous machine (PMSM) drive systems are presented in this paper. Further, the effect of misalignment of the position sensor zero with the machine back-EMF is also presented. The different error sources...
Recently, researchers show great interest in Unmanned Aerial Vehicle(UAV) path planning problem due to development of artificial intelligence algorithms. However, the convergence of these kinds of heuristic methods can not be proved. Therefore, the UAV path planning problem has been modeled as a linear optimal control problem to ensure the convergence. But the computing time will increase exponentially...
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