In this paper, CuO nanoparticles were synthetized <italic>via</italic> a sol–gel method and their corresponding gas sensor was achieved simultaneously.

In this paper, two iterative-learning-based control methods for uninterruptible power system (UPS) inverters, viz., direct iterative learning controller (direct ILC) and hybrid (hybrid ILC), are proposed. both methods, a zero-phase filter that is designed in the frequency domain applied order to provide compensation resonant peak model ensure error convergence. Furthermore, "forgetting factor" introduced algorithms increase robustness of scheme against measurement noise, initialization...

Flight testbeds with multiple unmanned aerial vehicles (UAVs) are especially important to support research on multi-vehicle-related algorithms. The existing platforms usually lack a generic and complete solution allowing for software hardware design. For such purpose, this paper presents the design implementation of comprehensive multi-camera-based testbed 3-D tracking control UAVs. First, consists multi-camera system ground system, which performs image processing, camera calibration,...

With the popularity of micro-processors, digital controllers are widely used in uninterruptible power supply (UPS) inverters. These control systems UPS inverters require a time interval for sampling and computation, which sometimes affects performance In this paper, problem delay inverter is discussed. Then two novel pulsewidth modulation (PWM) methods, two-polarity PWM method asymmetric method, proposed to handle time-delay problem. Both these methods can achieve wide range duty ratio...

High performance UPS inverters have stringent control requirements both under steady-state and transient conditions. Many different techniques been applied to inverters. However, there are few publications reviewing the literature on these classifying same, particularly with regard more recent developments in this area. In paper, problem of a single-phase inverter is presented discussed. Both transfer function state-space models presented. Then review most popular solutions for carried out....

With the advancement of sensor technology, distributed processing and wireless communication, Visual Sensor Networks (VSNs) are widely used. However, VSNs also have flaws such as poor data synchronization, limited node resources, complicated management. Thus, this paper proposes a placement optimization method to save network resources facilitate First, some necessary models established, including model, space coverage reconstruction error dimensionality reduction search is proposed. Next,...

This paper proposes a controller for uninterruptible power supply inverters based on particular type of online-trained neural network, which is called the B-spline network (BSN). Due to its linear nature and local weight updating, BSN more suitable real-time implementation than conventional multilayer feedforward controllers. Based frequency-domain stability analysis, design methodology determining two main parameters are presented. The model found be similar that an iterative learning...

In this paper, a general solution for the theoretical PWM harmonic components is presented. Analytical solutions of all schemes can be easily achieved by using it. The method applicable irrespective pulse ratio between carrier and fundamental, computational requirements are essentially constant absolute value frequency. Moreover, it especially suitable software calculation due to ease implementation. Compared with numerical integration conventional FFT scheme, computation time proposed much...

Abstract Objective. Lutetium–yttrium orthosilicate (LYSO)-based Compton camera (CC) has been proposed for prompt gamma imaging due to its high detection efficiency and position resolution. However, very few LYSO CC prototypes have built used practical evaluation. In this study, we a lightweight dense-pixel silicon photomultiplier-based two-layer prototype future imaging. Approach. We attempt the first-ever effort use double-encoding with thick light guide coding circuit structure 46 ×...

The technological process for the preparation of nickel oxide nanomaterials in this work.

Relative pose estimation is critical for collaborative multi-agent systems. To achieve accurate and low-cost localization in cluttered GPS-denied environments, we propose a novel relative system based on designed active infrared coded target. Specifically, each agent equipped with forward-looking monocular camera unique The target the lighted LED arrangement detected by processed an efficient decoding algorithm. between estimated combining PnP algorithm Kalman filter. Various experiments are...

Accurate and flexible calibration is a prerequisite for visual sensor networks to retrieve metric information from image data. This paper presents the design implementation of an accurate method class intended 3D measurement tracking in large volumes. The proposed employs generic camera model that applicable wide-angle lens cameras as well conventional cameras. It does not require all employed share common field view, only pairwise overlap needed. In process, poses between stereo are first...

The thermo-structural response of solid rocket motor nozzles is widely investigated in the design modern rockets, and many factors related to material properties have been considered. However, little work has done evaluate effects structure gaps on generation flame leaks. In this paper, a numerical simulation was performed by finite element method study typical nozzle with consideration gap. Initial boundary conditions for were defined quasi-1D model, then coupled simulations different gap...

Abstract In visual simultaneous localization and mapping (SLAM) systems, traditional methods often excel due to rigid environmental assumptions, but face challenges in dynamic environments. To address this, learning-based approaches have been introduced, their expensive computing costs hinder real-time performance, especially on embedded mobile platforms. this article, we propose a robust SLAM method towards environments using acceleration of feature extraction object detection (AFO-SLAM)....

This paper presents a digital adaptive controller based on the generalized minimum variance (GMV) control approach for high performance single-phase inverters capable of maintaining very low harmonic distortion in presence unknown loads which could be linear or nonlinear. The gains are determined by minimizing cost function that reduces both tracking error and signals. on-line learning algorithm guarantees robustness proposed controller. principle operation, stability, robustness, special...