A5100378257- Advanced Control Systems Design
- Extremum Seeking Control Systems
- Aerospace and Aviation Technology
- Aerospace Engineering and Control Systems
- Physical Unclonable Functions (PUFs) and Hardware Security
- Transportation Planning and Optimization
- Antenna Design and Analysis
- Adaptive Control of Nonlinear Systems
- Traffic and Road Safety
- Traffic control and management
- Cryptographic Implementations and Security
- Structural Behavior of Reinforced Concrete
- Iterative Learning Control Systems
- Anomaly Detection Techniques and Applications
- Advanced Algorithms and Applications
- Fractional Differential Equations Solutions
- Advanced Aircraft Design and Technologies
- Aerospace Engineering and Energy Systems
- Smart Parking Systems Research
- Complexity and Algorithms in Graphs
- Guidance and Control Systems
- Markov Chains and Monte Carlo Methods
- Grey System Theory Applications
- Energy Load and Power Forecasting
- Urban and Freight Transport Logistics
Shandong University
2023-2024
Siberian Federal University
2024
Chongqing Jiaotong University
2024
HBIS (China)
2023
Southwest Jiaotong University
2023
Northwestern Polytechnical University
2008-2021
Chengdu University of Information Technology
2021
Changchun University of Science and Technology
2013-2015
Jilin University
2013
Wuyi University
2009
A vertical take-off and landing (VTOL) unmanned aerial vehicle (UAV) can meet both VTOL horizontal flight performance, but how to achieve a safe stable transition is research focus of this type aircraft. According the overall configuration characteristics UAV, aerodynamic models lift fan, duct induced wing surface UAV were established. Three modes are studied, including hover, flight. The method longitudinal balance in mode also studied. Finally, taken as an example conduct balancing...
This paper deals with the study of typical first order velocity servo system tuning method based on factional Proportional Integral Derivative (FOPID) controller in allusion to improve closed-loop system's dynamic performance and robustness. The methods are practical simple apply compared integer proportional, integral derivative (IOPID) controller. main contents include design simulation for system. In this paper, both FOPID FOPI designed by proposed can Furthermore, following systematic...
This paper considers the fractional order proportional derivative (FOPD) controller and [proportional derivative] (FO[PD]) for networked position servo systems. The systematic design schemes of system with a time delay are presented. It follows from Bode plot FOPD FO[PD] that given gain crossover frequency phase margin fulfilled. Moreover, w.r.t. is zero, which means closed-loop robust to variations at frequency. However, sometimes we can not get parameters meet our robustness requirement....
The fractional order calculus theory and its modeling methods have been applied widely in control field.And design of systems become hot point recent years.This paper establishes which parameters are obtained by Bode's ideal transfer function method to get the desired frequency response.Apply this a new structure pseudo-derivative feedback (FOPDF) is suggested.Control designed for integral first system system, apply real high power semiconductor laser diodes constant temperature controlling...
The longitudinal flight stability of the ducted vertical take-off and landing fixed-wing UAV during state hovering transition is studied. Firstly, based on Blade-Element Momentum Theory (BEMT) experimental data, a coaxial dual-rotor aerodynamic model thrust characteristic cross-section calculations are established. parameters identified according to data. Secondly, dynamics with duct deflection established six-degree-of-freedom equations. Finally, case was used solve balance analysis method,...
An accurate description of the transition corridor is great significance for flight process vertical take-off and landing (VTOL) fixed-wing unmanned aerial vehicle (UAV). To study UAVs, dynamic model this type UAV are established in current article. The method establishing based on a reasonable match power aerodynamic force UAV. From perspective dynamics, ducted lift-increasing system’s deflection angle–speed envelope studied with maximum lift coefficient wing available power. influence...
This article studies the sales forecasting problem in field of e-commerce. Based on CRISP-DM methodology, innovative data mining technology is used to construct a variety models, and compared optimized. improves quality quantity forecasts provides enterprises with more accurate effective decision support. In terms modeling optimization this article, models such as random forest, support vector machine, neural network are for comprehensive prediction, comparative analysis conducted classic...
Abstract In this letter, a novel secret merchant‐4 (SM4) cryptographic circuit implementation is proposed against higher order power analysis attacks (PAAs). Four different random number generators (RNGs) are embedded into the SM4 architecture for breaking correlation between processed data and monitored dissipation PAAs. Firstly, fake keys created by first RNG to scramble critical information related with actual key. Furthermore, second controls implementations of substitution boxes...
Aiming at the problem of energy collection and consumption solar-powered UAV under different maneuvers, an model combining attitude solar radiation was established. Firstly, ASHRAE used as estimation in flight environment. Secondly, harvesting is deduced by relationship between UAV, relative position sun earth. The experimental data to establish states. Finally, time same mission path operating modes obtained through simulation. Simulation results show that when hovering a height 3 000...
With the increasing magnitude of data, accuracy single data cannot be guaranteed. In order to improve model prediction and further for subsequent processing, this paper focuses on detection outliers. This introduces density clustering outlier methods Isolation Forest in recognition, mainly describes principle process recognition using Forest. Based this, according features an improved algorithm combining is proposed. Finally, through existing common set, statistical method, machine learning...
Business-to-consumer (b2c) pattern linked to e-business has been becoming more and popular in several decades. E-business for personal tourism consumer interested it is so easy control, which b2c have studied. B2c e-business, however, may very important implications other problems. This paper applies a comprehensive approach using Chinese sample of 200 enterprises with e-business. The results showed that China only marginally decreased as result By the research, also reduction consumption...
Guidance system can improve the resources utilization of LBS (Location Based Service) effectively, and validity guidance depends on accurate predicting near-future occupancy its trend. Considering strong randomicity short-term characteristic trend, a multi-model fusion method integrating adaptive filter ARMA (Auto Regressive Moving Average) model is proposed to predict trend accurately. With method, observation series recent decomposed different scales reconstructed by wavelet transform...
A compact and planar dual band antenna for wireless com- munication is presented. The impedance bandwidth of the proposed an- tenna can cover Bluetooth (2.4{2.484GHz) ultrawideband (UWB: 3.1{10.6GHz) bands. It composed a semi-bevelled-rectangle patch bended L-shaped strip fed by microstrip line. built on FR4 substrate with only 21mm £ 35mm surface area included ground plane. Details design measured results voltage standing wave ratio, radiation patters, peak gain, etc., are presented discussed.
We present polynomial-time algorithms for approximate counting and sampling solutions to constraint satisfaction problems (CSPs) with atomic constraints within the local lemma regime: $$ pD^{2+o_q(1)}\lesssim 1. When domain size $q$ of each variable becomes sufficiently large, this almost matches known lower bound $pD^2\gtrsim 1$ CSPs [Bez\'akov\'a et al, SICOMP '19; Galanis, Guo, Wang, TOCT '22], thus establishing an tight Lov\'{a}sz large sizes.