In recent years, partial oxidation of methane has attracted attention for its ability to convert cheap C1 source into fuels and high-value-added chemicals. In this study, a coaxial dielectric barrier discharge (DBD) r...
详细信息
This paper addresses the pursuit-evasion game problem for spacecraft using pulse propulsion, uses Particle Swarm Optimization (PSO) and Proximal Policy Optimization (PPO) algorithms as pursuit and evasion strategies f...
详细信息
Biclustering is an effective method for identifying biologically significant gene modules, which aims at extracting gene modules enriched with more information and achieving accurate cancer subtype classification. How...
详细信息
The Hybrid A∗ algorithm is suitable for Ackermann-type mobile robots with nonholonomic constraints. However, in practical path planning, such issues as long search times, inefficient search efficiency, and excessive p...
详细信息
In this paper,we study the output regulation problem for a class of continuous-time linear time-delay systems by employing the discrete-time feedback *** details,the desired controllers are constructed by using the sa...
详细信息
ISBN:
(数字)9789887581536
ISBN:
(纸本)9781665482561
In this paper,we study the output regulation problem for a class of continuous-time linear time-delay systems by employing the discrete-time feedback *** details,the desired controllers are constructed by using the sampling data of the systems,to this end,we apply the emulation design method and the results under the continuous-time feedback ***,by introducing an auxiliary controlled system and the elaborate state estimation,we successfully give some sufficient conditions to solve the output regulation problem for the system with the time-varying and derivative-bounded exogenous signal,and both the discrete-time static state feedback controller and discrete-time dynamic error feedback controller are constructed respectively.
This paper presents the dynamic method for fault diagnosis based on the updating of Interval-valued belief structures (IBSs). The classical Jeffrey's updating rule and the linear updating rule are extended to the ...
详细信息
This paper presents the dynamic method for fault diagnosis based on the updating of Interval-valued belief structures (IBSs). The classical Jeffrey's updating rule and the linear updating rule are extended to the framework of IBSs. Both of them are recursively used to generate global diagnosis evidence with the form of Interval basic belief assignment (IBBA) by updating the previous evidence with the incoming evidence. The diagnosis decision can be made by global diagnosis evidence. In the process of evidence updating, the similarity factors of evidence are used to determine switching between the extended Jeffrey's and linear updating rules, and to calculate the linear combination weights. The diagnosis examples of machine rotor show that the proposed method can provide more reliable and accurate results than the diagnosis methods based on Dempster-Shafer evidence theory.
In this paper,an adaptive neural tracking control scheme for a class of uncertain switched multi-input multi-output(MIMO)pure-feedback nonlinear systems is *** considered MIMO pure-feedback nonlinear system contains i...
详细信息
In this paper,an adaptive neural tracking control scheme for a class of uncertain switched multi-input multi-output(MIMO)pure-feedback nonlinear systems is *** considered MIMO pure-feedback nonlinear system contains input and output constraints,completely unknown nonlinear functions and time-varying external *** unknown nonlinear functions representing system uncertainties are identified via radial basis function neural networks(RBFNNs).Then,the Nussbaum function is utilized to deal with the nonlinearity issue caused by the input *** prevent system outputs from violating prescribed constraints,the barrier Lyapunov functions(BLFs)are ***,a switched disturbance observer is designed to make the time-varying external disturbances *** on the backstepping recursive design technique and the Lyapunov stability theory,the developed control method is verified applicable to ensure the boundedness of all signals in the closed-loop system and make the system output track given reference signals ***,a numerical simulation is given to demonstrate the effectiveness of the proposed control method.
For nonlinear Backlash systems with input constraints that are difficult to model accurately, a model-free adaptive control algorithm (MFAC)based on data-driven technology is proposed. The criterion function of MFAC a...
详细信息
Single-helical or double-helical structures are common in living *** assembly has been found in the artificial nanoparticles,but how they do so remains poorly ***,we exploit atomically precise Au_(6)Cu_(6)bimetallic n...
详细信息
Single-helical or double-helical structures are common in living *** assembly has been found in the artificial nanoparticles,but how they do so remains poorly ***,we exploit atomically precise Au_(6)Cu_(6)bimetallic nanoparticles(or called nanoclusters)as building blocks to construct a single-helical Au_(12)Cu_(12)superstructure in an operative path,thereby providing access to currently elusive mechanistic *** propose that the thermodynamically viable linearto-bent process at a couple of Au_(6)Cu_(6)nanoclusters imparted by the organic ligands seems to be critical for the helical-nanostructured arrangement of Au_(12)Cu_(12).This study could help to offer a new design rule for the exquisitely helical structure assembled from the artificial nanoparticles.
This study presents a random forest (RF)-based machine learning model to predict the liquidation of US credit unions one year in advance. The model demonstrates impressive accuracy on the test set (97.9% accuracy, wit...
详细信息
暂无评论