A5114860644- Guidance and Control Systems
- Advanced Battery Technologies Research
- Spacecraft Dynamics and Control
- Infrastructure Resilience and Vulnerability Analysis
- Fault Detection and Control Systems
- Advanced Measurement and Detection Methods
- Disaster Management and Resilience
- Machine Fault Diagnosis Techniques
- Advanced Research in Science and Engineering
- Robotic Mechanisms and Dynamics
- Aerospace Engineering and Control Systems
- Reliability and Maintenance Optimization
- Image and Video Stabilization
- Advanced Text Analysis Techniques
- Age of Information Optimization
- Flood Risk Assessment and Management
- Metaheuristic Optimization Algorithms Research
- Space Satellite Systems and Control
- Music and Audio Processing
- Construction Project Management and Performance
- Dynamics and Control of Mechanical Systems
- Time Series Analysis and Forecasting
- Optimal Experimental Design Methods
- Inertial Sensor and Navigation
- Alkaloids: synthesis and pharmacology
Beihang University
2015-2023
Tsinghua University
2018
Yantai University
2013
Abstract Remaining useful life (RUL) prediction is the main approach to guarantee reliability of lithium-ion batteries. This paper proposes an interpretable hybrid method predict RUL distribution with changeable form. The integrates prior knowledge from statistical model and regular patterns learned monitoring data based on data-driven model. predicted compound provides more information compared point estimation fixed general framework contains a component learner, fusion stacking strategy,...
A numerical multi-constrained predictor-corrector guidance algorithm is proposed in this study, focusing on real-time longitudinal trajectory generation, constraint management, and lateral improvement. First, a new compound bank corridor designed to help convert the complicated planning problem into root-finding problem, which identified by recursive least squares estimation solved newly period-crossing steepest descent method within fraction of second Matlab. Second, three enforcement...
3-(Hydroxymethyl)-6,7-dihydroindolo[2,3-a]quinolizin-(12H)-one is a bioactive indole alkaloid isolated from <i>Nauclea officinalis</i>, plant species which used as traditional Chinese medicine. We investigated the anti-inflammatory properties of 3-(hydroxymethyl)-6,7-dihydroindolo[2,3-a]quinolizin-(12H)-one in RAW 264.7 murine macrophages. The results indicated that it inhibited overproduction NO and release TNF-<i>α</i>. Furthermore, this compound expression iNOS COX-2 proteins, enzymatic...
Extant literature lacks a systematic framework addressing the mechanisms of alliance functional process and its impacts on management activities together with performance in delivering Engineering–procurement–construction (EPC) projects. This study quantitatively investigates cause–effect relationships among these themes by building validating conceptual model contractor–designer international hydropower EPC With support data collected from an industry survey, results reveal key design...
The aero-engine is the heart of an aircraft; its performance deteriorates rapidly due to high temperature and high-pressure environment during flights. It necessary predict remaining useful life (RUL) improve reliability aero-engines provide security for reliable In previous flights, sensors collected a lot parameter data formed database regarding degradation process. These parameters cannot reflect process directly. this paper, fuzzy clustering applied divide stages aero-engine, construct...
In an effort to understand the social-physical vulnerabilities from 2008 Wenchuan earthquake, this research established and validated a conceptual model for natural disaster analysis. The earthquake severely impacted built environment, with many buildings being destroyed in secondary impacts. This vulnerable environment exacerbated poverty local residents because of lack flat land inaccessibility mountainous areas. Therefore, there was interactive relationship between vulnerability social...
This paper focuses on the hypersonic vehicle in consideration of oscillation and aerodynamic heating problems during reentry process, for trajectory optimization, penalty function method ε level comparison are introduced transforming unconstrained waterweeds algorithm into constrained to solve multi-objective optimization problems, which a novel more precise criterion based time-scales separation guidance is put forward indicating get better optimal result. The transformed successfully...
In this paper, we address the LMI-based boundary control issue of a flexible manipulator subject to external disturbance. First, dynamics system is characterised by several partial differential equations (PDEs). Second, in order realise disturbance rejection, propose two observers. Based on these observers, protocols are designed via linear matrix inequality (LMI) method for suppressing elastic vibration and regulating angle joint. A significant feature LMI that gains can be efficiently...
An inertial platform is the key component of a remote sensing system. During service, performance appears in degradation and accuracy reduction. For better maintenance, system checked maintained regularly. The change an can be evaluated by detection data. Due to limitations conditions, data belongs small sample In this paper, order predict platform, prediction model for designed combining sliding window, grey theory neural network (SGMNN). experiments results show that SGMNN performs best...
As the core component of inertial navigation system, platform has been widely used in military and civilian equipment such as aviation aerospace. The factory test accuracy is affected by assembly process. To analyze relationship between process accuracy, Pearson correlation analysis, Spearman analysis grey are applied to them. By analyzing key links can be found. Finally, prediction realized establishing neural network model.
By the analysis of imaging principle and raw echo model synthetic aperture radar (SAR) (Bamler et al., 1992), an efficient simulation method is proposed based on inverse algorithm for SAR data (Franceschetti 1995). The idea chirp scaling (CS) called (ICS) (Xiao Pi, 2003). It converts scene greyscale into confocal complex image comprising continuous phase information, using a processing (Li 1996). Then, backward used. can simulate after azimuth decompression, range decompression curvature...
Missile spins can reduce the disturbance caused by asymmetric body, eccentric of mass and other problem, also lead to attitude control missile being more complicated. Dynamic model a spin is established in quasi-body coordinates. The system divided into inner outer subsystems through time-scale separation principle. And controllers loop are both designed active rejection controller (ADRC). main idea ADRC putting uncertainty model, parameters perturbation unmodelled dynamic as total...
For the problem of reentry guidance with online no-fly zone constraints, this paper combines improved A* algorithm DDPG and proposes a trajectory planning high real-time property. Firstly, constructs 2D environment grid map information. Secondly, waypoint decision by conducting on above map. The aircraft is thus simplified to subtasks between waypoints. Finally, an generation algorithm. first MDP model based requirements subtasks; builds agent training process. Through offline simulation,...
Health status assessment is a key procedure for fault prediction and health management complex systems. To accurately evaluate the of systems, this paper proposes method based on directed acyclic graph an improved Mahalanobis- Taguchi system. Firstly, Mahalanobis distance between samples different statuses calculated by using system, discrimination degree each sample combination analyzed compared. Then, multi-classification process equipment constructed graph. Next, feature combinations are...