A5075652117- Underwater Vehicles and Communication Systems
- Target Tracking and Data Fusion in Sensor Networks
- Inertial Sensor and Navigation
- Indoor and Outdoor Localization Technologies
- Underwater Acoustics Research
- Machine Learning and ELM
- Maritime Navigation and Safety
- Face and Expression Recognition
- Robotics and Sensor-Based Localization
- Risk and Safety Analysis
- Structural Health Monitoring Techniques
- Advanced Sensor and Control Systems
- Educational Reforms and Innovations
- Advanced Algorithms and Applications
- Quantum Information and Cryptography
- CCD and CMOS Imaging Sensors
- Advancements in PLL and VCO Technologies
- Simulation and Modeling Applications
- Analog and Mixed-Signal Circuit Design
- MicroRNA in disease regulation
- Gas Sensing Nanomaterials and Sensors
- Advanced Adaptive Filtering Techniques
- Educational Technology and Pedagogy
- Multi-Criteria Decision Making
- Advanced Optical Imaging Technologies
Hohai University
2013-2025
Wenzhou University
2018-2025
University of Jinan
2019-2024
Shandong Academy of Sciences
2024
Qilu University of Technology
2024
Beijing City University
2024
Heilongjiang Earthquake Agency
2024
Heilongjiang Institute of Technology
2024
Harbin Institute of Technology
2024
Southeast University
2015-2023
In general, the strap-down inertial navigation system (SINS)/Doppler velocity log (DVL)-integrated method can provide continuous and accurate information for autonomous underwater vehicles (AUV). This SINS/DVL fusion is loosely integrated method, in which DVL may contain large error or does not work when some beam measurements are inaccurate outages complex environment. To solve these problems, this article, a novel tightly composed of an SINS, DVL, pressure sensor (PS) proposed, used...
Abstract Room temperature volatile organic compounds (VOCs) sensors usually suffer from severe humidity interference and insufficient sensitivity against VOCs, which greatly restricts its practical applications. Herein, the authors simultaneously reduce hydrophilicity while improving VOCs of Ti 3 C 2 T x MXene by introducing hydrocarbon terminations. The termination‐modified (Ti ‐M2) sensor demonstrates fivefold enhancement in ethanol at room temperature, response water vapor has been...
Doppler Velocity Logs (DVL) is an important information source for underwater vehicle navigation because it can provide accurate velocity information. As the main system, SINS/DVL integrated widely used in vehicle. However, DVL scale factor error, and misalignment with inertial measurement unit (IMU) are two sources of integration inaccuracy. A novel calibration method aided GNSS proposed this paper, which designed based on observation position respectively. The combines Quasi-Newton...
In this paper, we describe a position sensorless vector control system for permanent magnet synchronous motor (PMSM) lawnmower in order to solve the problems of inferior dynamic performance and insufficient load resistance process motors. A speed–current double-closed-loop strategy was adopted speed; an extended Kalman filter (EKF) constructed track rotor position. STM32F407 selected as main chip establish hardware experimental platform, evaluated. The results demonstrate that accurately...
Autonomous underwater vehicle (AUV) mostly relies on an integrated navigation system, which consists of a strap-down inertial system (SINS) and Doppler velocity log (DVL). The provides continuous accurate information when compared to stand-alone SINS or DVL. However, the dependence DVL signals acoustic environment may cause any malfunction due marine organisms strong wave-absorbing material. This article introduces novel method utilizing Dempster–Shafer (DS) theory augmented by least squares...
Uncertainty analysis methods are widely used in today's electromagnetic compatibility simulations order to take account of the nonideality and unpredictability reality improve reliability simulation results. The Stochastic Galerkin Method (SGM) Collocation (SCM), both based on generalized polynomial chaos expansion theory, have become two prevailing types uncertainty thanks their high accuracy computational efficiency. This paper, by using feature selective validation method, presents...
In order to solve the problem of strap-down inertial navigation system (SINS)/Doppler velocity log (DVL)/ultrashort baseline (USBL) interference in complex underwater environment, an asynchronous sequential robust filter method is proposed this article. The USBL original information azimuth, slant range and altitude are introduced as measurement information. large amount computation caused by high dimension multisensor fusion solved introducing technology. Meanwhile, a Kalman (KF) algorithm...
In navigation of autonomous underwater vehicles (AUVs), the estimation position is an important issue, especially, when sensors such as gyroscopes contain a lot noise, and velocity information Doppler log (DVL) affected by motion attitude vehicle. this paper, based on improved auto regressive (AR) model, real-time filter utilized for gyroscope signal de-noising. Meanwhile, according to characteristics AUV, influence vehicle DVL measurement error analyzed assist (MAA) method model introduced...
The main challenge of Strap-down Inertial Navigation System (SINS)/Doppler velocity log (DVL) navigation system is the external measurement noise. Although Sage–Husa adaptive Kalman filter (SHAKF) has been introduced in integrated field, precision and stability SHAKF are still tricky problems to be overcome. primary aim this paper improve underwater SINS/DVL system. To attain this, a tightly model established, where beam measurements used without transforming them 3D velocity. proposed...
In view of the poor robustness integrated navigation system based on SINS/DVL in complex environments, an improved robust filter method for with earth frame error model is proposed this paper. On one hand, traditional system, a mechanization strap-down inertial algorithm and are designed. This realizes under by recursively recursing state equation frame, measurement conversion between frame. other Huber M algorithm, proposed. The combines chi-square detection pre-judgment, introduces...
For the strap-down inertial navigation system (SINS)/Doppler velocity log (DVL) integrated system, installation error angle and DVL scale factor are key factors affecting accuracy of system. Aiming at this problem, based on traditional Kalman filter calibration method, article discusses estimation parameters under different models. On one hand, according to observability state variables, an improved model is proposed, corresponding equation measurement given. other 3-D information abandoned,...
Aiming at the problem of measurement-information abnormal-error and nonlinear filtering in UWB navigation positioning, an ultra wideband position algorithm based on a maximum cross-correlation entropy unscented Kalman filter is proposed. The first obtains predictive state estimate covariance matrix through traceless transformation. Then, it reconstructs observation information using regression method criterion, which enhances robustness for heavy-tailed noise. simulation actual test results...
The aim of this study is to investigate the effects palm olein (POL), cocoa butter (CB) and extra virgin olive oil (EVOO) on lipid profile low-density lipoprotein subfractions in a young, healthy Chinese population. After screening, 72 subjects were randomly assigned three groups, an 18-week randomized crossover trial was conducted. first phase 2-week run-in period, followed by phases 4-week experimental periods with washout period between periods. Three groups alternately consumed diet...