A5100352823- Indoor and Outdoor Localization Technologies
- Piezoelectric Actuators and Control
- Advanced Fiber Optic Sensors
- Iterative Learning Control Systems
- Photonic Crystal and Fiber Optics
- Advanced Control Systems Optimization
- Thin-Film Transistor Technologies
- Perovskite Materials and Applications
- Adaptive optics and wavefront sensing
- Ocular and Laser Science Research
- Geotechnical Engineering and Underground Structures
- Organic Electronics and Photovoltaics
- Nanoporous metals and alloys
- Error Correcting Code Techniques
- Silicon Nanostructures and Photoluminescence
- Engineering Applied Research
- Aeroelasticity and Vibration Control
- RFID technology advancements
- High Temperature Alloys and Creep
- Robotics and Sensor-Based Localization
- Robotic Locomotion and Control
- Advanced MEMS and NEMS Technologies
- Smart Parking Systems Research
- Advanced Optical Sensing Technologies
- Electrocatalysts for Energy Conversion
Beihang University
2019-2024
Shandong Jianzhu University
2024
China Railway Group (China)
2024
China Jiliang University
2024
Soochow University
2024
Nanjing University of Science and Technology
2023
Fudan University
2020
Shandong Normal University
2019
Nanjing University of Posts and Telecommunications
2018
Yanshan University
2016-2017
The detection of indoor location based on magnetic fields collected by embedded sensors in smartphones has been progressed rapidly. Most current approaches rely the particle filter (PF) scheme which combines pedestrian dead reckoning (PDR) technique with patterns previously recorded field intensity. key challenges include inherent blindness and degradation problems. Here, a fusion algorithm combining extended Kalman (EKF) PF is proposed to address these issues. EKF first used reduce possible...
An efficient method employing a Principal Component Analysis (PCA)-Deep Belief Network (DBN)-based surrogate model is developed for robust aerodynamic design optimization in this study. In order to reduce the number of variables optimizations, PCA technique implemented geometric parameters obtained by parameterization method. For purpose predicting parameters, DBN established with reduced as input and output, it trained using k-step contrastive divergence algorithm. The PCA-DBN-based...
Based on multiobjective particle swarm optimization, a localization algorithm named optimization (MOPSOLA) is proposed to solve the issues in wireless sensor networks. The functions consist of space distance constraint and geometric topology constraint. optimal solution found by algorithm. Dynamic method adopted maintain archive order limit size archive, global optimum obtained according proportion selection. simulation results show considerable improvements terms accuracy convergence rate...
Three perylene diimide (PDI) tetramers annulated by oxygen (O), sulfur (S), and selenium (Se), named as SF‐4PDI‐O, SF‐4PDI‐S, SF‐4PDI‐Se, are designed, synthesized, paired with polymeric donor PDBT‐T1 to construct organic solar cells. The heteroatoms' effects on photoelectric properties, chemical geometry, charge transport, active‐layer morphology, photovoltaic performance investigated in detail. These PDI acceptors exhibit a similar absorption profile, whereas the highest occupied molecular...
Single crystal Ni-based superalloy, with excellent mechanical properties in high temperature, always works under complex stress states, including multiaxial tension and compression, which results various strengthening mechanisms. In this paper, the atomistic simulation is applied to investigate microstructure evolution loading conditions, uniaxial, equibiaxial, non-equibiaxial tensile–compressive loadings. By comparison of strain–stress curves analysis dislocation motion, it believed that...
Abstract For autistic children with slow language function, it is a classic and easy way to understand the development of their cognitive ability through simple painting experiments. Due lack professional evaluators for assessment children, this article research implement an intelligent system child autism recognition portrait sketch components. A database constructed sample size 30,400 after data expansion. The consists two formats: stroke vector sequence 2D image. Then we propose joint...
Abstract. This paper proposes a 4–5R rolling mechanism based on the spatial extension design of planar 6R single-loop chain. By analyzing locomotion equivalent form, modular gait theory integrating different modes with high efficiency, low energy consumption, and speed is established. A unified kinematic strategy expression, encapsulated in form period table, tailored for chain's flat terrain. contrast conducted to ascertain its velocity parameters volatility center mass (CM). optimizing...
Continuous Phase Frequency Shift Keying (CPFSK) is a phase-continuous constant-envelope modulation scheme. In modern communication systems, Turbo codes or LDPC are commonly used as error control to combat the effects of channel noise and fading. process decoding, soft demodulation information required reduce bit rate(BER). This paper proposes output calculation method for CPFSK signals based on Viterbi algorithm. The utilizes difference cumulative correlation values signal characterize...
For the beam scanning stage in space laser communication, an IMLQG controller is proposed to regulate a piezo actuated fast steering mirror (FSM) track spiral trajectory this paper. To achieve high performance, internal state transition model first built describe such time sequence command. Then, linear quadratic regulation (LQR) problem formulated by augmenting FSM with model, which however not solvable practice. end, discounted factor further introduced. Moreover, adaptive Kalman filter...
This work proposes a noise suppression and disturbance rejection control (NSDRC) strategy for piezo-actuated nanopositioning stages to achieve high bandwidth, strong ro-bustness, suppression. In NSDRC, reduction observer (NRDO) is designed based on the identified third-order model. Then, design procedure of tracking controller analyzed in error domain. A full-loop optimization scheme developed improve performance. Finally, effectiveness NSDRC verified by simulation time domain frequency...
This work studies the problem of high-speed trajectory tracking for a piezoelectric actuator (PEA) subject to constraints on both displacement output and control input via resource-limited embedded processor. To ensure performance, an extremely high frequency 10kHz is recommended. In response, we propose model predictive (MPC) algorithm deploy it low-cost STM32F407 ARM microprocessor operating at 168MHz. Specifically, fast coordinate ascent designed online solve constrained quadratic...
Indoor localization using the magnetic fingerprint collected by embedded sensors of smartphone has been under constant improvement with widespread popularity smartphone. Most current systems rely on Particle Filter (PF) or Kalman (KF) to combine Pedestrian Dead Reckoning (PDR) WiFi for improving their accuracy. In this paper, a system PDR and is proposed indoor localization, which based combination Extend (EKF). The includes module matching module. particular, hybrid positioning algorithm...
In this paper, a control method is proposed based on model compensation and neural network to improve the tracking performance of beam steering mechanism (BSM). The dynamic fast-steering mirror (FSM) first established. Then, extended state observer (ESO) can be compensated through known information ability ESO observe interference. Besides, approach adjusts parameters result system identification by diagonal recurrent (DRNN) simplify tuning process. Finally, numerical simulations are...