A5102800535- Gear and Bearing Dynamics Analysis
- Evaluation Methods in Various Fields
- Civil and Geotechnical Engineering Research
- Remote Sensing and Land Use
- Advanced machining processes and optimization
- Tribology and Lubrication Engineering
- Chemistry and Stereochemistry Studies
- Iterative Learning Control Systems
- ECG Monitoring and Analysis
- Geomechanics and Mining Engineering
- Robotics and Automated Systems
- Structural Health Monitoring Techniques
- Mechanical Engineering and Vibrations Research
- Advanced Computational Techniques and Applications
- Mobile and Web Applications
- Regional Economic and Spatial Analysis
- Seismic Performance and Analysis
- Structural Engineering and Vibration Analysis
- Force Microscopy Techniques and Applications
- Internet of Things and Social Network Interactions
- Indoor and Outdoor Localization Technologies
- Tactile and Sensory Interactions
- Hydraulic and Pneumatic Systems
- Educational Reforms and Innovations
- Hand Gesture Recognition Systems
Hefei University of Technology
2015-2023
Anhui University
2021-2023
National University of Singapore
2023
Nanjing University
2007-2019
MediaTek (China)
2009
In this paper, we propose to use the vibration of chest in response heartbeat as a biometric feature authenticate user on mobile devices. We built-in accelerometer capture signals commercial phones. The only needs press phone his/her chest, and system can identify within few heartbeats. To reliably extract features, design two-step alignment scheme that handle natural variability human heart rates. further an adaptive template selection under different body postures states. Based collected...
In light of ignoring the effect backlash on mesh stiffness in existing gear dynamic theory, a precise profile equation was established based generating processing principle. An improved potential energy method proposed to calculate stiffness. The calculation result showed that when compared with case backlash, had an obvious decrease cycle and rate decline trend decreasing first then increasing, so coefficient introduced observe backlash. Fourier series expansion employed fit rather than...
Gesture tracking is a basic Human-Computer Interaction mechanism to control devices, such as IoT and VR/AR devices. However, prior OFDM signal based systems focus on gesture recognition provide results with insufficient accuracy, thus, cannot be applied for high-precision tracking. In this paper, we propose CSI device-free system, called WiTrace, which leverages the values extracted from signals enable accurate For 1D tracking, WiTrace derives phase of reflected by hand composite signals,...
The development of technology requires higher load capacity, rotating speed, power-weight ratio, lower vibration, and noise with respect to the gear transmission. new type microsegment gear’s tooth profile curve is composed many microsegments. Previous researches indicate that has a good static performance, while dynamic behavior never been investigated. This paper will focus on performance gear. deviation between involute regarded as displacement excitation in proposed model. numerical...
A low-power and high-performance RFCMOS SoC GPS receiver is introduced in this paper. It fabricated a 0.11 mum process with 6.2times6.2mmz TFBGA package. The power consumption 34 mW during tracking stage 45 acquisition stage. sensitivity up to -165 dBm the most competitive TTFF performance. This designed for PND/GSM/CDMA handsets compatible various reference clock frequencies from 12.6 MHz 40 MHz. highly integrated solution intelligent management scheme minimum external components. RF...
To investigate the cavitation of microsegment gear pump and its effect on performance pump, equations for were given, mechanism was described, dynamic model derived. The fluid analysis carried out using computational dynamics software (Fluent), evolution outlet flow characteristics investigated. results show that: vortex occurred at back edge suction chamber teeth top teeth, thus producing cavitation; presented periodic formation-development-disappearance process; led to increased...
Urban road system is the basic bone of urban transportation and one most important factors that influent controls configuration. In this paper, an approach modeling, analyzing optimizing described based on complex network theory GIS technology. The studied three focuses: building network, modeling computational procedures networks Changzhou City as study case. conclusion a scale-free with small-world characteristic, there still space for development whole also key crosses should be kept expedite.
As a common mechanical part, gear is easy to be damaged because of its complex working environment, which can impact the running whole transmission device. Thus, it very important evaluate health gears in time. A fault diagnosis method based on multipoint optimal minimum entropy deconvolution adjusted (MOMEDA) and variational modal extraction (VME) proposed solve problem that periodic features are difficult completely extracted from signals. Meanwhile, sparrow search algorithm (SSA)...
Abstract The study performs a dynamic analysis of microsegment gear system with respect to the time-varying stiffness, backlash, pressure angle, and comprehensive error. period expansion method is proposed construct single-degree-of-freedom nonlinear model spur pair. To improve accuracy simulation results, mesh stiffness angle are expressed in terms piecewise Fourier functions, respectively. effect frequency, damping, input power on bifurcation, chaos properties analyzed. numerical results...
Accessibility is an important indicator of regional land-use, social justice and quality life. It means the convenience from one place to another in a specified kind transportation system. Wide-region based, most present domestic accessibility research took high-grade highway such as railway entirely open road, without considering service that provides based on intersection station. This study extended put forward arithmetic deal with this problem micro-regional area. Taking New District,...
This paper explores a series of methods and models urban land demand forecast, these were dived into the quantitative forecast pattern two types. In this instance, we designed model base system framework, including following steps: data processing, forecasting, type select, way checking multi-schema evaluation, results output. On basis basic flow, object-oriented analysis technique was adopted for developments prediction then with discreteness characteristic produced, which extendable...