With the enlargement of power grid scale, connections between different power subsystems in interconnected network have been more-closely related and the analysis of power system dynamic behaviors becomes more complex. This paper selects 3 area indexes which comprehensively reflect frequency change through...

With the development of smart technology and the improvement of living standard, the demand for a life with smart home appliance is increasing. The advancement of wireless power transfer technology has provided an opportunity to charge home appliance wirelessly. The combination of smart home appliance...

In order to realize intelligent charging of electric equipment in the circumstances of Smart Grid, such as sweeping robots, inspection robots and automatic guided vehicles, this paper designs a new intelligent charging access system using intelligent outlet technology and wireless charging technology....

As household appliances become more and more intelligent, increasingly strict demands are put forward for their power supply. Existing draw-out power supply mode of household appliances has many shortcomings including low waterproof grade, touch spark, and wire constraint. Considering this, a tail-free...

Aiming at the development of ship information and intellectualization, this paper researched the control law design problems of the network control system under total ship computing environment (TSCE). Firstly, we analyzed and constructed the computing environment network architecture for the development...

Straightness, verticality and step height deviation are the main parameters to evaluate the safe and stable operation of the elevator. One kind of automated detecting system is devised to detect these multiple parameters of elevator guide rails at the same time exactly and efficiently. The detecting...

Base on Poynting Vector to determine the field strength sensitive boundary between the intentional transmitter antenna and the equipment or apparatus installed on railway train. A detail calculation is made to analyse radiation field strength. This paper focuses on how to determine the far field of the...

To improve the efficiency of stomatology practitioners, this paper proposed a novel teeth type classification method. Our method was based on three successful components: Haar wavelet transform, principal component analysis, and support vector machine. We create a 120-image dataset, with 30 images for...

Ultrasonic Doppler technique is widely used for velocity estimation in medical electronic systems. This technique is signal-processing intensive with an increasing requirement on accuracy, real time and stability. The clutter caused by human tissues contains little information about blood flow velocity....

The vibration of stator is an important part of the linear ultrasonic motor operating mechanism. Linear ultrasonic motor is driven by the interface force between stator and slider. Changes in vibration mode are not considered in the traditional motor vibration model which fails to reflect the vibration...

A new electric mechanical metal belt (chain) continuously variable transmission (EMCVT) for vehicles was studied in this paper. With the use of direct-current (DC) motor controlling the rolling screw, the displacement of the taper disc pressed by the Belleville spring can be controlled, which achieves...

For considering the losses of prestress in suspen-dome structure after pre-stress optimization using rigid cable method, an improved rigid cable method was proposed. The temperature stress is applied to corresponding element to compensate the loss of prestress, and the relationship between temperature...

The multi-beam echo sounding system was the most effective instrument to detect the seabed topography. In order to reduce the seafloor terrain distortion caused by the representative error of sound velocity profile (SVP), the indirection adjustment inversion method was introduced after analyzing the...

Hydro-pneumatic transform (short for HP transformer) wastes a lot of compressed air when working, and its power efficiency is low. To improve its efficiency, we carry on the parameter optimization which influences the power efficiency of HP transformer system. Firstly, we build up a mathematical model...

In order to improve the vehicle performance, the mathematical model and experimental research of damping controlled oil gas spring were carried out in this paper, a proportional throttle valve was installed on the basis of the original damping valve system. The proportional valve adopted slide valve...

This project is to design and manufacture a novel shock absorber with energy harvesting to reclaim vibration energy from automotive suspension system during driving. In order to improve safety and comfort, shock absorbers are used in automotive to remove vibration energy during driving, who adopt hydraulic...

When the disks of the rod fastening rotor were contacted with each other, the contact thermal resistance between the contact surfaces would play a critical role in heat transfer and the distribution of temperature field. On the basis of the surface fractal characteristics, combining Mandelbrot - Tian...

With the advantages of convenient processing, easy control for geometry size and adjustable parameters, single head spiral groove nozzle is widely applied in the field of environmental protection equipment. According to the lackage of rules on structure parameters of spiral groove to spray performance...

With the rapid development of automobile industry and economy, the randomness of traffic flow characteristics such as vehicle speed and vehicle weight acting on the bridge is more and more obvious. However, the previous studies are based on determination of traffic flow, so fatigue, deflection and other...

In order to shorten the test period of spaceflight articles at the launch site and improve facility utilization and launch rate, the paper proposes our research about test process model and optimization framework. The approach overlays test activity on activity-on-arrow for network schedule. The test...