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A CFD study of the flow through vibrating screens has been conducted with moving body method of PHOENICS. The flow fields around the static and vibrating screens were calculated with laminar and turbulence models respectively, and the pressure-drop coefficients for both states were obtained. It was found that the flow field became very complex and vortex and backflow were produced because of the motion...
Based on the knowledge rule models and the analysis mathematical models, the two-level real-time expert control system (ECS) was established. With the self-learning ability in expert optimal mode, the expert system (ES) was developed to find the calcining zone's optimal temperature value. To optimize the process, the real-time control system (RTCS) was designed to realize the control of the feeding...
For the three-phase pulse-width modulated (PWM) rectifiers, the controller's performance can be influenced by the mathematic model error, parameter variation and external disturbances, etc. This paper presents a robust H∞ control method for the PWM rectifiers to improve the control performance. The outer voltage loop controller and the inner current loop controller are designed separately. Based on...
The fractional Brownian motion has played an increasingly important role in many elds of application. This paper is to study the application of fractional Brownian motion in optimal portfolio of risk assets. The CVaR explicit formula of portfolio for fractional Brownian motion is derived, then the mathematical model of optimal portfolio and the relative Newton numerical method are presented. In particular,...
In order to understand the effects of bone density on the mechanical properties of femoral neck and improve the effects of treatment for femoral neck fractures, this paper presents a novel method of simulating the bone density changes among individuals. In this method we adjusted the experiential equations between the bone density and gray value and then obtained the mathematical model of the change...
Distribution is an important part to connect directly to the consumer in logistics system, optimizing the distribution system, can improve the logistics cost, and make logistics scientific,so optimization of distribution system is particularly important. For the optimization of distribution system,the optimization of vehicle scheduling is a key link. First of all,this article analyzes the vehicle...
More and more fuzzy applications are used in GPS and INS navigation. Integration of Global Positioning System (GPS) and Inertial Navigation System (INS) are very practical method to get high precision navigation. However, GPS/INS data Fusion in navigation has been a research topic for decades. Since GPS and INS are mainly methods in navigation system, techniques of fusing GPS and INS data are in high...
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